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2024 Grape and Wine Outlook: Complex and Varied

Vineyard mechanization and technology aim for long-term success for growers (photo courtesy Sonoma County Winegrowers.)

Karissa Kruse could easily adopt a bearish outlook for the grape and wine sector this year.
As president and CEO of Sonoma County Winegrowers, she’s well aware of the industry’s challenges, from inflated input costs and worrisome labor challenges to slowing wine demand and increasing competition from ready-to-drink alcoholic beverages.

This Sonoma County vineyard will produce high-quality grapes for world-class wines (photo courtesy Sonoma County Winegrowers.)

Yet Kruse chooses to see the glass as half full.

“We’re coming into 2024 with one of the best vintages in the history of Sonoma County,” she said. “The wineries are very excited, and the farmers are happy.”

Moreover, Kruse believes her association’s “Farm of the Future” efforts in sustainability and regenerative farming bode well for Sonoma County’s 1,800 winegrape growers and 60,000 acres of vineyards. And the organization’s new demand-building collaborations with the Houston Rockets basketball team and Landry’s, a major dining and hospitality company, also give Kruse reason to feel optimistic.

“Technology, innovation, mechanization and partnerships are all going to be drivers for long-term viability for our farmers here and everywhere,” she said.

Kruse is not alone in her positive outlook. Other California wine and grape industry leaders are similarly upbeat about the future, although the overall forecast, like wine itself, is complex and varied.

Karissa Kruse of Sonoma County Winegrowers says new initiatives and partnerships will boost viability “for farmers here and everywhere” (photo courtesy Sonoma County Winegrowers.)

“We are optimistic about 2024,” echoed Joel Peterson, executive director of the Paso Robles Wine Country Alliance, which counts 500 members, including wineries, winegrape growers and associated businesses.

“At a macro level, there are certainly some cloudy skies ahead,” he acknowledged. “You hear that people are drinking less. But we’ve got a lot of innovation here with wineries and producers.”

For example, Peterson said, Paso Robles producers are making progress in regenerative agriculture and reducing their carbon footprint. Some area wineries are moving beyond traditional glass bottles by putting more wines in alternative packaging, such as boxes or reusable vessels. Further, a new, more youthful vibe is emerging in the region with the recent development of Tin City, a collection of tin buildings south of Paso Robles. The hub of 40 tasting rooms, breweries, wineries, distilleries and restaurants has become a popular attraction.

Tapping into underdeveloped audiences holds “huge opportunity” for wine, says O’Neill’s Blaire Fraser (photo courtesy O’Neill Vintners and Distillers.)

“The other thing that’s exciting is just the growth of our reputation and presence on a national level,” Peterson said. “If you go to any restaurant in America, you’re pretty much going to find a Paso Robles Cabernet by the glass.”

The October 2023 purchase of Daou Vineyards by Treasury Wine Estates for $1 billion, he added, reflects the growing prominence of the Paso Robles wine-producing region.

“That was a big deal for Paso Robles, a fortification of our reputation,” said Peterson. “There are exciting things happening here.”

“Exciting things are happening here,” says Joel Peterson of Paso Robles Wine Country Alliance (photo courtesy PRWCA.)

Opportunities Beckon
Blaire Fraser, vice president of marketing for California-based O’Neill Vintners and Distillers, believes evolving consumer demands offer opportunity to expand sales for growers and wineries. A Certified B Corporation, O’Neill is a major player in the industry, annually producing nearly 7 million cases of wine for multiple brands.

Broad interest in sustainability is driving growth in organic wines, said Fraser. What’s more, consumers are expanding their taste horizons.

In Sonoma County, 99% of vineyard acres are certified sustainable (photo courtesy Sonoma County Winegrowers.)

“We’re seeing uptake in the light, bright whites such as Sauvignon Blanc,” she added. “In fact, O’Neill is launching a new Line 39 Organic Sauvignon Blanc in 2024.”

Fraser also sees growth potential in the tried-and-true super premium Chardonnay category. “It’s one of the largest and fastest-growing segments of wine,” she said.

Tapping into underdeveloped audiences is another beckoning opportunity. “In California, 40% of consumers are Hispanic,” Fraser said. “There aren’t a lot of brands that have tapped into that audience. That’s another huge opportunity for wine.”

An excellent vintage from last fall’s harvest has boosted spirits for many growers and vintners (photo by C. Merlo.)

Also voicing optimism is Tyler Thomas, president and winemaker at two Santa Barbara County vineyard-winery operations, Dierberg and Star Lane.

“There are a lot of great wines being made,” Thomas said. “There are still tons of people really interested in wine. And despite news about plateauing wine consumption, I don’t think it’s a slam dunk or that we should be panicking and abandoning the wine industry.”

Not Ignoring Challenges
At the same time, no one expects an easy year ahead. Vineyard pest and plant problems, including grapevine red blotch and Pierce’s Disease, persist. Labor availability and costs rank high among grower concerns. In many winegrowing areas, limited water availability remains an issue. Water shortages, for instance, have resulted in a moratorium on new plantings just east of Paso Robles.

The rising national reputation of Paso Robles wines, like this Austin Hope cabernet sauvignon, helps underpin the region’s confident outlook (photo by C. Merlo.)

“The general outlook from the grower, and even the winery side, is that 2024 is going to be a challenging year,” said Stuart Spencer, executive director of the Lodi Winegrape Commission. The organization represents 750 winegrowers in a region that accounts for some 20% of California’s winegrape production.

Supply and demand are out of balance, creating “a very competitive marketplace,” Spencer said. Lodi winegrape growers, for example, haven’t seen significant price growth over the last 20 to 30 years. The average per-ton price paid to the area’s growers is $600 to $650. Compare that to Napa’s growers, who produce far fewer grapes but can command $7,000 per ton.

“Napa has carved out a strong identity,” Spencer said. “But the large winegrape buyers don’t support the Lodi region in that way. They’re not branding Lodi or investing in it from a marketing perspective. They’ll purchase our grapes at a very low price. So, to maintain profitability, growers have responded by increasing production.”

Stuart Spencer of the Lodi Winegrape Commission foresees another challenging year (photo courtesy Lodi Winegrape Commission.)

A “COVID hangover” continues to be felt, not just domestically but globally, Spencer added. Another globally tied problem stems from the fact that some of California’s largest grape buyers are also the largest importers of bulk wine.

“If they can source a certain variety from another part of the world at a lower price, they’re going to do that,” said Spencer. “That’s keeping pressure on the industry here.”

Some see consolidation among wineries and distributors as another hurdle. While such unions can bring greater efficiencies and resources to smaller businesses, “it’s harder to get your brand recognized if you’re a small guy trying… to stand out against the big guys,” said Peterson.

A ‘Sputtering’ Market
Jeff Bitter, president of Allied Grape Growers, expects market and grower pricing pressures to continue in 2024. His outlook is shaped by his daily responsibility of selling winegrapes for the cooperative’s 500 grower-members.

Bitter sees a market burdened by the slowdown in demand that began around 2016. Consumption has lagged with the shrinking number of baby boomers, who helped propel wine sales in recent decades. Younger generations haven’t adopted wine in the same way. On top of that, a growing anti-alcohol movement has emerged. The pullback in demand has caused the grape and wine industry to lose shipments and sales volume.

“There’s a lot of opportunity out there,” says Tyler Thomas of Dierberg and Star Lane wineries in Santa Barbara County (photo courtesy Star Lane Vineyard and Winery,)

“For the last 18 months, the wine market has been sputtering,” Bitter said.

The wine market, he said, is operating in reactive mode. Retailers aren’t seeing wine move off their shelves as quickly as before partly as consumers worry about rising grocery costs. Even wines below $15 to $18 a bottle have struggled to maintain shipments. That’s led to a slowdown in purchases from distributors. They don’t want to carry excess inventory in their warehouses since higher interest rates add to their storage costs. So, distributors have adopted more just-in-time, or only-when-needed, shipments. In turn, that backs up to the wineries, where tanks stay full. And that diminishes the market for winegrape growers.
“In 2023, we saw the grape market kind of fail, particularly on red grapes,” said Bitter. “Anything that was available for sale was challenging to move at a decent price, particularly in the spot market.” In the Lodi area, he added, “tens of thousands of tons” of red grapes never found a buyer and remained on the vine after harvest.

Allied Grape Growers’ Jeff Bitter has been calling for the industry to remove 50,000 acres of winegrape vineyards (photo courtesy AGG.)

As a result of the market imbalance, Bitter has been calling for an “acreage adjustment” of 50,000 net acres in vineyard removals. That would amount to about 10% of California’s 570,000 bearing acres of winegrapes.

“That’s the only way to match what we’re producing with what the market’s going to take off our hands,” he said.

Bitter recognizes achieving those acreage reductions won’t be easy. “Developing vineyards is a capital-intensive business,” he said. “Those who have developed vineyards are slow to remove them, particularly healthy, productive vineyards. There’s that mentality that if everybody else pulls out their vineyards, I’ll be the guy who still has my vineyard when the market turns around.”

Further, there aren’t always good alternatives or profitable crops to replace vineyards. A grower’s options depend on the region and the ground farmed. “If you’re going to pull out a vineyard in Napa, what are you going to plant instead?” Bitter asks.

That’s a dilemma Monterey County understands. Over the last five years, growers there have removed nearly 3,000 acres of the county’s total 40,000 acres of vineyards because “of a lack of clarity about what the market’s going to want,” said Kim Stemler, executive director of Monterey County Vintners and Growers Association. The majority of those pulled vineyards were chardonnay and pinot, the county’s top two varietals. While some of the ground was replaced with lemon trees, the question remains.

“What gets planted?” Stemler asked. “That’s the big weight.”

Grape growers will continue to wrestle with high input costs and labor challenges (photo by C. Merlo.)

“Survive to ’25”
Spencer said Lodi-area growers are hoping just to make it through the year as they wait for the market to rebalance. “One of our growers jokingly said his motto is ‘Survive to ’25,’ and there’s a lot of truth to that,” he said. “It’s a tough time right now, and there are not a lot of good answers at the moment.”

Still, Spencer believes the Lodi area and other wine regions must be more proactive in bolstering branding efforts, developing a sense of place and story in marketing and rising above the commodity image of their grapes and wine. A closer connection between farms and the consumer would also benefit the industry, he added.

“People are not going to stop drinking wine,” he said. “It’s very much engrained in our community and our society. California and Lodi make incredible wines. We need to take ownership of that as growers and not rely on others to do it.”

Santa Barbara County’s Thomas agreed “brands need to find ways to take market share.” Digital marketing can be particularly useful.

“Even in the wholesale space, you can do direct marketing campaigns to buyers at restaurants or retail shops in Colorado or Florida, and you can do that from your office in California,” he said. “That could potentially help smaller producers maintain a toehold in the wholesale markets.”

All in all, Thomas believes the industry’s headwinds can bring fresh approaches to the grape and wine business. “It’s actually a great opportunity to shuffle the deck and for people to re-think their strategy,” he said. “It’s time to put the pandemic to bed and go forward. And this is the year to do that.”

Indian Peak Vineyard is Couple’s Self-Made Dream-Come-True

The expansive 360-degree views from Indian Peak Vineyard are breathtaking (photo by J.R. Johnson.)

It’s a two-man show at Indian Peak Vineyard in Manton, Calif. Well, to be honest and exact, it’s a one-man and one-woman show in the form of Fred and Donna Boots, who own and operate the boutique grape growing and winemaking operation at the foothills of the beautiful northern Sierra Nevada Cascades, home to the Lassen Volcanic National Forest.
Looking east from the Boots’ property, visitors see the majestic Lassen Peak, then turn around and enjoy a view that encompasses the breadth of the Upper Sacramento Valley and west to the Trinity Mountain Range.

It’s hard to beat such an experience; however, Fred explains, “Do it with a glass of Cabernet Sauvignon in your hand and it gets even better.”

When the couple bought the property on Forward Road in 1999, it was rocky, brush-covered ground. Right away, Fred began the arduous task of clearing six acres of the 10-acre property in preparation of planting a vineyard.

“Having a vineyard was something I always wanted to do,” said the self-taught winemaker. “I really never thought I’d be able to do it, but we thought, ‘What the heck,’ and decided to take the chance.”

The couple quit their jobs, Donna working for the Tehama County Conservator and Public Guardians Office and Fred a long career in construction.

“It was such hard work. It began when I was 54 years old and I could pretty much do all the work myself,” Fred said. “I planted it all myself. When I hit 60, I needed a bit of help. When I hit 65, I needed a lot of help, and now that I’m 71, I find I can do very little myself.”
However, his heart is still in it as he lives a dream come true.
With Fred getting his hands dirty, Donna has been busy running the clerical end of things.
“I do all the bookkeeping, keeping up on rules, regulations and compliance, ordering supplies and paying the bills,” she said.

By 2004, the couple built Indian Peak’s winery building and were living on the property by 2005, moving from their home in Cottonwood.

According to Fred, there are two things that brought them to the Manton area when they decided to open a vineyard.

“First is the temperatures; it can be 105 degrees [F] during the day in August and at night down to 55 degrees [F],” he said. “I like the Bordeaux varieties, and you really need big temperature swings to develop the flavors in the Bordeaux varietals.”

As Fred talks about the origins of the Bordeaux varieties of grapes in France, his love the of winemaking is palatable, right along with its hard work, sacrifices, stresses and sobering realities.

“I planted Cabernet Sauvignon and Merlot first on the six planted acres,” he says. “70% is in Cabernet, with a little of each of Cabernet Franc, Malbec, Petit Verdot, and to really mix things up a bit, I threw in some Cabernet Blanc to produce a white wine.”

Indian Peak’s grapevines thrive on the rich volcanic soils in the region.

The vineyard’s tasting room is homey and welcoming in its simplicity.

Fred says they don’t need anything fancy as the wine sells itself.

“We have had so many truly loyal customers over the years,” Donna said. “Many who have become some of our closest friends. Along with that, we have been host to people from all around the world.”

To share that point, the tasting room is home to a world map littered with dots representing people who have visited Indian Peak from across the globe.

“No two guests are the same, and we really try to make everyone feel like this is right where they need to be,” Donna added.

To keep things simple and provide the couple with the time it takes to successfully operate a vineyard and winery, the Boots live in a fifth-wheel travel trailer adjacent to the building housing the tasting room and winery.

“That provides a lot of convenience,” Fred says.

There was a time when Indian Peak had another partner in the mix, the Boots’ daughter, Christie, and her husband, Trevor, who successfully ran the marketing side of the operation.
However, when Christie passed away, life in the vineyard became a bit difficult on many levels.

Down but not out, the couple laced up their boots and kept going, serving their lovingly created wines, holding special tasting events, annual stomping of the grapes, annual blessing of the grapes and much more.

When visiting Indian Peak, guests are first welcomed by a tall, wooden statue of an Indian warrior at the entrance to the 2,400-square-foot tasting room winery.

The building contains the tasting room, offices, lab room, bottling room, bathroom and storage for tanks, barrels and wine.

The Vineyard
In Manton there are “Red, red, red volcanic soils abound.…,” thanks to volcanic Mt. Lassen, which has helped to provide 28 different soils. These are mostly characterized by gravelly loam and sandy loam found throughout the region, and the soils in general are well draining.

The top Tuscan formation created a significant aquifer within the Battle Creek watershed providing ample annual water.

Indian Peaks Vineyard has dedicated water rights from the state of California, allotted 1.3 decreed miners inches of water, equal to approximately 11 gallons per minutes (GPM). The source of the water is springs and snow melt from Mt. Lassen to the east. The water is delivered from the mountain by the Crooker-Harrison Water Ditch, which serves several neighboring properties, as well as the vineyard.

Fred and Donna Boots have enjoyed the dream of owning and operating a vineyard and winery for since 1999 when the purchased property in Manton, Calif. to develop Indian Peak Vineyard (photo by J.R. Johnson.)

The water is then distributed throughout vineyard acreage through a drip irrigation system.

American Viticultural Area
The Manton region has been designated a Vineyard American Viticultural Area (AVA) since August 2014, designating it as a wine grape-growing region in the U.S. distinguishable by geographic features, with boundaries defined by the Alcohol and Tobacco Tax and Trade Bureau (TTB) of the U.S. Department of the Treasury.

The Federal government officially sanctions the effort to identify truly one-of-a-kind winegrowing districts through its system of “American Viticultural Areas” or “AVAs.”

When appearing on a label, these legal place names impart to the consumer important information and guarantees about the wine’s origin. By law, to use one of these official site designations, 85% of that bottle’s grapes must have been grown within the AVA’s boundaries.

Fred Boot enjoys a taste of one of his Indian Peak-grown-and-produced red wines (photo by J.R. Johnson.)

Created in August 2014, the Manton Valley AVA consists of 9,800 acre and now Indian Peak Vineyard and Algian Vineyard.

Estate Bottled means the winery listed on the label owns or controls 100% of the grapes that went into the bottle, and the wine was crushed, fermented, finished, aged and bottled all in the same place, and that place must be located in the same viticultural area. Indian Peak falls under this category with Fred and Donna doing all the work to produce award-winning wines.

Winemaking
Other varietals, such as Zinfandel, Syrah and Chardonnay, are purchased by the Boots from other local vineyards in Tehama and Shasta counties.

Fred said all the wines are crushed, fermented, barrel aged and bottled on location at the winery, and he personally oversees and makes knowledgeable adjustments to the entire process.

He especially enjoys his “job” when he gets to pull the wine from the barrels to test it.
Indian Peak Vineyards has won gold, silver, and bronze medals in international competitions and at the state level for several of its wines.

Indian Peak offers free wine tasting hosted by the Boots where everyone is encouraged to bring a picnic lunch and enjoy the beauty of the surrounding Sierra Nevada.

The winery can accommodate groups of up to 30 people for special events.

Wine tasting is by the glass with a volume discount and an even larger discount for wine purchase by the case.

“I like to believe we quite possibly offer the best wine tasting available,” says Fred.
“You never know who you will meet next and how they may enlighten you or speak to your soul,” Fred said, “or just simply share a recipe sometimes in these casual conversations about winemaking, types of grapes and the benefits of growing grapes and producing wine, all with your very own hands and heart.”

Because the Boots’ are no longer spring chickens and the work of keeping up with the vineyard is difficult and never-ending, the couple has decided to call it a day and have placed Indian Peak on the market.

“Sometimes, the thought of leaving the place is really difficult, but after a hard day’s work, it doesn’t sound so bad,” Donna added. “Especially for Fred, this has been a dream come true and we wouldn’t have done it any other way. Some of our best memories are planted right here in this soil.”

Fred sits back and opens a bottle of one of his favorite Bordeauxs, pours it into a glass and offers a toast to Indian Peak Vineyard, a two-man, oops, a one-man and one-woman, never-too-old-to-take-the-chance success story.

Sustainable Story Series: Part 3 Managing Pests in Eco-Friendly Ways: Strategies from Sustainable Winegrowers

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Managers of sustainably farmed vineyards value safe pest management by using integrated pest management strategies (photo courtesy Vineyard Team.)

If you have devoted time to a home garden, you have experienced the frustration of managing weeds, insect pests, rodents and plant diseases.

Pests can cause so much damage to your months of hard work that you have to discard a sizable portion of your harvest, or even remove plants completely. They damage your precious produce, steal resources like water and nutrients, bore into plants and accelerate decay, and spread disease. To a commercial farmer, damages like these can devastate their business.

Each year, 20% to 40% of global crop production is lost to pests, costing nearly $300 billion (FAO 2019). Damages of this magnitude divert human and economic resources and compromise our food supply.

So then, what is a grower to do when they find their crop has become home to pests?
They implement an informed and tailored approach to manage their farm’s unique and dynamic pest complex, one that lessens the damage and economic burdens brought about by pests without causing harm to the ecosystem.

Managers of sustainably farmed vineyards value safe pest management strategies. They manage pests in ways that minimize economic damage to their crop, protect the environment, are safe for their workers and produce a quality end-product. This is achieved by implementing integrated pest management (IPM) strategies.

According to the United States Department of Agriculture, IPM is “a science-based decision-making process that combines tools and strategies to identify and manage pests.” This sustainable approach to pest management combines strategies from four different control categories: cultural, biological, mechanical/physical and chemical.

For an IPM strategy to be successful, a sustainable vineyard steward must have a broad knowledge of pests, their lifecycles and their habitats. With this knowledge, a vineyard manager can create a safe pest management strategy that makes the vineyard ecosystem less hospitable to pests in the first place.

Bird boxes incite in vineyards the presence of barn owls, a common and effective form of biological control for rodents (photo courtesy Vineyard Team.)

Cultural Controls
Cultural controls aim to disrupt a pest’s habitat. This reduces a pest’s ability to establish themselves, reproduce and thrive.

Many winegrowers manage powdery mildew through cultural controls. Mildew thrives in dark, damp environments. Thinning leaves on vines improves airflow and light penetration through canopies, helping to reduce mildew pressure.

Biological Controls
Biological controls use the power of nature by encouraging natural predators and beneficial insects into the vineyard to help manage pests. You can see evidence of this practice in action from a distance at nearly any sustainably grown vineyard.

Barn owls are a common and effective form of biological control used in vineyards. Farms install owl boxes throughout their vines, giving birds the perfect viewing place to spot scurrying critters and raise the next generation of gopher-getters. It is a mutually beneficial relationship that provides owls with hunting and nesting grounds and gives growers an eco-friendly way to keep rodent populations down without relying on chemical rodenticides.

Mechanical/Physical Controls
Mechanical and physical controls are direct interventions between a pest and a crop. These tools include bird netting, rodent traps, deer and hog fencing, and mulching.

Covering the ground between vine rows with a mulch material like yard waste, wood chips, straw or hay is an effective way to reduce weed pressure. The mulching blocks out light, and without light, weed seeds cannot germinate. This practice has additional benefits of reducing soil erosion, preserving soil moisture, insulating the soil from extreme heat and cold, and increasing soil organic matter.

Wolff Vineyards’ Jean-Pierre Wolff placed PVC pipes vertically into the ground at the depth of each rootstock to reduce irrigation needs and ended up with a sustainable way to also mitigate weed and vertebrate pest pressure.

Chemical Control
While chemical intervention can be necessary, sustainable vineyard stewards explore this option once the other three methods have been used. The selection and application of pesticides are done in ways that minimize possible harm to people and the environment. This means choosing safer active ingredients that don’t contaminate air, soil and water, or pose threats to humans or non-target organisms. When a sustainable grower makes targeted applications, they minimize the treated area and ensure only appropriate areas are treated.

Compounding Benefits
Because sustainable farming is holistic, growers often find that one good practice has an unexpected positive impact on another resource. This was the case for Jean-Pierre Wolff, owner of SIP Certified Wolff Vineyards in San Luis Obispo, Calif.

A cultural modification intended to reduce his irrigation needs turned out to have what he calls an “indirectly obvious” benefit: less pressure from weeds and vertebrate pests.

While redeveloping a portion of his vineyard in 2017, Jean-Pierre Wolff decided to convert to drought-resistant rootstocks. And then he did something novel: He planted them three feet into the ground.

Since a standard drip irrigation system wouldn’t be able to efficiently hydrate the deep roots, he needed to develop a system that would.

Deriving inspiration from an African palm farming technique that utilizes bamboo sticks and coke bottles for irrigation, Wolff placed PVC pipes vertically into the ground at the depth of each rootstock. Through these PVC pipes, water and fertilizer are delivered directly to the rootzone.

He compares this system to an IV. In a traditional drip irrigation system, water and fertilizer need to move through multiple layers of soil before reaching the roots. With this direct delivery method, nothing is wasted in the parts of the soil that contain no roots.
This innovative subsurface irrigation technique achieved Wolff’s original goal of reducing the amount of water required to irrigate the vines by 30% to 50%.

It also reduced the pressure of native and noxious weeds in his vineyard.

Since many weeds have shallow roots, they cannot reach the water and fertilizer that are applied three feet under the ground’s surface. This cultural practice created an environment where weeds can’t access the resources they need to securely establish themselves, and therefore cannot thrive.

Vertebrate pests have also had little success establishing themselves in the blocks of deeply planted vines. Since many rodents do not regularly dig to these depths, the subsurface irrigated blocks see far less damage. Much of a plant’s vitality relies on its root system. Root damage caused by rodents can cause lower yields and outright vine death.

Safe pest management strategies offer growers a variety of tools to help them manage complex pest issues. Wolff’s story is just one example of how sustainable winegrowers take a mindful approach to combat dynamic pest concerns in eco-friendly ways.

With heightened awareness about the environmental and social impacts of conventional agriculture, it’s no surprise 85% of global consumers have become “greener” in their purchasing decisions (Simon-Kucher & Partners 2021).

If you’re not sharing the story of your sustainably minded business, now is the time to start. Help the growing number of eco-conscious consumers choose your products by letting them know they are produced in environmentally responsible ways.

Telling your sustainable story makes your business stand out for not only recognizing the health and resource issues currently being faced but acting to address them.

Want to hear more stories about how sustainable winegrowers and winemakers are raising the bar? Next time, we’ll share the story of how an estate vineyard and winery in Arroyo Grande, Calif. made many small changes around their property that compounded to have a massive impact on their overall energy use.

Certified Organic Vineyards

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Christopher Carpenter, winemaker at Jackson Family Wines, which recently announced certification for 15 Napa vineyards as organic, says the beauty of organic vineyards lies under the vines (photo courtesy Jackson Family Wines.)

Jackson Family Wines added a significant new milestone in fall 2023: It announced certification for 15 Napa vineyards as organic, according to the Certified California Organic Farmers (CCOF), a USDA approved organic certifier. Jackson Family Wines reported the total acreage planted to vine is 480 acres.

That makes it the third largest organic vineyard owner in Napa behind the Lawrence Family’s Demeine Estates (633 planted acres) and Yount Mill Vineyards (557 planted acres).
Currently, just under 14% of Napa vines are certified organic.

“I firmly believe agriculture should lead the way in redefining our relationship with the planet as a species,” said Christopher Carpenter, winemaker at Jackson Family Wines who works with their high-end Napa brands. “This organic certification in Napa represents the initial step as we progress toward regenerative organic certification and continue to foster harmony between the natural world and the agricultural world.”

Organic vineyard acreage is increasing throughout California and Oregon (photo by Julie Johnson.)

A long-standing board member and former chair of Slow Food USA, who also started the Napa chapter, Carpenter makes the wines for four of Jackson’s Napa brands (Cardinale, Lokoya, La Jota and Mt. Brave).

Carpenter’s partner in the conversion was vineyard manager and organic farming veteran Rafael Jimenez who has been head grower at Jackson’s Freemark Abbey in Oakville for five years.

The two brought in compost (typical in organic viticulture) to increase organic matter in the solid and adopted no till farming. They also had sheep graze in the spring for weed control.
Carpenter said the beauty of organic vineyards lies under the vines.

“One of the factors of organic you’ll learn to live with is it’s not the prettiest thing in the world [i.e. there’s weeds on the vineyard floor],” he said in a YouTube video. “But if you were to open up these soils and look at what’s going on in the soil health, that’s beauty unto itself. The soils are as healthy as they’ve ever been. And what we also ultimately do is just incorporate these weeds back into the soil to raise the nitrogen level and get ready for next year’s early ripening,” he said.

His remarks were captured in a 2023 video tour of the 27-acre Wurtele vineyard in the Spring Mountain AVA.

Top Mountain Sites
Mountain vineyard sites are responsible for 554 of the certified acres, the type of terroir founder Jess Jackson famously preferred.

1. Potelle, Mount Veeder AVA | 202 acres
2. Keyes, Howell Mountain AVA | 109 acres
3. Veeder, Mount Veeder AVA | 61 acres
4. La Jota, Howell Mountain AVA | 41 acres
5. Rhyolite Ride, Diamond Mountain District AVA | 39 acres
6. Atalon, Diamond Mountain District AVA AVA | 30 acres
7. Wurtele, Spring Mountain District AVA | 27 acres
8. Lokoya, Spring Mountain District AVA | 24 acres
9. Ho, Mount Veeder AVA | 11 acres
10. Wallis, Diamond Mountain AVA | 10 acres

Grapes from these vineyards go into wines under the Cardinale, Freemark Abbey, Lokoya, La Jota, Mt. Brave and Caladan brands.

Three additional newly certified organic vineyards have historic significance since they surround the 1886 Freemark Abbey winery.

• VanZ, St. Helena AVA | 5 acres
• Ahern in St. Helena AVA | 4 acres (at Freemark Abbey)
• Freemark Abbey, St. Helena AVA | 2 acres

Its Howell Mountain La Jota wines go for $100 to $175.
Jackson also has 80 acres of vines certified organic at its Cardinale estate on the valley floor in Napa. The estate wine sells for around $350.

Lokoya is the brand that relies most on the mountain fruit from the Diamond Mountain District, Howell Mountain, Mount Veeder and Spring Mountain District appellations. Carpenter makes single vineyard designates under the Lokoya label from each of the four AVAs. They’re priced at about $450.

Jackson Family Wines’ relationship with organic grape growing has deep roots. In 2000, founder Jess Jackson hired French Rhone winemaker Philippe Armenier to plant biodynamic vines around Jackson’s home in Alexander Valley in Sonoma County. That was the same year Sonoma County neighbor Benziger Winery officially adopted biodynamics.

Armenier came to the U.S. from Domaine Marcoux, his family’s 40-acre Chateauneuf du Pape estate winery, which in 1990 was the first in the region to adopt biodynamic farming. They were later the first in the Rhone to receive a 100-point score from Robert Parker.
Though the Jackson-Armenier relationship was brief, it was notable as a sign of things to come, albeit 23 years later and in Napa organics, not Sonoma biodynamics.

More Large Organic Vineyards in Napa
Demeine Estates owns historic blue chip Napa wineries Heitz Cellar, Stony Hill, Burgess and others. Mark Neal has overseen organic vineyard management on its 633 acres (certified organic as well as biodynamic). An additional 18 acres is currently in the three-year transition period (this does not include Martha’s Vineyard (33 acres) which it sources from exclusively and is owned by a different family.)

The oldest large organic vineyard owner in Napa is Yount Mill Vineyards, owned and farmed by descendants of the Pelissa family and certified first in 1995. They sell most of the fruit from their 557 acres but retain roughly 10% for four family-owned brands.

Other big names in Napa with certified organic vines include Grgich Hills (336 acres), Inglenook (230 acres), Frog’s Leap (200 acres), Opus One (169 acres), Quintessa (160 acres), Raymond (156 acres), Stags Leap Wine Cellars (145 acres) and Robert Sinskey (115 acres). All are certified by CCOF, a Santa Cruz-based certifier, accredited by USDA’s National Organic Program (NOP), which sets the national standards.

Other leading organic certifiers in U.S. wine circles accredited by NOP are Organic Certifiers, Oregon Tilth, the Oregon Dept. of Agriculture and the Washington State Dept. of Agriculture.

Unlike sustainability certifications, organic certification is protected by federal law. Organic growers are eligible to receive grants that reduce certification fees.

Organic Leaders in California and Oregon
Outside of Napa, one of the biggest organic vineyard owners in California is WC Ag (Fred Franzia) in Ceres in the Central Valley with 1,600 acres. Others are Castoro Cellars (1,400 acres), Scheid Vineyards (667 acres with 2,000+ more planned) and grower French Camp in Santa Maria (472 acres). In 2023, Kylix Vineyards (affiliated with Grapevine Capital Partners, which has previously represented Harvard’s endowment investments) certified 485 acres of vineyards organic in Paso’s San Juan Creek AVA.

Trinchero Estates certified 183 acres in Yolo County in August 2023.

In fine wine circles, there’s Ridge Vineyards in both Sonoma and Santa Clara counties (379 acres), Daou in Paso Robles (212 acres) and Tablas Creek, also in Paso Robles (130 acres). In Santa Barbara County, Stolpman (181 acres), Sea Smoke (170 acres) and Beckmen (150 acres) lead in organic and/or biodynamic certified acreage.

In Oregon, the eco-certified list includes Momtazi Vineyard (260 acres), Montinore Estate (230 acres) and Cooper Mountain Vineyards (200 acres), which are all certified biodynamic (requires meeting organic standards as a baseline). Lemelson Vineyards has 125 acres and Domaine Drouhin will soon have 130 acres (it’s currently in the three-year transition required for organic certification.) The legendary Temperance Hill (100 acres) was one of the first growers in Oregon to be certified organic.

Rootstock Research Reaches for Drought Resistance

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Canopy of vines on GRN2 rootstock, close to harvest in 2021 drought year. Rootstocks like GRN2 are good at mining water from the soil (photo courtesy Tian Tian, UCCE.)

Vineyard rootstocks find water, scions spend water.

The relationship between the two needs to work to produce grape yields and quality, but researchers know if drought conditions persist, rootstocks that can perform on less water must be developed.

Most grapevines are grafted on a rootstock, the underground part of the plant that supports growth aboveground. Grapevines are deeply rooted with more than 25% of root biomass typically distributed below one meter.

Luis Diaz Garcia, assistant professor in grape breeding in the Department of Viticulture and Enology at UC Davis said drought resistance research is ongoing, exploring different adaptive strategies in a variety of grape germplasm and developing novel approaches to screen drought tolerance traits more efficiently. Diaz Garcia said his laboratory is using genomics, robotics, proximal sensing and artificial intelligence to increase the efficiency in identifying superior-performing vines.

These approaches, he said, can increase the number of plants evaluated in the program and reduce the time it takes to find and test the new rootstocks.

Diaz Garcia explained there are several mechanisms by which a grapevine can tolerate drought. Those include closing its stomata (small pores on the surface of the leaves that facilitate gas exchange and transpiration) to prevent water loss, limiting growth and modifying its root architecture to explore more soil area and extract water.

“The challenge is not all of these adaptive mechanisms are compatible with vineyard production systems. Therefore, understanding these mechanisms is crucial for selecting the best/most informative traits to screen in breeding programs,” he said.

The goal of the UC research, Diaz Garcia explained, is to develop new rootstocks with improved water-use efficiency and other adaptive traits such as nematode tolerance and good grafting and rooting capabilities. New root traits that help with drought resistance have been identified by UC researchers.

Drought Responses
Megan Bartlett, Department of Viticulture and Enology, said with identification of these traits, they can be amplified in new grape varieties. A UC publication outlined her study findings. Contributing to her study were researchers from University of British Columbia and the USDA-ARS Crops Pathology and Genetics Research Unit.

Bartlett’s research focused on drought responses in living root cells. Capitance, a measurement of how much roots shrink as they dehydrate, is an important trait for drought tolerance. Water stress can cause roots to shrink and pull away from the soil, losing access to any soil water. When the scion is unable to replace the water lost to evaporation, the stomata are closed to prevent severe dehydration. However, this stops photosynthesis. Rootstocks with lower capitance maintained greater gas exchange under water stress, suggesting adjustment in root structure and biochemistry to retain greater root volume could improve belowground hydraulic function under drought conditions. Bartlett’s study was the first to test whether traits measuring root shrinkage and cell collapse can capture differences in rootstock drought tolerance.

Canopy size of different rootstocks tested for drought resistance. UCCE Viticulture Advisor Karl Lund notes there is a lot of variation among rootstocks in how they handle water stress (photo courtesy K. Lund.)

Karl Lund, UCCE viticulture advisor in Madera, Merced and Mariposa counties, said most of the work in drought tolerant rootstock development is focused on the winegrape segment as there is funding available. Bartlett’s study was supported by the American Vineyard Foundation, UC Davis and by private donations.

“What does drought tolerance mean?” Lund asked. “Is it when a rootstock is good at dealing with low irrigation like 70% of ET over the season, or is it the ‘broken pump’ problem where there is no water available for a period of time, and when it is, will the rootstock recover?”

Lund explained there is a lot of variation among rootstocks in how they handle water stress. Some, he noted, are good at mining water from the soil or can find water in the soil. An example is the GRN3 rootstock’s ability to find water.

One challenge to development of a new rootstock is time. Lund said with drought tolerance in mind, first you have to grow the plant, then it takes multiple years to determine its value as drought-tolerant. Field trials for drought tolerance are also difficult to do in wet years.
In comparison, a rootstock trial for nematode resistance takes six months to two years.
Use of genetic markers to make crossbreeding selections for rootstocks can speed up the process, but the rootstock’s performance in the field for crop yield and quality also must be considered.

Scion Plays a Part
The scion grafted to the rootstock also plays a part in drought tolerance. The rootstock may find the water needed for production, but it is the scion that decides when to open stomata for transpiration. Canopy size is also controlled by both the rootstock and the scion. Larger root systems handle drought by finding water, but they also support a larger canopy.
Lund said he has found situations where a drought-resistant rootstock develops a large canopy that can still handle water stress when the rootstock and scion work as a team. Some incompatibility issues between rootstocks and scions have arisen, but Lund said viruses may play a part in that.

When choosing a grapevine rootstock, Lund said the first question is how much tonnage do you want? That figure varies depending on the region. In the San Joaquin Valley, desired winegrape tonnage is high. In the wine country to the north, lower tonnage is preferred, he said. 7 tons to the acre is too much for winegrape growers in the Napa and Sonoma growing regions; they prefer about 3 to 5 tons per acre and desire a lower-vigor rootstock.

Wine and Food Pairings Can Be a Complex Art

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Martha Stoumen’s Negroamaro Rosato goes well with salami and cheeses (photo by Andrew Thomas Lee.)

Conventional wisdom will tell you beef goes best with red wine, and white wine is best with fish. The truth, however, is pairing the right wine with your meals, desserts and cheeses is much more complex.

“In my experience of preparing food to be enjoyed with wine, I’ve learned that it’s not about finding the ‘perfect pairing,’” said Sarah Scott, executive winery chef at Opus One Winery. “These can be elusive. Rather, it’s about consistently cooking with excellent, seasonal products and mindfully balancing the umami, salt and acid ingredients within each dish. This allows the wine to taste as the winemaker intended.”

“We consider body and texture when considering food pairings for our wines,” said Nina Kravetz, head of marketing and direct-to-consumer sales at Martha Stoumen Wines. “Lush and textural wines like our historic Out to the Meadow field blend or aged Negroamaro Rosato keep us craving salty foods with a compelling char. When bright and brooding wines like carignan and pinot noir are on the table, we lean on more decadent dishes that could use a companion to cut through the fat.”

“When you’re doing food pairings, there are some basic rules,” said William Allen, owner and winemaker at Two Shepherds, who provided an example. “Try to avoid completely opposite wine pairings. Generally, if you’re matching wines with acidity, you typically want to pair them with foods that have acidity.

“One of the things in pairing that is often very difficult is spicy foods,” he said. “Most wines will clash with spicy foods. That’s why a lot of people drink beer with spicy food. Big bold fruity wines don’t work because you’re clashing fruitiness with spiciness.”

Opus One wine paired with seared Sonoma duck breast with sautéed spinach, cremini mushrooms and a crispy polenta cake (photo courtesy Opus One Winery.)

Seafood Pairings
“Penfolds BIN 311 Chardonnay has vibrant citrus fruits and pronounced minerality,” said Ellie Farrell, public relations manager at Treasury Wine Estates, which has more than 40 wine brands including Beringer Vineyards. “For the same reason, we love a squeeze of lemon on crab legs, shrimp and oysters. The crisp citrus flavors are the perfect foil for briny shellfish.”

“Some of our lighter reds like our pinot meunier go great with salmon,” said Allen. “But we’re not talking about white steak fish. We also have the vermentino that would definitely pair with summer foods, summer salads, oysters for sure and other kinds of seafood.”
But pairing wine with seafood can be a challenge.

“It depends on your seafood,” said Allen. “What’s the sauce on it? Is it a cream sauce? Is it just grilled with nothing on it? You can take a fish dish and make it completely different depending on how you’re preparing it.”

Martha Stoumen’s Post Flirtation White can be paired with sliced vegetables and dip (photo by Emma K. Morris.)

Meat and Pasta Pairings
“We often recommend barbecue,” said Gillian Balance, Beringer Bros spokesperson and master sommelier, about food pairings with their cabernet. “Sweet, smoky, tangy sauces really play up the toasty oak characters, while the dark berry fruits and tannins provide the perfect contrast to savory meat platters.”

“The Beringer Knights Valley Cabernet Sauvignon is a delicious cabernet-driven blend with ample dark fruits,” said Farrell. “The well-integrated tannins and fruit-driven profile are the drivers of the wine’s versatility, allowing it to pair beautifully with any number of dishes, including roasted chicken, grilled beef tenderloin and pasta dishes with meat or mushroom sauce.

“The spicy, charred flavors from heavily toasted bourbon barrels add another dimension to the dark fruits in our Beringer Bros Red blend, which pairs well with smoked meats and barbecue,” she added.

Roasted lamb chops, duck and Wagyu New York Strip are among the meals that go best with Opus One, according to Christopher Barefoot, vice president of communications and guest relations at Opus One Winery.

Overture, the other wine produced by Opus One Winery, pairs best with “risotto with mushrooms, or any pasta with hearty mushroom sauce and a truffle or two on top,” said Barefoot, who also suggested meats with chimichurri and roasted root vegetables, and “even a grilled burger with sharp cheddar cheese and a medley of summer vegetables like summer squash or summer beans.”

Opus One wine paired with roasted lamb shop with celery root purée and summer vegetables (photo courtesy Opus One Winery.)

Martha Stoumen’s cabernet blends like Another Shore 2021 go well with hearty dishes, those that are fattier and meatier such as sausage and schmaltzy chicken, according to Kravetz, adding Honeymoon goes well with continental fare.

“Our white Honeymoon blend is also a holiday favorite,” she said. “It’s fun to cook while you drink the wine.”

Allen, who describes his Rosé of Cinsault as a complex wine to be served with a little chill, said, “You can pair it with things that are savory. Duck is good, so is lamb. You would also pair it with typical summer fare, particularly hamburgers, hot dogs and barbecue ribs. It’s got a nice freshness and a little bit of structure.”

Cheese Pairings
“Sharper cheeses are best, harder vs soft, and with a good amount of age, including aged gouda, ewephoria, seascape, fiscalini cheddar, comet and toma,” said Barefoot about Opus One pairings, adding the recommended cheeses with Overture are similar to Opus One since they are both cabernet wines.

“What you want to avoid is soft rind, creamy cheeses like French bries, and triple cream such as Brillat-Savarin, St. André, etc.,” he added.

“With so many wines in our portfolio, and the incredibly diverse world of flavors and textures in cheese, I often will recommend a delicious ‘bridge’ wine, something that will work with almost any cheese,” said Farrell. “A great example is our Etude Pinot Noir from Grace Benoist Estate in Carneros. The wine offers subtle red fruits, earthy tones and silky texture, making if the perfect backdrop for mild, earthy cheeses like tomme, manchego, gouda and mild cheddars.”

Dessert Pairings
“Many popular desserts have one or all of the following: nuts, caramel, butterscotch, chocolate or dried fruits,” said Farrell. “When describing our Penfolds Club Tawny Port, all these flavors are mentioned. There is also enough sweetness to match desserts like sticky toffee pudding, crème brulée or ice cream with caramel sauce.”

Allen, however, is not as enthusiastic about pairing wines and desserts.

“For me, generally, pairing dry wines and desserts is a challenge,” he said. “Maybe in the summertime, like a watermelon or a fruit salad, but definitely not a typical sweet dessert like cake or brownies. This is why typically dry red wines and chocolate don’t go very well even though people try to sell you red wines and chocolate at Valentine’s Day. It’s actually one of the worst kinds of pairings there is.”

Temperature vs Wine Flavor
“Think about temperature,” said Allen. “You wouldn’t have a dinner party and serve a carrot soup out of the refrigerator. You would heat it up.

“I always tell people, if you don’t have a wine cellar, which a lot of people don’t, take your red wine off the counter and put it in the fridge for 15 minutes, and take your white wine out of the fridge for 15 minutes,” he continued. “Remember the temperature of the wine dramatically impacts the flavor of the wine and thus the food pairing as well.

“95% of people drink their red wines too hot and their white wines too cold. So, you’re completely throwing off the food pairing because the temperature of the bottle characteristics changes. When your red wine is hot or warm at 70 degrees [F] on your counter, it’s not the proper serving temperature for an elegant red. You’re going to make the alcohol really stand out.

“On white wine, most people do the exact opposite. They pull them out of the fridge, which is 38 degrees [F]. If you’re buying ‘Two Buck Chuck,’ you would never put ice cubes in it and put it in a blender.”

‘Be Creative’
Winemakers are always learning about new pairings for their wines.

“Don’t stick to the old adages,” said Allen. “That’s a very outdated thing, white wine with fish, or red wine with meat. There’s a whole row of things in between that. Just be diversified.

“It’s fun to be creative,” he added. “I think people fixate too much on getting the food pairings exactly right. We will often have two bottles open and try them with both courses of the meal. Sometimes you’re pleasantly surprised.”

Martha Stoumen’s webpage offers visitors an opportunity to be part of the Cookbook section of its Field Notes by reporting and describing the new food and wine pairings they have discovered.

“We get a lot of reminders that wine pairings don’t need to be Eurocentric,” said Kravetz. “There are many flavors to be trying such as tacos and Middle Eastern food.”

But if you aren’t feeling especially creative, please note that wineries often include suggested food pairings on their websites.

Masters of the Vineyard

Growing the Grape and Wine Industry One Reader at a Time (photo by Brennan Spark.)

The winegrape harvest has been finished for a week when brothers Steve and Mike Sangiacomo meet in their Sonoma office to catch up on some overdue indoor business.
Outside, the vineyards are quiet, their leaves turning to shades of gold and burgundy. There’s a sense of relief in the air on this November morning, and it’s not coming only from the fields.

“It was a successful harvest that definitely tested the resiliency of us as growers,” said Steve. “It even tested the resiliency of the grapes themselves. It was one of our longest growing seasons since 2005.”

Multiple rain events and unusually cool temperatures threatened the crop early on. But things began turning around after heat spikes in September and October enhanced ripeness and bolstered grape quality.

“It’s shaping up to be an exceptional vintage,” Steve added.

That’s good news for the Sangiacomos and for the 90 wineries who source their grapes from this third-generation farming operation. For more than 50 years, Sangiacomo Family Vineyards has been growing premium Chardonnay and Pinot Noir grapes for winery partners. Today, the Sangiacomos farm 1,600 acres across 15 vineyards in the Carneros, Petaluma Gap, Sonoma Coast and Napa Valley regions. Their vineyard expertise in one of the world’s premier wine areas has earned them a long list of loyal customers and a litany of industry awards.

“To put it simply, they are one of the best growers of Chardonnay in the world and a pleasure to work with,” said Richie Allen, senior director of winemaking for Rombauer Vineyards in St. Helena, in nearby Napa Valley.

He’s not alone in his estimation of the Sangiacomo operation. In 2020, the Sonoma County Farm Bureau honored the family with the Luther Burbank Conservation Award for balancing economic viability with environmental stewardship. In 2019, the Sonoma County Harvest Fair presented the Sangiacomos with its Sustainable Farmers Award.

Most recently, the California Association of Winegrape Growers (CAWG) named Sangiacomo Family Vineyards its 2024 Grower of the Year. In announcing the award, CAWG paid tribute to the Sangiacomos’ “pioneering spirit, commitment to sustainable practices, innovation and community engagement.”

The family’s goal is to maintain winegrape quality while farming more efficiently, says Mike Sangiacomo (photo courtesy Sangiacomo Family Vineyards.)

Family Roots
The Sangiacomos’ success didn’t happen overnight. The family has been farming in Sonoma County since 1927 when Italian-born Vittorio Sangiacomo purchased a 52-acre fruit-tree ranch just 2.5 miles from Sonoma’s historic city square. For years, the family grew pears on its home ranch.

Vittorio may not have been thinking of viticulture back then, but he had chosen land perfect for what his grandsons call “amazing vineyard sites.” In 1969, the Sangiacomos planted their first vineyard. By the 1980s, the conversion from orchards to vineyards was complete. Over time, the family expanded its acreage. Today, Vittorio’s grandchildren, Mike, Steve and their sister Mia Pucci, lead the operation, helped by other family members and 120 employees.

The 2023 growing season “definitely tested the resiliency of us as growers,” says Steve Sangiacomo (photo courtesy Sangiacomo Family Vineyards.)

In 2016, the Sangiacomos took on winemaking, launching their own estate brand. The label bears the “Sangiacomo Wines” name on its bottles of Pinot Noir, Chardonnay and Cabernet. Five years later, they began offering wine tasting and vineyard tours on the home ranch, now part of the Carneros American Viticultural Area. A recent wine tasting on the “Home Ranch Terrace” featured the Sangiacomo 2021 Sonoma Coast Chardonnay, which earned a 93-point, or “excellent,” score and an Editors’ Choice recognition from Wine Enthusiast magazine.

Yet the addition of winemaking is only a small part of the family’s business, amounting to about 4,000 cases a year, or just 2% of the fruit they grow. The rest of their winegrapes are custom grown for wineries whose annual volumes range from a thousand to hundreds of thousands of cases. The Sangiacomos work collaboratively with their clients, discussing varietals, clones, farming practices and appellations. Together they then select a match from over 300 small vineyard blocks. The Sangiacomos’ pride in their winery partners shines in the foyer of their Sonoma office, where a wall lined with dozens of their customers’ wine bottles dominates the room.

Staying Ahead of Challenges
As custom farmers, it makes sense for the Sangiacomos to have a broad customer base to minimize their farming risks. And there are plenty of those.

“You can do everything right in the vineyard, but Mother Nature can come in and take your success away in one vintage,” said Mike.

Like other grape growers, the Sangiacomos wrestle with weather and climate change, emerging plant viruses, labor shortages, water uncertainty, increasing regulations, energy needs, rising input costs, shifting market conditions and the lingering impacts of the pandemic.

Dozens of customers’ wines line the foyer wall in the Sangiacomos’ Sonoma office (photo by C. Merlo.)

“In our dad’s, uncles’, aunts’ and grandparents’ age, it was really more about just producing the best quality product you could,” said Mike. “Today, the challenge is continuing to evolve and stay ahead of all the issues.”

Added Steve: “We feel the responsibility to deliver a premium product. If we do not, a lot of these wineries are not going to have wine to sell, which is going to affect their businesses along with ours. So, we’re going to do everything we can to achieve that.”

As a result, the Sangiacomos have made sustainable winegrape growing a priority. In 2015, all Sangiacomo vineyards received 100% sustainable certification from the California Sustainable Winegrowing Alliance. That year, too, the family’s vineyards were also certified under the Fish Friendly Farming program for land management practices that protect fish habitat. Among their vineyard sustainability practices, the Sangiacomos have adopted water conservation, soil management and erosion control (e.g., planting cover crops and riparian strips).

An overview of the Sangiacomos’ home ranch near Sonoma. The large building at lower right houses their offices and wine tasting space (photo courtesy Sangiacomo Family Vineyards.)

Increasingly, the Sangiacomos also are seeking ways to use less energy, and they’re going electric where they can. They’re already using electric pressure washers, for example, and next year, one of their vineyards will use an electric tractor for the first time. They also plan to expand the use of solar panels for additional electric power. They’re investing in mechanized weed management for vineyard floors and canopies.

But this farming family relies on other strengths too. The brothers cite the family’s longevity, consistency and work ethic, handed down from what Steve called “an amazing example” set by previous Sangiacomo generations. The business also cultivates “a trust element” with its winery partners that also began with past family members, “who built our business on integrity and fairness,” Steve said.

The brothers maintain confidence that demand for good quality wine will continue to grow, even as certain consumer demand categories trend downward.

This sign welcomes visitors to the Sangiacomo headquarters, located in the Carneros AVA near Sonoma (photo by C. Merlo.)

“I’m optimistic,” Steve said. “Consumers want authenticity. They want to know where their food comes from. We believe if you take care of the land, it will take care of you.”

Looking ahead, the Sangiacomos will continue to grow their vineyard brand and their own wine brand simultaneously. They plan to remain in farming and to successfully transition the next generation into the family business. And they want to continue learning even more about winegrapes and making wine. They’re eyeing their grandfather’s homeland, where grapes and wine have gone hand in hand for more than 4,000 years.

“It’s on our list to go back to Italy, not as a vacation, but like a business reconnaissance mission, to learn more about winegrape growing from them,” Mike said. “It’s long overdue.”

A recent offering during a tasting at the family’s Home Ranch Terrace (photo by C. Merlo.)

Eye in the Sky

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This King Air B200 aircraft flew over California vineyards imaging them with an AVIRIS instrument from NASA’s Jet Propulsion Laboratory (photo courtesy K. Gold.)

A group of researchers have tapped NASA Jet Propulsion Laboratory’s hyperspectral imaging equipment and machine learning expertise to see if they can detect virus-infected grapevines before they exhibit visible symptoms. Although similar technology has been used to identify bacterial and fungal infections in asymptomatic plants and trees, it had not been used to detect viruses in asymptomatic vines until now, said Katie Gold, an assistant professor of grape plant pathology with Cornell University’s AgriTech in Geneva, N.Y. She is leading a Cornell research group collaborating with the Jet Propulsion Lab.

The theory is that by identifying asymptomatic grapevines infected with grapevine leafroll-associated virus complex 3, growers would be able to remove them earlier in the disease cycle.

GLRaV-3 has a latent period of about 12 months, and often times more, depending on the variety, where vines are infected but don’t express symptoms. The longer infected vines remain in a vineyard, the greater the potential for them to spread GLRaV-3 to nearby plants.

Based on two years of work with 300 acres of grapevines in the Lodi production area, Gold said they were able to identify asymptomatic red varieties with 87% accuracy. Although she said they were “very pleased” with the results, she also pointed out it wasn’t perfect.
For example, the machine learning model at times misidentified vines affected by the drought or other abiotic stressors mostly along vineyard edges.

“What we will work on is maintaining accuracy but reducing misclassification,” Gold said. “This is the low-hanging fruit, and we know we can improve our methods because we can improve our corrections.”

She also said she doesn’t see remote sensing technology replacing the need for PCAs and crop scouting but instead helping them be more efficient.

A drone captured a grateful message written among grapevines by collaborators in the hyperspectral imaging research in the Lodi region (photo by Aaron Lange, courtesy Lodi Winegrape Commission.)

A Promising Tool
Charlie Starr IV, a Lodi-area PCA who was part of the research project, said while hyperspectral imaging holds promise, it still has several unanswered questions.

He has been working with a vineyard client for several years to try to reduce the number of GLRaV-3-infected vines in a young vineyard by rouging. Unlike some areas of the state where grapevine red blotch disease is the predominant virus, Starr said GLRaV-3 is the leading one in the Lodi area.

Mealybug, which are endemic to the region, are the main GLRaV-3 vectors. Since it would be nearly impossible to try to eradicate mealybugs, he said they are focusing on eliminating infected vines.

“We know we can’t eliminate the vector, so that only leaves one other option: Try to get rid of the virus,” Starr said.

But that doesn’t mean they ignore mealybug. He and his client have taken an integrated approach that uses insecticides as well as mating disruption to bring pest numbers down as low as possible.

“It’s correct that we know we will not eradicate the mealybug. However, if we let the populations build, we’re only allowing more bugs to vector the virus quicker,” Starr said. That’s where he said a neighborhood mealybug effort that enlists nearby growers is important since the pest can move and be transported between vineyards.

Image A (left) shows the full extent of the AVIRIS-NG flights in 2020 over vineyards. Image B (right) zooms in on the the flight lines that collected hyperspectral imaging over Lodi-area vineyards (photo courtesy NASA/Cornell).

Depending on the season and other environmental factors, GLRaV-3-infected red varieties near harvest typically express visual symptoms compared with white varieties, which usually don’t.

Over the years, the client’s scouting crew has become skilled at identifying red varieties infected with the virus. But white varieties typically go unscouted because of a lack of visual symptoms.

“If we can refine [the technology] to where we can actually identify viruses in white and in red varieties, but more importantly in white varieties, that will be a game changer for us to get an upper hand on viruses,” Starr said.

He and his vineyard client’s efforts took on new urgency with the advent of sudden vine collapse several years ago.

UC researchers conducted PCR testing of affected vines to try to solve the mystery in 2019 at the request of the Lodi Winegrape Commission. They identified co-infections of leafroll virus and grape vitiviruses and believed the combination was responsible for what has been dubbed “sudden vine collapse.”

Certain rootstocks like Freedom also appear more sensitive. And like leafroll virus, grape vitiviruses can be vectored by mealybugs and scale insects.

Plant pathologist Katie Gold, an assistant professor at Cornell University, inspects diseased grapes in a field. Gold’s team used a JPL-developed instrument to detect infected crops from the air in one of California’s most important winegrape-producing regions (photo by Allison Usavage.)

Remote Sensing 101
At the basic level, remote sensing involves measuring how much light, or electromagnetic radiation, an object or area reflects or absorbs. This is known as its spectral signature.
The electromagnetic spectrum includes all the kinds of light, both visible to the human eye and the larger portion that is not visible.

Our eyes can only see the visible portion (red, green and blue). Healthy vegetation typically appears green because it absorbs more blue and red light and reflects more green.

But vegetation reflects even more light in specific near-infrared channels. As a result, many growers and consultants have begun flying off-the-shelf drones equipped with near-infrared sensors to measure light reflectance and plant health. By imaging an area and creating a map, they can identify stressors including diseases symptoms that may not be visible just by walking a crop.

Gold and her group have taken that concept to an entirely new level and are using hyperspectral imaging to assess grapevine health. Any digital image, whether viewed on a cellphone or high-powered computer, is made up of pixels, the smallest unit in a digital display.

Instead of assigning just red, green or blue to each pixel, hyperspectral imaging analyzes a wide spectrum of light. It also breaks down the light striking each pixel into several different spectral bands, providing significantly more information about what was imaged.
Specifically, Gold and her group are using NASA’s Airborne Visible and Infrared Imaging Spectrometer Next Generation, or AVIRIS-NG.

Driving their work is the assumption that diseases affect plant chemistry and physiology, and this would change molecular composition. That in turn may change how cells react to light waves.

Imaging Vineyards by Plane
The imaging was done with a specially equipped twin-engine plane flying about 1,000 meters or about 3,280 feet above the vineyard floor. About 11,000 acres total were captured in 2020 and 2021 just before harvest when disease symptoms are the most pronounced. But collecting the images was just part of the project.

In the Lodi area, the Cornell researchers collaborated with Stephanie Bolton of the Lodi Winegrape Commission, its grower members and local PCAs including Starr.

Shortly after the 2020 flight, specially trained scouts scoured 300 acres of the vineyards to visually identify symptomatic vines.

They also collected samples from 100 vines in 2020 for GLRaV-3 laboratory testing to verify diseased and non-diseased vines. Testing the entire vineyard would be too labor-intensive and expensive since each lab test typically costs between $40 and $100 each.

All the samples the scouts identified as diseased tested positive, and those identified as non-diseased tested negative.

The diseased vines were removed that winter, and the vineyards were again scouted just before harvest in 2021 and sampled from 10 vines.

As a result of the latent period, the researchers went back to the 2020 images and geotagged those vines that were symptomatic in 2021 as asymptomatic in 2020.

Researchers turned to machine learning to differentiate slight nuances in each of millions of pixels that make up the image. The computer program “learns” the spectral signature of uninfected, asymptomatic and symptomatic vines.

By rerunning the 2020 images that were geotagged as asymptomatic vines, they “taught” the computer model how to identify vines with early infections using spectral signatures. And each time data was run through the computer model, the accuracy of the results improved.

The best performing models had 87% accuracy differentiating between noninfected and asymptomatic vines, suggesting the importance of nonvisible wavelengths in detecting disease-inducted changes to plant physiology.

A Few Caveats
Calling the Lodi research a case study, Gold said they also want to test the hyperspectral imaging on varieties other than cabernet sauvignon, which was used in their subset. That’s because white varieties like chardonnay exhibit few symptoms when infected with GLRaV-3. In addition, some hybrids have better tolerances to higher viral loads, which could affect their biological responses.

Geography along with soil type, cultural practices and climate likely play a role in remote sensing applications too. This research was conducted only in the Northern San Joaquin Valley, but Gold said she’d like to expand it to other production regions within the state as well as elsewhere in the United States.

Based on what she’s seen so far, Gold said the technology also has the potential to be used to diagnose other viral diseases in asymptomatic vines, although they’re not there yet.
She said the results lay a foundation for using NASA’s upcoming hyperspectral satellite mission, dubbed Surface Biology and Geology, to monitor regional diseases of grapevines and other crops.

The End of Open Ag Burning in the Central Valley and the State

Under SB 703 (Florez) Chapter 481, Statutes of 2003, open burning for agricultural crops is phased out under a prescribed schedule. This schedule will result in the near-complete prohibition of agricultural open burning in the Central Valley beginning Jan. 1, 2025 (all photos courtesy Fowler Brothers Farming.)

In the next two years, California’s Central Valley will experience a transformational change in agriculture: the end of open agricultural burning. It is likely that other regional air districts around the state will adopt a similar prohibition of open agricultural burning in the years to follow.

Under SB 703 (Florez) Chapter 481, Statutes of 2003, open burning for agricultural crops is phased out under a prescribed schedule. This schedule will result in the near-complete prohibition of agricultural open burning in the Central Valley beginning Jan. 1, 2025.
In preparing for this, the California Association of Winegrape Growers (CAWG) worked with other agricultural industry associations in 2021 and successfully advocated in the State Legislature for nearly $180 million in funding for the San Joaquin Valley Air Pollution Control District. This one-time influx of money in part provides funding for the District’s Alternatives to Agricultural Open Burning Incentive Program. This stipend program is intended to help growers pay the high costs of alternatives to open agricultural burns during the phaseout.

For decades, the disposal of old orchards and vineyards has commonly involved burning. For vineyards, the materials used in trellising, such as end posts, t-posts and wire have created unique challenges in how to dispose of vines when removed. That is why up and down the Central Valley, you may see piles of pulled vineyards left sitting waiting to be disposed of.

In 2003, opponents to SB 703 warned of the very situation in which we now find ourselves. The analysis by the Assembly Committee on Natural Resources, dated June 30, 2003, stated, the following:

“Bill opponents state that while the agricultural community is willing to pursue means to reduce or eliminate burning when feasible, it is important that alternatives to burning be established BEFORE the prohibition is enacted.”

Unfortunately, that advice was not heeded.

CAWG will be advocating in the legislature in 2024 to obtain additional funding to develop viable alternatives, like the air curtain burner pictured here, for disposing of vineyards.

Alternatives
To address this situation, CAWG will be advocating in the legislature in 2024 to obtain additional funding to develop viable alternatives for disposing of vineyards. However, this will be difficult as almost every alternative comes with unique challenges. The alternatives and associated challenges are outlined as follows:

Chipping and Mulching: This alternative involves the grower to either hire a company to chip or mulch the piles of vines on-site or ship those piles to a facility equipped for chipping and mulching.

There are three specific challenges with this alternative:
Economics. Most of the machines used to chip, mulch or grind vines don’t work well with metals. This means all metal would need to be removed first, which can be a very costly endeavor. Additionally, if the vines are being shipped to a facility, shipping costs can also be expensive.

Disease. When old vines are removed due to disease, chipping and mulching is not a viable option as this would potentially result in putting disease back into the soil or spreading the disease to nearby vineyards. The federal Tree Assistance Program (TAP) provides financial assistance to eligible growers to replant. A condition of the TAP program is the diseased vine cannot be reincorporated into the soil and best practices prioritize burning.

Market Demand. Increased forest management (preventing fires) and the recent prohibition of putting food and other organic waste into landfills has resulted in a substantial increase in the supply of compost, mulch, wood chips and other similar groundcover. This means if a grower decides to dispose of old vines through chipping and mulching, no one may be waiting to buy that material. So, what is the grower to do with that material? While there is a beneficial use of this material in a new vineyard, there is only so much a grower can use.

Air Curtain Burners, also called FireBoxes: These act as an air pollution control device by reducing the particulate matter, smoke or black carbon created by burning wood waste. This alternative to traditional open burning mitigates the amount of smoke released from open agricultural burning. This also creates a valuable byproduct that can be tilled into the soil. The downside is that while some growers can afford this equipment, most cannot. Additionally, there is limited availability of these burners.

Low-Smoke Ag Burning: This is an important option (for 2024 only) in dealing with vineyard management waste. Low-smoke agricultural burning, when using best practices, takes into consideration concerns of public health as well as climate change. The challenge here is how long a grower needs to wait for approval of a burn day. Depending on several meteorological factors and how many people want to burn in that area, a grower with a permit to burn could wait for several months to get approval, and that grower is not guaranteed to be able to burn their full permitted amount in one day.

Biochar: This is one of the smartest alternatives that also offers incredible benefits. One ton of biochar is equivalent to three tons of CO2 sequestered. By turning old vineyards into biochar, carbon remains trapped in its solid form, thus creating a carbon-negative cycle. However, few Pyrolysers (an oven that creates biochar through pyrolysis) exist in the Central Valley. Additionally, there are economic challenges in shipping.

Biomass: Vines can be used as alternative fuels within energy conversion chains, driving renewable energy exploration as an alternative to traditional agricultural biomass burning. The ability to convert grapevine biomass residues into energy is potentially a valuable alternative to explore in the future. However, there would need to be an expansion of markets and availability. Unfortunately, policymakers in Sacramento currently do not see biomass as an effective tool in fighting climate change and protecting clean air.

CAWG has created a hotline for its members who find they have reached a dead end in getting approval to burn. It is recommended that CAWG members diligently go through the steps provided on cawg.org’s Ag Burn Hotline Webpage (under the Resource Tab) before completing the form for CAWG’s assistance.

Fire Insurance a Moving Target

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Some owners of vineyards and wineries in high-fire-risk areas are finding it difficult to keep themselves on fire insurance plans as providers continue to pull out and prices increase.

Driving up Soda Canyon Road on Napa’s east side, the neighborhood under the Vaca mountains looks different these days. Gone are many of the old wood frame houses, replaced today with new, boxy homes built of fire-resistant materials.

The October 2017 Atlas Fire was the big changemaker. The fire destroyed 781 buildings and over 51,057 acres of vegetation.

Chris Vandendriessche remembers what life was like before the fire when his family’s winery, White Rock Vineyards, had just one insurer. In 2017, the family lost all the structures on their property, including the 1870’s stone winery that had been converted into a family home for his parents (who founded the family winery), the modern winery a few hundred yards away and the small tasting room adjacent to it.

With money from their insurance claims from Travelers Insurance, the stone house innards were built anew, preserving the stone structure on the building’s outer shell. The winery caves were restored.

But today, Travelers no longer provides their coverage.

“Before the fire, we could have one carrier that insured the entire property, liability, equipment, all the houses, caves, the entire thing was at one company,” said Vandendriessche. “After the fire, nobody wanted to take on that much risk because that meant you were exposed to all the potential damages in a fire. And since then, we’ve had to take eight or nine companies, each one taking a little tranche of the insurance needs of our business.”

But each year, the family still must seek new coverage and new insurers.

“Every year since the fire, two or three of those companies have backed out, and we have to find new ones. The prices have tripled for less coverage. So, that’s our insurance picture.”

The Vandendriessche’s insurance agent, Jim Stetson, Agency co-owner of Leavitt United Insurance Services, deals with properties all over the state. He says the rising rates are highly localized and that insurance rates for vineyard and winery owners in other parts of the state have not been affected by the wildfires.

“For somebody with little to no wildfire exposure, we can still get basically the same kinds of programs that we had in the past,” he said. “It depends on the wildfire risk, the property values and loss control, and brush mitigation. If you’re in American Canyon or Lodi or Sacramento or somewhere like that, the wildfire concern isn’t going to be really an issue. But in a lot of the other areas, you are going to be exposed to that.”

Wine Warehouse Insurance Affected
It also depends on where wine is stored, Stetson said.
“Aggregation can be an issue; that’s where carriers only want to have a certain amount of limit in one area so that if there’s some kind of catastrophic wildfire event, they’re not losing it all in one event. So, they don’t want to have too much value, say over $100 million, in one five-mile area.

“We see that at the wine warehouses in American Canyon right now, where there’s aggregation issues with certain carriers where they have too many clients storing wine or producing wine in one location.”

Insurance Tied to Bank Loans 
The insurance issue is complicated because it isn’t just about insurance. Insurance is linked to winery finance since banks require insurance to lend money.

“2017 brought increased awareness of the problem, and that’s when the insurance industry started pulling out,” said Michael Miiller, director of government relations at the California Association of Winegrape Growers (CAWG).

“Basically, where our growers are is they have a property that has a structure on it. And if they have any kind of line of credit already lending at all, they have to have proof of insurance as a condition of that lending, which means they have to have insurance.”
“We’re in a crisis situation,” he said.

Mixed Reviews for the FAIR Plan
The state of California has stepped in to create the insurer of last resort: the FAIR Plan. FAIR Plan’s policy numbers more than doubled between 2018 and 2022 from 127,000 to 272,000 (including homeowners as well as businesses.)

“Right now, it’s the only option available to people, to many, many people,” said Miiller. “And when your safety net is all you have, that’s not sufficient. They have a limit to how much they can cover.”

In March 2023, the California Department of Insurance announced it would up FAIR Plan caps for commercial businesses coverage amounts “from $8.4 million to $20 million per location, and under its Division II Business Owners Program, from $7.2 million to $20 million per location,” according to a department press release.

Stetson explained that the FAIR Plan is not a state run program but is run by the insurance companies themselves. “A lot of people think it is [state-run], but it’s a pool of all the admitted carriers doing business in California.”

That means each new change requires negotiations between the department and the FAIR Plan.

Reducing on-property fire risks may improve coverage options in the eye of the insurer, but there is no guarantee of return on investment.

By summer 2023, the department had still not implemented the increases announced in March and said in an email to Grape & Wine the higher limits would most likely be available by end of 2023. That leaves many businesses exposed again during the 2023 vintage.

“The FAIR Plan does not cover things like faster water damage or falling objects, freezing pipes,” said Stetson, “so there’s some gaps there.”

He said commercial insurers are starting to fill in some of the gaps. “That’s starting to come back online and provide a little bit of relief.”

Miiller pointed out that even when the $20 million limit is implemented, the amount is per policy, not per structure. “It would be better if it were per structure,” he said.

The CAWG official criticized the state’s insurance regulators for being slow to act.
“We’re looking at how they set rates, we’re looking at the expediency of rate approvals and those kinds of things. There’s a lot that can be done at the Department of Insurance to speed things up. And they’re just not doing it. When you look at when Lara expanded the FAIR Plan, it took them forever to approve their rates.”

“When there’s no product on the market, growers have no options,” he said.

Still, despite wildfires in Oregon, the situation is quite different there, Miiller said.

“You can find growers in Oregon who aren’t having near the problems that they’re having in California. Their regulatory system is entirely different.” That’s because Oregon does not set commercial insurance rates.

The Crisis Continues… for Some
Miiller warned that the crisis, however unevenly distributed it is, is far from over.
“If we don’t start looking at this like the emergency situation that it is, we are quickly going to see a bunch of industries that are going to pay some serious consequences because they can’t buy insurance. Insurance isn’t an option. You have to have it to be in business. If it is not available, the dominoes start falling.”

“So, from my perspective, I think there really needs to be somebody to step up and say, ‘Hey, we have an emergency. And I’m going to implement these emergency actions to start to address this problem.’”

Yet, when it comes to insurance, some areas of the state are stable, said Stetson. “For folks in the Central Valley, if there’s no wildfire risk, the options are pretty much what they were [before 2017]. If there’s wildfire risk, then we have to start getting more creative.
“If there’s no wildfire risk, that’s the carrier’s main concern. We have seen a little bit of a rate increase, but there’s still a lot of carriers playing in the space.”

Reducing Risk
What can property owners do to reduce risk in the eyes of insurers?

“It’s a moving target,” Stetson said. “Defensible space is always the first thing that people do, cutting back brush, removing low hanging branches and getting ladder fuels off the property or away from the buildings. That’s definitely helpful.

“Some people have contracted private firefighting companies to consult. Some will spray fire retardant seasonally around the production buildings, and then they sometimes have them on a retainer to come in…so if there’s a wildfire event, they will help defend the property.”

Sprinklers make sense, he said, but there’s no guarantee installing them will bring a return on the investment. “Unfortunately, it’s difficult to ask somebody to spend that much money because it’s not necessarily a guarantee of an offer of coverage. The insurance companies can make somebody put in a six-figure sprinkler system, and then that same carrier that asked him to do that next year could pivot,” he said.

“A lot of people in the brushy areas are stuck in the process,” he added.

Another limitation of the FAIR Plan: It doesn’t cover wine in tanks. “Anything not bottled yet is excluded from coverage,” said Stetson. “So that’s a pretty big issue for people because typically, once it’s case goods, they can move it to a third-party storage location and find palatable, affordable coverage from an admitted carrier.”

According to the California Department of Insurance, counties where 25% or more homes are in high fire risk, these are the top-ranked counties, by highest exposure first: Tuolumne, Trinity, Nevada, Mariposa, Plumas, Alpine, Calaveras, Sierra, Amador, El Dorado, Mono, Lake, Mendocino, Siskiyou, Butte, Lassen, Shasta, Tehama, Santa Cruz, Humboldt, Napa, Del Norte, Modoc, and Placer.