herbicide-free case studies

- CASE STUDY V -

ESTATE VALLEY FLOOR

Vineyard area:

44 acres

Site Characteristics:

Rolling hills. A few rocky areas. Some side-slope where it’s too narrow for a tractor.

Tools/Equipment used:

Handheld gas-powered weed wackers used just after weeds germinate
Gramegna tractor-mounted in-row tiller. Challenges: Slow & one-sided
Shovel
Piloting a few weed-trimmer attachments

Passes:

1 - 2 passes depending on growing season conditions

Organic Herbicides?

Tried but were expensive, ineffective, and felt their use was moving away from why we’re organic in the first place.

GRAZING?

Hire sheep before bud break (Kaos)

Tillage?

Currently, some blocks are no-till and some alternate till. Goal to be entirely no-till. Even in a dry year we didn’t see a drop in yield in no-till blocks.

Weeds of concern?

Some of the very aromatic we don’t want in the fruiting zone (e.g., hit Mare’s Tail with a targeted shovel pass). Johnson grass - tall, vigorous and deep-rooted - do worry about competition.

Aesthetics?

Fair tolerance for weeds in the vineyard. Mostly dead or dormant for core vineyard management. Some dead/dormant weeds are also shading out further weed growth.

Certification(s):

Organic
Regenerative Organic

COSTs:

Annual farming costs/acre ~$12,000

Weed Management Costs:
Suppress (organic herbicide): $138.57/pass
Gramegna: $141.06/pass
Weedwacker: $119.70/pass ​​
Yearly Weed Management Cost/Acre =$400/acre

Terroir Tapes with @realwolfofwine is coming to Napa!

Join us for a guided tasting of Napa Valley Terroir paired with classic hip-hop tracks on July 17th @napayard. 

Featuring wines from @napagreen certified members: 

@chimneyrockwinery 
@domainecarneros 
@grgichhillsestate 
@jessupcellars 
@spottswoodewinery 
@vsattui 
@younginglewood 

Plus some surprise pours, small bites and a downloadable playlist to keep the party going!

Ticket Link in Bio.

#winetasting #napavalleywine #hiphop #wineandhiphop
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☀️⚡️Join this workshop to hear about the renewable opportunities available for wineries - from our local CCA & strategic investments to achieving energy independence. 

With Speakers from @sprocketpower_ @schneiderelectric @mcecleanenergy @domainecarneros @harpersrest @napagreen and VinWizard.

Join us July 20th @grgichhillsestate 

➡️ Ticket Link in Bio. 

#sustainablewinery #climateaction #energyefficiency #energyindependence
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@firetreevineyards, located in Napa Valley’s Los Carneros region, is a family-owned estate that implements organic and regenerative farming practices, including @napagreen Vineyard Certification. 

With a herd of babydoll sheep, goats, pollinator habitat, and resident wildlife, this estate is truly vibrant. They are known for their exceptional chardonnays, produced from mature vines and holistic farming practices. 

Learn more from winemaker Julian Fayard, @fayardwinemaking, and find out how to taste these stunning wines. 

#sustainablewinery #winetasting #regenerativevineyard
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The North Bay Zero Waste Collective is a group of passionate wine industry professionals addressing gaps in the current recycling options available in Napa County. The inception of this collective grew out of a breakout session at the 2023 @risewinesymposium, where local industry leaders gathered to find a solution to common waste problems. What started as a discussion about what to do with the excess cardboard generated from winery production has evolved into an effective collective turning waste into a resource.

Read more at the @napagreen substack.

#climateaction #sustainablewinery #supplychainmanagement
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Congratulations to @truchard for @napagreen winery recertification! 

Truchard Vineyards has once again proven their dedication to climate action, sustainability, and protecting the environment. 

Book your visit to experience this intimate winery, with natural cave cooling, a menagerie of four legged farm helpers, and world-class wines. 

#sustainablewinery #winetasting #napavalleywine #winebusiness #napagreen
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In a saturated market, how can we stand out, maintain authenticity, and forge meaningful connections with today’s consumers? 

Join our workshop with speakers:
✅ Christian Miller – Research Director at the @winemarketcouncil 
✅ @evan__roscoe – Creative Strategist working in wine through Video, Stills, Art, and creator of GoferPost, the Marketing OS for small businesses
✅ Kaytlin Martino – Marketing Manager at @trefethenfamily 
✅ Luke Jeramaz – Digital Marketing Manager at @grgichhillsestate 
✅ Jessica Seletzky – Owner of @jonahmarketing and sustainability maven for purchasing responsible marketing merchandise

Wednesday, July 8, 2026
9:30 am to 12:00 pm
Trefethen Family Vineyards

➡️ Ticket link in bio
15 1
🍽️ Dine and Donate Today! 

Order @foodshedpizzanapa takeaway from 10am-7pm and 20% of the proceeds will go back to @napagreen to support climate action in our community! 

Be sure to mention Napa Green when you check out!

#dineanddonate #nonprofit #lunch #dinner #takeout
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Sustainability at @closduval is a holistic endeavor, touching every part of the winery from enhancing local biodiversity and reducing water consumption to using renewable energy throughout the winemaking process. 

Winemaker Carmel Greenberg highlights how this approach extends to their packaging. By adopting lightweight glass from Verallia, they are successfully lowering their carbon emissions and protecting the quality of the wine!

Grab a bottle today and experience sustainability in every sip! 

#sustainablewine #climateaction #napagreen #wineindustry #winetasting
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When you arrive @larkmeadvineyards you will immediately notice the incredible landscaping, teeming with life, which provides habitat and helps restore the watershed. 

In this video @avery.heelan talks about some of the other meaningful sustainability practices that are apparent thought the property. 

#climateaction #napagreen #sustainablewine #regenerativeag #winetasting
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Don’t leave money on the table! ☀️ 

Hear from @napagreen sustainability partner @bpi_power about why winery winery solar roadmap timing matters now! 

#renewableenergy #climatesmart #solarpower #wineindustry #sustainablewine
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Congratulations to @closduval for successfully earning their @napagreen winery recertification!

With more than 50 years of dedicated leadership spanning three generations, this family-run winery remains deeply committed to the future of their land and community. Their holistic approach to viticulture and winemaking reflects a steadfast mission to preserve their heritage while persevering for generations to come.

Plan your visit today to discover the breathtaking beauty and exceptional wines that define Clos du Val.

#winetasting #climateaction #sustainablewine #visitnapavalley
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@corisonwinery, a long time leader in sustainable practices, uses seasonal sheep grazing to naturally manage weeds, reduce tractor compaction, and enhance soil health. Another added benefit is the joy they bring to both the team and guests! 

If you want to see the sheep in action, plan a visit for early spring before bud break. 🐑 🐑 🐑 

#woolyweeders #regenerativeviticulture #climateaction #sustainablewine #winetasting
177 14
The “Virtuo” cap is made from 100% recycled pure tin showcasing a commitment to both aesthetics and the environment. Not only is it made out of recycled material, but it is also recyclable! 

Learn more by reaching out to @cork_supply, the exclusive supplier of the Crealis “Virtuo” capsules in Napa. Cork Supply is not only a @napagreen sustainability partner, but they are also @bcorporation  certified showing a deep commitment to people, products, and the planet. 

#wineindustry #winebusiness #supplychain #climateaction
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@crossroadsbyrudd wines are estate grown, organically farmed and @napagreen certified from soil-to-bottle. Each wine expresses a distinct sense of place, and are an authentic introduction to the people, land, and thoughtful craftsmanship behind every bottle. 

#winetasting #sustainablewine #regenerativeag #visitnapavalley #wine
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