herbicide-free case studies



Vineyard area:

40+ acres

Site Characteristics:

Terraced vineyards with slopes of 10-35%. Recovering from 2020 fire. Steadily replanting to get back to 88 acres of vineyard.

Tools/Equipment used:

Loved Sunflower (lost in fire). It was the main tool for under vine weed control. No longer in production.
Perfect under vine mower (lost in fire)
Hoe plow (didn’t work well on terraces)
Fischer Twister with a variable deck mower. We’ve only had it for one season so no strong opinions either way yet.
Weed eaters


Number of passes really depends on the year.


Six full-time team members. Bring in extra help for weed-eating and planting.

Organic Herbicides?



Planning to start in 2024


Almost no-till. Often before planting, but not always. Otherwise – every once in many years in a weak spot to add compost and increase fertility, and perhaps change cover crop.

Weeds of concern?

Fluvellin, Bristly Oxtongue
Biggest concern is voles. Have to keep it clean undervine so they don’t have cover. For baby vines, three shovel passes. Have owl boxes, raptor perches. Use mouse traps. Experimenting with different uses of grow tubes for baby vines.


Want ground cover. Only concern is undervine for voles. “There needs to be a big shift in people’s perceptions of beauty.”


Fish Friendly Farming


Pre-Fire farming costs/acre for producing vineyard: $11,000-$13,000
Depreciation of vineyard/acre: +/- $3000

Weed Management Costs:
Pre-fire weed control for producing vineyard: $1200-$1500/acre
This includes mowing, under vine mowing and slight under vine tillage (Sunflower, etc.), weed eating the entire terrace and under vine, some shoveling around vines in a couple blocks. Since the fire, things are so weird that the numbers just don’t make sense.

Post-fire weed control for newly planted vineyard (first two years): +/-$2,600/acre
Includes two weed eating passes, 2-3 shovel passes. It’s really all about the terraces. As we are replanting, we are eliminating the inside row on the terrace. This is for many reasons – one is that it will make weed eating a little easier, and I hope someone will invent my dream mower and this will improve weed control costs significantly.

Napa Green & Premiere Napa Valley 💚

Thank you for creating such a beautiful event @wheelerfarmswinery! 

Incredible offerings from Napa Green Certified wineries @aowinery, @chandonusa, @grgichhills, @inglenook1879, @rombauervineyards, @spottswoodewinery, @trefethenfamily, @troisnoixwine & @stsupery!! 

Cheers to @premierenapa!
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The whole team is here and some amazing friends are joining us like @spottswoodewinery, @accendocellars, @aowinery, @stsupery, @rombauervineyards, @chandonusa, @troisnoixwine, @trefethenfamily, @matthiasson_wine & @grgichhills! 

Our first @premierenapa event kicks off at 4pm today at @wheelerfarmswinery!! 🍷🎉
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Grazing in the vineyards with a big assist from Cup the Sheep Dog! 

We’ll see you at our event in partnership with @napa_valley_grapegrowers on Feb 27th at @thecastello! Link in bio for registration. 

#welovedogs #sheepdog #sheepfarming #grazing #vineyards #napa #napavalley #regenerativeagriculture #soilhealthmatters
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Sign up for the Grazing Workshop on Tuesday, Feb 27th at @thecastello at the link in our profile. 

@napa_valley_grapegrowers @perennialgrazing
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Add the Napa Green logo to your back label! 

Find the link in our profile or email megan@napagreen.org. Happy bottling season!
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Not just talking the talk but walking the walk is very important to us. One way we do that is by providing our members with as many tools and resources as possible. Here’s what’s coming up: 

1. Weed Management Equipment & Tools for herbicide-free farming - Thurs, Feb 15th at @inglenook1879 at 9:00am. 

2. Napa Green Premiere Open House for the Wine Trade - Thurs, Feb 22nd at @wheelerfarmswinery at 4:00pm. 

3. California Small Farms Conference - Thurs, Feb 25th with @mimicasteel & Ben Mackie at 3:00pm. 

4. Grazing for Vineyard Health & Fire Resilience - Tues, Feb 27th at @thecastello at 9:00am. 

Find all details and registration on napagreen.org under the Connect with Us tab or just head to the link in our profile. We’ll see you all soon.
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📣 February Events! 

www.napagreen.org ➡️ Connect with us ➡️ Events & Workshops! 

Or head the link in our profile to find it all & how to register with one click. See you all at an event soon.
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Join us for a Grazing for Vineyard Health & Fire Resilience Field Day in partnership with @napa_valley_grapegrowers. During this February 27th event we’ll discuss ways to best utilize sheep in the vineyard and employ grazing animals for woodland management, addressing both fire fuel reduction and post fire recovery. Don’t miss this opportunity to delve into regenerative practices for your vineyard and beyond! 

Find the link in our profile to register.

📸: @sarahannerisk
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History, sustainability & fine wine at Napa Green Certified @schramsberg! 🥂

#wine #sparklingwine #schramsberg #napa #napavalley #winecave #winecollector #winelover #sustainability #organicvineyard
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🍷Wine Trade! Register for our Premiere Napa Valley event on Feb 22nd at the link in our profile!🍷
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Apply for a grant! Applications can be found at the link in our bio. 

#sustainability #climateaction #winebusiness #wineindustry #napa #napavalley #grantapplications #napawinery
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📣 Announcing our first ever NVV Premiere Event! 📣

Thursday, Feb 22nd from 4pm-6pm at @wheelerfarmswinery. Register at the link in our profile!
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Providing resources, tools and education for our members is core to what we do. Come see us at a February event! 

Register at the link in our profile. We’ll see you there!
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Weed Management Event at @inglenook1879 on Thursday, Feb 15th from 9:00am - 12:00pm. Link in profile to register. 

Por favor, mira hasta el final para ver el mensaje en español.
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Save these dates! 3 great events coming your way in February. 

Find info and registration at the link in our bio or at our website: napagreen.org under Connect with us - Events & Workshops!
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