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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 in person events and programs are being postponed or canceled through the end of April.  Please check back here regularly for updates and changes in offerings, including virtual opportunities to support your home gardening. 



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 use our email at mastergardeners@countyofnapa.org )

The master gardener volunteers are working remotely and they 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.


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 3-month period to become certified. Instruction provides a practical course in plant science and horticulture. 
  • stay up-to-date on current UC research gardening information through continuing education provided by the UC Cooperative Extension.  
  • For more information regarding Napa County UC Cooperative Extension offerings please click the logo below:

What we provide:
Mobile users to find offerings and events menu.  Click the 'Vent' 
Mobile Users, Click the 'Vent' (Top, Left Side)
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