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Napa County UCCE
University of California
Napa County UCCE

Vineyard Views & Events

Latest information on viticulture, UC research and newly released UC publications.

Issue Articles Type Date Added
Focus On Physiology - May 4, 2017

Focus on Physiology (event flyer)
Thursday, May 4, 2017, 9 am – 11:30 am - Napa

Registration is REQUIRED. $30/person

Online registration (credit card only)

Check or cash payment form (cash or check payable to UC Regents)
Sorry, we are unable to process credit card payments at the office or through the mail.

Mail or drop off your payment to:
UC Cooperative Extension
1710 Soscol Avenue, Suite 4
Napa, CA 94559 

This is a joint meeting with Napa Valley Vineyard Technical Group, UC Cooperative Extension-Napa County, Napa Valley Wine Technical Group, and UC Davis Viticulture & Enology

PDF 4/6/17
Vineyard Weed Control - Glyphosphate and Alternatives

The Napa County Agricultural Commissioner’s Office and University of California Cooperative Extension-Napa County are hosting a meeting entitled:

“Vineyard Weed Control – Glyphosate and Alternatives"

April 19, 2017, 9:00am-12:00pm 

Location: Napa Valley College, Little Theatre (Bldg. #1200),

                2277 Napa Vallejo Highway, Napa, CA 94558

Registration is required.  To register, please call (707) 253-4357.

Please note: PARKING for this meeting on this day is FREE. Please remember that all parking restrictions (disabled, red zone, staff zone) remain in force.

For more information please see the attached flyer or contact the Napa County Agricultural Commissioner’s Office at (707) 253-4357. 

PDF 3/8/17
UCD On the Road Event

UC Davis Viticulture and Enology On the Road in Napa
Flyer/Agenda– Cost: $50/person

Yountville Community Center
6516 Washington Street, Yountville, CA 94599
March 24, 2017, 8:30 am-1:30 pm 


If you have any questions about this event or registration, please email Karen Block at

View information about “On the Road” classes. To be added to the “On the Road” mailing list, email Kay Bogart at

Co-hosted by UC Cooperative Extension-Napa County, The Napa Valley Vintners, and The Napa Valley Grape Growers.


PDF 3/3/17
Management of Virginia creeper leafhopper

Follow the link below to updated information from Houston Wilson and Lucia Varela regarding the management of Virginia creeper leafhopper (VCLH), an invasive pest of north coast vineyards. 

The VCLH areawide management project website contains additional information on leafhopper identification, monitoring, natural enemies, and management. 

PDF 2/8/17
Tree Assistance Program - Disaster Assistance - Grapevine Red Blotch

Tree Assistance Program (TAP) – provides financial assistance to eligible orchardists and nursery tree growers to replant or rehabilitate eligible trees, bushes and vines lost by natural disasters. Eligible trees, bushes, and vines are those from which an annual crop is produced for commercial purposes.  Trees used for pulp or timber are ineligible for TAP assistance. 

Please read the following documents for eligibility and application process:

Tree Assistance Program (TAP) Fact Sheet

Approved Disease – Grapevine Red Blotch-eligible plant disease for select counties in California

For more information on FSA disaster programs, visit or visit your local FSA county office.  Visit to find your local FSA county office.

PDF 4/12/16
Potential benefits of powdery mildew resistant grapevines

Recent research from the UC Davis Department of Agricultural and Resource Economics evaluated the potential economic benefits to California of powdery mildew resistant grapevines. (See newsletter link below).

As a follow-up to this study, the research team is collecting information on grower preferences for specific traits. We would appreciate if you could take a few minutes to respond to their survey questions

Please direct questions to Olena Sambucci,

PDF 12/10/15
Walnut Twig Beetle and Thousand Cankers Disease

In early September 2015, the California Department of Food & Agriculture confirmed the presence of thousand cankers disease of walnut in Napa County. 

Access the newsletter below for additional information on this fungal disease and the beetle that moves it from tree to tree. 

PDF 11/3/15
Sustainable Groundwater Management Act

Signed by Governor Brown on August 29, 2014

Videos from the entire day-long seminar regarding the passage of SGMA. Panel discussion of both groundwater and surface water issues in the current political and drought environments. 

View the entire day’s lecture (February 13, 2015 Water Regulation and Vineyard Management Seminar) 

Courtesy of Department of Viticulture & Enology
UC Davis 


PDF 8/13/15
Monitoring Guide for Western Grapeleaf Skeletonizer

On June 24, 2015, staff of the Napa County Agricultural Commissioner found one male Western Grapeleaf Skeletonizer in a pheromone-baited trap in a vineyard on Tubbs Lane in Calistoga. 

UCCE Advisors Lucia Varela and Monica Cooper developed a "Monitoring Guide for Western Grapeleaf Skeletonizer" so that vineyard owners, growers and workers could familiarize themselves with the pest's life stages and feeding habits.

Please use the newsletter link below to access the Monitoring Guide (English and Spanish versions). 

If you find this pest or feeding damage in Napa County please contact the office of the Agricultural Commissioner: 707-253-4357, OR contact UC Cooperative Extension: 707-253-4221,

For additional information on biology and management of this pest, access the UC IPM Pest Management Guide for Western Grapeleaf Skeletonizer

PDF 7/8/15
Arboreal Camel Cricket

In April, we observed leaf symptoms in select vineyards consistent with feeding damage by arboreal camel crickets. 

For photos and additional information, access the newsletter using the link provided below. 

PDF 6/1/15
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