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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.
For Information on becoming a Master Gardener volunteer click here.


COVID-19 - In keeping with precautions and recommendations, Master Gardener are not doing any in-person events indoors at this time.  We are offering  on-line virtual programs and will continue to add those as we develop them. Please check back here for updates in our offerings.

MG Trainee Class 2022, Join Us




Our Help Desk is open to answer your questions by email and phone.
To submit your questions please complete our diagnosis form or
leave a phone message at:  (707) 253-4143
Note: To submit a photo to go with your diagnosis sheet please send email to:  mastergardeners@countyofnapa.org

The master gardener volunteers are working remotely and will get back to you after they research your questions. Once it is safe to do so, we will reopen our office to serve you again in person.

Upcoming Workshops

Stay Safe!


Master Gardener volunteers:
  • are trained, non-paid teaching staff certified to extend practical horticultural information to Napa County residents.
  • receive an intensive 88-hour training program over a several months to become certified. Instruction provides a practical course in plant science and basic horticulture. 
  • 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)
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