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Our mission at Corison Winery is to produce world-class Cabernet Sauvignon with integrity. One of our founding principles is to minimize negative impacts on the environment. We’re all in this together.
Kronos and Sunbasket Vineyards are certified organic by CCOF. Compost and cover crops promote flourishing soils which, in turn, nourish the vines. Sheep mow the cover crop in early spring, and their nutrient-rich droppings feed the vines and the microbial life in the soil. We till to manage weeds with our electric tractors.
Nesting boxes abound in the vineyards to encourage hungry birds to take up residence. Bluebirds and swallows consume harmful insects, including leafhoppers and mealybugs, and Barn Owls hunt four-legged varmints. We do not use any synthetic pesticides or herbicides.
With water being one of our biggest challenges in California, we encourage our mature vines to send roots deep into the soil to dry-farm when we can. Kronos Vineyard grows on St. George rootstock, which is known for its drought resistance. State-of-the-art water stress sensors and drip-irrigation help us optimize this precious resource when the vines do need water.
Mindful of our carbon footprint, solar panels on the winery roof produce all of our electricity. Cathy commutes to the winery and makes her vineyard rounds gasoline- and emissions-free by bicycle or electric car, and the winery offers charging stations for visitors. In addition to our electric tractors in the vineyard, we use an electric forklift at the winery.
William built passive night-cooling into the design of the winery with the cool night air drawn in through louvers on the ground floor and warm air vented to the outside through classic cupolas on the roof.
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Cathy Corison | Winemaker, Founding Partner
Cathy’s winemaking journey began nearly 50 years ago when she took a wine appreciation course at Pomona College on a complete whim. She fell in love with wine for all the usual reasons, but, as a Biology major, was also taken by the fact that wine is the result of a fascinating collaboration among a series of living systems. Two years later she graduated, and two days after that, arrived in the Napa Valley, bent on making wine. A master’s degree in Enology at UC Davis followed, and then a harvest internship at Freemark Abbey in 1978. Winemaking positions included Yverdon in 1979-1980 and then Chappellet Vineyard for the 1980’s. In 1987, toward the end of her tenure at Chappellet, there was a wine inside her that needed to get out and she began to buy grapes and barrels (instead of cars and houses). Using other wineries’ excess capacity while continuing to moonlight at Staglin, York Creek and Long Meadow Ranch, Corison Winery was born.
William Martin | Partner
William grew up in upstate New York working at his grandfather’s lumberyard and, using both sides of his brain, majored in Art & Physics at Middlebury College in Vermont. After several years in Boston working for an architect and cultivating his passion for food and wine, he met Cathy in 1990. They married two years later and William moved to the Napa Valley, just in time to help with the 1992 harvest. He soon brought Corison Winery into the digital age with its first computer, and remains the IT and Accounting departments to this day. A man with a long view, he searched for a vineyard and winery site and then orchestrated the purchase of Kronos Vineyard in 1995. He designed the winery barn and orchestrated the building of our winemaking home, breaking ground in 1999.
Thanks to the @naparegister for publishing this Climate Connection contribution from @napagreen’s Vineyard Program Director, Ben Mackie (@soilrainandhope) highlighting the biodiversity @grgichhillsestate.
If you loved this article, you’ll love our Birds, Bees & Butterflies: Biodiversity in the Vineyard workshop happening today!
#climateaction #regenerativeag #regenerativeviticulture
Friday night dinner dilemma?
Order takeout from @southsidenapa using promo code DONATE and 20% of your order will be donated to @napagreen.
It’s a win: win! You get dinner and @napagreen gets funding to contribute our impactful climate action work in Napa Valley.
Order online or preorder your Fried Chicken Friday pickup for February 27, 2026. Don’t forget to pair it with Napa Green certified wine! 🍽️ 🍷
#dineanddonate #nonprofit #napavalley
Join us Thursday, February 26 to learn about biodiversity in the vineyard.
🍇 Ivo Jeramaz, Winemaker & VP of Vineyards and Production at @grgichhillsestate, will welcome us to the beautiful property and illustrate the various implementation of habitat diversity they have undertaken at the American Canyon ranch.
🍇 Jo Ann Baumgartner & Sam Earnshaw from @wildfarmalliance will provide insight on how to maximize bird habitat and establish hedgerows to support the local ecology.
🍇 Erin Arnsteen from the @monarchjointventure will outline how pivotal vineyard acreage can be to support the dwindling Western Monarch populations.
🍇 Cori Carlson, owner of @napapastureprotein, will explain the ecological goals of grazing a vineyard.
🍇 Ruby Stahel from the @naparcd will join us to discuss the various resources that the RCD has to support habitat enhancement on Napa properties.
🍇 @soilrainandhope from @napagreen will talk about bees!
➡️ Ticket link in bio.
#biodiversity #regenerativeag #regenerativeviticulture
Learn about the herd of cattle calmly grazing the vineyards @ruddestate, contributing to soil health and biodiversity, in our latest post from @soilrainandhope.
➡️ Link in bio.
#climateaction #regenerativeag #regnerativeviticulture #soilhealth
Thanks to @naparegister and @kcuz for this great article about the @regenerativeviticulture and @napagreen #OneBlockChallenge field day @celaniwines.
We had a great time engaging with attendees about opportunities to implement regenerative practices in their vineyards!
If you’re regenerative curious or want to learn more head to the link in our bio!
#climateaction #regenerativeviticulture
Congratulations on @napagreen Vineyard Certification to @shadybrookestatewinery!
Nestled in the picturesque heart of Coombsville, Shadybrook Estate, has shown a deep commitment to regenerative viticulture and climate action. Visit to see the natural beauty of this hidden gem.
#climateaction #regenerativeviticulture #napagreen
We love the biodiversity in this @grgichhillsestate American Canyon Vineyard!
Come learn how to integrate biodiversity in your vineyard on February 26 at this workshop with @napagreen, @grgichhillsestate, @wildfarmalliance, @monarchjointventure, @napapastureprotein and @naparcd.
➡️ Ticket link in bio.
#Biodiversity #RegenerativeAg #RegenerativeViticulture
Congratulations to @rutherfordhillwinery on achieving @napagreen Winery Recertification!
At Rutherford Hill Winery, sustainability is apparent in all of their practices. The facility is 100% solar-powered and even contributes clean energy back to the local grid. Additionally, they prioritize natural solutions, like Owl Boxes and organic farming.
Visit to experience for yourself these exceptional wines that invest in our planet’s future.
#climateaction #winetasting #sustainablewine
Biodiversity is essential for any resilient vineyard.
Join us on February 26, 2026 at @grgichhills American Canyon to learn how to integrate biodiversity within vineyard blocks.
Experts from @wildfarmalliance @monarchjointventure @napapastureprotein and @naparcd will be on hand to discuss all the various species that a vineyard can support.
Ticket link in bio.
#biodiversity #regenerativeag #regenerativeviticulture
Learn how @closduval used Verallia lightweight glass to help reduce their environmental impact and meet their sustainability goals.
Read more at napagreen.org
#climateaction #lightenup
What a great #OneBlockChallenge first field day!
Not only was it a gorgeous day with a great community of people we also heard from some awesome speakers:
🍇 @cainethompson about the @regenerativeviticulture foundation and the implementation practices
🍇 Jordan Lonberg @coastalvineyardcare about continuous improvement and shifting the industry mindset
🍇 @soilrainandhope about the practical aspects of the regeneratives practices and how @napagreen and @naparcd can provide support
🍇 Dustin Owen @celaniwines about their their vineyard’s regenerative journey
Thanks to all who attended and to @celaniwines for hosting!
➡️ To learn more about regenerative vineyard practices or to enroll in either the One Block Challenge or Napa Green Vineyard certification, head to the links in our bio.
#regenerativeag #climateaction
Join our first @napagreen and @regenerativeviticulture One Block Challenge Field Day to hear from this great lineup of speakers, meet other participating growers, and learn how to take the first steps in implementing regenerative practices.
We look forward to seeing you on February 12, 2026 at @celaniwines to connect learn more.
Registration link in bio.
#regenerativeag #regenerativeviticulture #soilhealth
It’s hard to believe it’s already been 3 years since @marisataylorwines joined our team, but time flies when you’re having fun (and wine)!
Join us in celebrating Marisa Taylor, who is an accomplished winemaker and sustainability leader with over two decades of experience in the wine industry, and also the Napa Green Winery Program Manager, where she partners with wineries across Napa Valley to advance meaningful environmental stewardship and sustainable winegrowing practices.
Thank you for bringing your passion and positive energy to our team every day!
The team celebrated with our @napagreen certified #NapaNeighbors @rombauervineyards.
#winebusiness #womeninwine #sustainablewine
Join us for the @napagreen and @regenerativeviticulture #OneBlockChallenge first field day on February 12, 2026 from 10-12 @celaniwines.
This event is open to all winegrowers and vintners who are curious about regenerative viticulture but space is limited so register today at the link in our bio.
#soilhealth #regenerativeviticulture
Congratulations to @domainecarneros for receiving the @napachamberofcommerce Sustainable Business of the Year award presented by @mcecleanenergy.
Thank you for your leadership, innovation and dedication to sustainability and the community!
#greenbusiness #winebusiness #napagreencertified #napagreen
@antinorinapavalley family’s winemaking legacy spans over six centuries. To ensure that legacy continues, they have a deep commitment to sustainability and the care of the land for future generations.
Hear why Antinori is exploring the use of @hopenvironmental1965 soil compostable tie tape in the vineyard.
#regenerativevineyard #greenbusiness #sustainablewinery #greenpurchasing #landstewardship
