Hero Image

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.


All information sessions for the MG Class of 2023 have concluded.

We will post information for the Class of 2024 beginning in the summer of 2023.



Due to County login policy difficulties, our Office Help Desk is currently CLOSED to phone, email, and in office contact. 


However, we are available to answer your gardening questions at the Tuesday Napa Farmers Market!

Master Gardener Info Booth & Help Desk
Every Tuesday Farmers Market through October 2022
from 8:00 a.m. to 12:00 p.m.

Located at the 1100 West Street Parking Lot in Downtown Napa.





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 currently unavailable by phone or email. Please visit us at the Napa Farmers Market for your garden questions. 

Napa Farmers Market
Every Tuesday 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 recommended for everyone and required for non-vaccinated people.

Weekly Newspaper Article