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

Bid on the Ultimate Ranch Immersion in Rutherford for Two!

Step away from the ordinary and immerse yourselves in the vibrant heart of Napa Valley with this exclusive two-night “Vigneron” experience at Tres Sabores, a Napa Green certified, organic estate. This is a rare invitation to live the “Ranch Life” and support a great cause!

You and a guest will enjoy a two-night stay in the charming, vineyard-side Casita, a private retreat tucked directly into the Rutherford Bench vines. Tres Sabores is a woman-owned and led “hidden gem” where owner and winemaker Julie Johnson provides a genuine expression of her Rutherford home.

Your Experience Includes:
🍇 Casita Accommodations 
🍇 Culinary Delights
🍇 Vigneron Immersion
🍇 Estate Tasting
🍇 And More! 

This unforgettable package is being offered in support of Napa Green. Place your bid now for a chance to experience this unique, intimate Napa Valley getaway.

Link to bid in bio. 

#ecotravel #ecotraveller #sustainablelife #regenerativefarming winetasting
25 0
Exclusive Experience Alert!

Rarely does an opportunity arise to step behind the gabion walls of @dominusestatewinery. As the winery is strictly closed to the public, this lot offers a near-impossible-to-book journey for the serious collector. 

The Terroir: Your afternoon begins with a private technical walk through the Napanook Vineyard. Learn about the estate’s pioneering dry-farming practices and the gravely soils that produce the structure for which Dominus is world-renowned.

The Architecture: Step inside the iconic, gabion-clad winery designed by Pritzker Prize–winning architects Herzog & de Meuron. You will explore the “stone wickerwork” of this architectural marvel, which blends seamlessly into the Yountville landscape.

The Vertical Tasting: The visit culminates in an intimate, private tasting of multiple vintages of Dominus. This vertical exploration allows you to experience the evolution of these wines side-by-side, guided by an estate expert.

This exclusive experience awaits your bid at the 6th Annual @grapes.for.humanity.canada Auction. Proceeds go directly towards supporting climate action initiatives within the wine industry.

Link to bid in bio. 

#climateaction #nonprofit #visitnapa #ecotourism
21 1
Insider Experience Alert! 

Experience a luxurious deep dive into one of Napa Valley’s most hallowed sites. This lot combines a historic stay at The @salvestrin.inn with a masterclass in terroir through the lens of the legendary @salvestrinwinery Dr. Crane Vineyard.

A Two-Night Estate Escape: Enjoy a two-night stay for two guests at the historic Inn at Salvestrin. Located directly on the estate, you’ll be steps away from the vines and minutes from downtown St. Helena.

The Dr. Crane Library Vertical: A private, hosted tasting for two featuring a curated vertical flight of library wines. Experience the evolution of the stony, sun-drenched Dr. Crane soils across multiple vintages.

This insider experience awaits your bid at the 6th Annual @grapes.for.humanity.canada Auction. Proceeds go directly towards supporting climate action initiatives within the wine industry.

Link to bid in bio. 

#climateaction #nonprofit #visitnapa #ecotourism
21 2
Celebrate Earth Day Napa with the @napagreen team at @earthdaynapa on Saturday, April 18, 2026 at the Oxbow Commons. 

Enjoy Napa Green Certified wines donated by sustainability leaders, @stsupery and @cliffamily, who both won 2026 California Green Medal Sustainable Winegrowing Awards!

Featured wines:
🌱 St. Supéry Estate Sauvignon Blanc
🌱 St. Supéry Estate Rosé
🌱 Clif Family Rte Blanc
🌱 Clif Family The Climber

All proceeds from the donated wine support the Environmental Education Coalition of Napa County’s Field Trip Bus Grant Program and the Darcy Aston Scholarship.

Cheers to a sustainable Earth Day, and every day!

#earthday #earthmonth #climateaction #sustainablewine
44 1
Soil-to-bottle sustainable experience alert!

Join the team at @spottswoodewinery for an intimate immersion into one of Napa Valley’s most celebrated heritage estates. Widely regarded as a benchmark of Napa Valley excellence, Spottswoode is a global pioneer in regenerative viticulture and a dedicated guardian of the land.

Four guests will enjoy an exclusive “Soil-to-Bottle” walking tour of the historic 40-acre St. Helena estate, which has been farmed organically since 1985, and the Take-Home Collection. 

This exclusive soil-to-bottle experience awaits your bid at the 6th Annual @grapes.for.humanity.canada Auction. Proceeds go directly towards supporting climate action initiatives within the wine industry.

➡️ Link to bid in bio.

#climateaction #nonprofit #visitnapa #ecotourism
28 2
Dream Destination Alert! 

Step away from the tourist path and into the heart of the Napa Valley. You and a guest are invited to the western foothills of the Rutherford Bench for a two-night stay at the @tressabores Casita - a charming, private retreat tucked directly into the vines of this  @napagreen certified organic estate.

A dream experience awaits your bid at the 6th Annual @grapes.for.humanity.canada Auction. Proceeds go directly towards supporting climate action initiatives within the wine industry.

Link in bio.

🧳🐑🍷

#climateaction #nonprofit #visitnapa #ecotourism #ecotravel
30 4
Join us for an engaging presentation from regional leaders in regenerative viticulture. We will discuss techniques, tools, and services that help growers enhance the health of their vines, reduce their reliance on inputs, and increase the resilience of their vineyards to mother nature’s curveballs. 

Tuesday, April 28th at the @chandonusa tasting room 

Including speakers from @matthiasson_wine @spottswoodewinery @bedrockwines @lallemandplantcareusa @hopenvironmental1965 

➡️ ticket link in bio 

#regenerativeag #regenerativeviticulture #climateaction
38 3
Napa Green is excited to announce a partnership with the 6th Annual @grapes.for.humanity.canada. This collaboration leverages the international fine wine community to raise funds for our local climate action work.

Check out these incredible @napagreen certified member lots supporting climate action in our community. 

🍇 Lot 17: Behind the Gabion Walls: A Private Vertical at @dominusestatewinery for Four 

🍇 Lot 20: A Private Legacy in the Vines: The @salvestrinwinery Dr. Crane Experience for Two

🍇 Lot 23: The Art of Stewardship: A Private @spottswoodewinery for Four

🍇 Lot 24: The Ultimate Ranch Immersion: Experience @tressabores in Rutherford for Two 

Bidding runs from April 16-22. 

➡️ Learn more at the link in our bio. 

#climateaction #wineindustry #nonprofit
22 2
Join @napagreen for @cliffamily Sip & Support on April 15, 2026. 🍽️🍷

Clif Family Winery’s “Sip & Support” is a monthly community-focused program that donates 20% of all food and wine sales from the day to a local non-profit organization! 🙌

We are grateful for your support and delicious farm to table dishes! 

#nonprofit #climateaction #sustainablewine
14 2
Join @napagreen and the @regenerativeviticulture Foundation for the Napa #OneBlockChallenge Field Day @crockerstarr with @hopenvironmental1965 on April 17th. 

Anyone can join, whether you are already a participant of the One Block Challenge, or you are a wine grower who is curious about regenerative viticulture.

➡️ Registration link in bio! 

#regenerativeviticulture #regenerativeag #climateaction
45 2
Thank you to @katmartine211, @winebusinessmonthly for attending our workshop and sharing the importance of sustainability in the supply chain. 

We are excited that our @napagreen members, broader industry, and community are all taking strides to further reduce emissions and environmental impact throughout the product lifecycle. 

#climateaction #wineindustry #winebusiness
21 1
🐑 @corisonwinery, a long-time advocate for organic practices, used a @napagreen Climate Action Matching Grant to begin grazing sheep at their Kronos Vineyard, an ancient vineyard management technique. 

This initiative has helped Corison reduce emissions, improve soil health, and increase vine resilience, leading them to continue and expand the practice in subsequent years.

➡️ Read more at the link in our bio. 

#climateaction #regenerativeviticulture #sustainablewine #woolyweeders
137 5
Hear from @ballentinevineyards winemaker @brdevlin about their legacy of sustainability. 

@napagreen certified member @ballentinevineyards ethos focuses on sustainable practices that prioritize quality and minimize environmental impact for future generations. 

#climateaction #sustainablewine #wineindustry
21 1
Thanks to @grgichhillsestate for hosting our Cover Crop Workshop last month in collaboration with @regenerativeviticulture. 

We had an incredible time in the vineyard exploring cover crop with @greencoverseed. 

Cover crops are essential for managing soil health, erosion control, increasing biodiversity, and a bunch of other benefits including greens for lunch! 

#regenerativevineyard #oneblockchallenge #napagreencertified #covercrop
61 0
This error message is only visible to WordPress admins
Error: There is no connected business account for the user .