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The Master Gardener program is a volunteer organization associated with the University of California Cooperative Extension.  Our mission is to extend research based knowledge on home horticulture, pest management, and sustainable landscape practices to the residents of California and to be guided by our core values and strategic initiatives.



Help Desk is open for your garden questions on Mondays and Fridays, from 10 a.m. until 1 p.m. 


Click a Workshop to Sign Up!


Stay Safe!
Master Gardener volunteers:
  • Are trained, non-paid teaching staff certified to extend practical horticultural information to Napa County residents.
  • Complete an intensive in-person and on line training program in plant science, basic horticulture, and other topics over several months to receive certification. 
  • Stay up-to-date on current UC research based gardening information through continuing education provided by UC Cooperative Extension.  
  • For more information on Napa County UC Cooperative Extension please click the logo below:

What we provide:

Fires, After-Fire & Disaster Resources

For fire resources including a state-wide fire map, air quality and evacuation info, lost and deceased animals, and more, visit: LNU Lightning Complex Fires Resources

Fire & Post-Fire Resource from County of Napa

Post-Fire Resources from Napa Resource Conservation District (RCD) https://naparcd.org/wildfire/ 

Also see:
Fire & Disaster Resources UCCE Napa County or UCCE Sonoma County

Home Garden Produce Safety handout (2 pg pdf) - Produce Safety after a Fire 
Evacuation check-list - 1 page printable sheet from Marin Fire Safe


Mobile users: To find offerings and events menu, click the 'Vent' at the top of your Mobile Browser:
Mobile Users, Click the 'Vent' (Top, Left Side)

Contact Us

UC Master Gardeners Napa County
1710 Soscol Avenue, Suite 4
Napa, CA 94559-1315

Master Gardeners are available to answer your gardening questions on Mondays and Fridays from 10 a.m. until 1 p.m.  See the contact instructions by clicking on the Garden Questions? on the top menu bar of this page.

Napa Farmers Market (April - October)
Master Gardeners are available to answer your gardening questions at the Farmers Market on the 1st and 3rd Tuesday of each month, from 8-12pm
1100 West St. Parking Lot, Downtown Napa. 

COVID-19 - Master Gardeners are doing various program venues, including by zoom, outdoors and indoors in-person. For indoor events masks are suggested for everyone and required for anyone who has been exposed within the last 10 days, to someone who has COVID-19.

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