CALISTOGA — Grazing sheep are becoming a more common sight in Napa Valley vineyards — and advocates say there are good reasons for that.
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Jesse Duarte | Napa Valley Register
CALISTOGA — Grazing sheep are becoming a more common sight in Napa Valley vineyards — and advocates say there are good reasons for that.
The Napa Valley Grapegrowers and Napa Green organized a field day on Tuesday at Castello di Amorosa outside Calistoga to show growers and vineyard managers how sheep produce healthier vineyard soil and more fire-resilient wildlands.
Christian Cain of Perennial Grazing said there are four reasons to let sheep graze in vineyards: soil fertility, labor savings, frost mitigation and cost reduction.
Sheep are also making practical sense as more growers go organic and eliminate pesticides.
“And we hope to do more,” Mochizuki said.
Chris Maschauer, who oversees those grazing programs, explained the science. As sheep graze on cover crops, they excrete “time-releasing fertilizer capsules.” That fertilizer feeds microbes, the microbes feed the soil, and the soil feeds the vines.
“You can cut your costs in half while increasing your tonnage,” Maschauersaid.
The trick is not to overgraze, he said. If the sheep eat the grass down to within a few inches of the ground, the grass will start to regrow, drawing nutrients from the soil that would otherwise nourish the vines. The absence of a cover crop exposes the soil to ultraviolet light, which kills the same microbes that grazing is supposed to support, and can contribute to mildew.
Sheep need to graze year-round but need to be used strategically in the vineyards, so it’s tough for growers to keep their own sheep for grazing purposes. That’s why businesses like Cain’s and Irwin’s are booming. Irwin said his sheep are busy enough that he never solicits new clients — they come to him.
Advocates say grazing promotes a balanced, dynamic ecosystem to support vineyards.
“Embracing these biological systems brings so many benefits,” Cain said.
About Napa Green: The Napa Green 501c3 is a global leader in sustainable winegrowing, setting the highest bar for sustainability and climate action in the wine industry. Napa Green facilitates whole system soil to bottle certification for wineries and vineyards, and provides the expertise, boots-on-the-ground support, and resources to continually improve. Learn more at https://napagreen.org/participating-members/.
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Join Sommelier and Vintner, Meghan Vergara as she visits three @napagreen certified wineries, @chimneyrockwinery, @bcellars and @boeschenvineyards in this captivating Terroir of Place and People Itinerary.
“Sustainability is a beautiful way of life and business. These whole systems, regenerative practices are as essential and unique as the terroir we pride ourselves on here in Napa Valley… it’s truly inspiring to travel to different wineries and taste the fruits of their labor, to see all the hard work and distinct passion in what these wineries & vineyards do.” - @mvino1
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The @napagreen Winery program launched in 2008, prompting Yvon Chouinard, founder of Patagonia, who spoke at the launch event hosted by @napavintners, to observe, “I’ve been at this for 30 years and this is the best, most well-thought-out program I’ve ever seen.”
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Announcing two unprecedented “Fine and Rare Wines” donations to @christieswine will benefit @napagreen, the region’s leading sustainability and climate action nonprofit.
This incredible auction includes:
🍇 A remarkable 40-Bottle Vertical of @spottswoodewinery Cabernet Sauvignon donated by the @spottswoode_ceo family plus an invitation to attend Spottswoode’s Annual Vertical Tasting
🍇 A unique 19-Magnum Vertical of @opusonewinery Vintages 2001-2019 donated and signed by @opus_one_winemaker plus an Opus One Harvest Experience for four
The auction opens September 4 and runs through September 18.
We are so grateful to these two champion members for this incredibly generous donation.
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This harvest, we’re celebrating 21 years of @napagreen, and the community leaders who have pioneered sustainability and climate action with us from the beginning.
The @napavintners (NVV) launched the Napa Green Winery program in 2008, and Patagonia founder Yvon Chouinard joined as a keynote speaker, saying, “I’ve been at this for 30 years and this is the best, most well-thought-out program I’ve ever seen.“
Let’s raise a glass to the founding members certified as Climate Smart Napa Green Wineries, continuing to lead the industry.
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The regional Napa Valley delegation for the Great Wine Capitals is now accepting nominations for the 2026 Best of Wine Tourism Regional Awards.
Don’t forget to submit your @napagreen certified winery for the Best of Sustainable Wine Tourism Practices!
Submission Deadline: September 1, 2025
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Did you know that Napa Green is 21 years old? We want to celebrate and thank the community leaders who joined in from the beginning, and who have continued along the path of sustainability and climate action.
The @napavintners (NVV) stewarded @napagreen for its first fifteen years, and it is thanks to their vision and the leadership of these key founding members that Napa Green is still here to support growers and vintners in being the change in our community and industry.
Timeline: Napa Green Land was established in 2004. Napa Green Winery was established in 2008. The Land program ended in 2021, replaced by the new regenerative Napa Green Vineyard program.
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That’s a wrap on Cheers to Climate Smart Wines, but you can continue to visit our amazing participating wineries to taste their delicious climate smart wines!
@spottswoodewinery
@mummsparkling
@phiferpavittwine
@domainecarneros
@etudewines
@chimneyrockwinery
@mvinowines
@pineridgewine
@chandonusa
@rutherfordhillwinery
@cliffamily
@tressabores
@beringervyds
@vsattui
@frankfamilyvineyards
@seaveyvineyard
Want more climate smart wines? Visit our website for a complete list of certified members and follow along for more itineraries.
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🍷 Our last itinerary for Cheers to Climate Smart Wines and it’s a good one! Thank you @frankfamilyvineyards, @aubergedusoleil & @seaveyvineyard!
Follow this itinerary for a stunning day in Napa!
Book your tastings at @napagreen certified @chimneyrockwinery @etudewines and @domainecarneros and stay at the luxurious @carnerosresort for a day that will delight all of your senses!
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If you missed last night’s amazing climate smart wine tasting @klwines you can join us tonight Thursday, July 24 for another great lineup of @napagreen certified wineries @dominusestatewinery @chimneyrockwinery @domainecarneros and @beringervyds
You won’t want to miss this! Ticket link in bio.
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📍Phifer Pavitt Wines in Calistoga!
A gorgeous family winery & vineyard that goes above and beyond in climate smart practices and quality of wine! 🍷
Can’t make it to Napa? Experience climate smart wines @klwines in downtown San Fransisco.
Join us Wednesday, July 23, 2025 to taste wines from @napagreen certified members @spottswoodewinery @pineridgewine @etudewines and @frankfamilyvineyards
You won’t want to miss this! Ticket link in bio.
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Come join us this week at @klwines!! Tickets can be found at the link in our bio. Cheers! 🍷
😍 This one is a gem! Book your tastings at Napa Green Certifed @mummsparkling & @spottswoodewinery and enjoy a stay at the incredible @solageauberge!
Sustainability & Luxury truly make a great pairing. Cheers to Climate Smart Wines! 🍷
🎙️: @mvino1
⚠️ Don’t sleep on this one! Get your $15 tickets to taste INCREDIBLE wines from @spottswoodewinery, @dominusestatewinery, @chimneyrockwinery and many more at @klwines in San Francisco on July 23rd & 24th!
You know where to go ➡️ link in bio or www.napagreen.org. See you there! 🍷
