Help Desk

FOR GARDEN QUESTIONS - Our Help Desk is closed for in-person consultations due to the COVID-19 pandemic.

In order to protect everyone's health and safety we ask that you submit your questions by completing this form:

Plant Problem Diagnosis Sheet:  

Or you may leave a message by phone: 707-253-4143 

Volunteers will get back to you after they research answers to your questions.



Magnifying Glass


Keep the worms out of your Apples!
A 3 min video by Janet Fletcher, UC Master Gardener Napa County


Lake County, After Fire
Fire Prevention Websites
Be Prepared for Fire & Emergencies
Fire Wise Gardens
The Fire Wise Landscaping  from UCCE Sonoma County:
Napa Co. UCCE Fire Info
UC Integrated Grape Team
Submit your  Vineyard Questions  for symposium diagnosis or the latest viticulture information.
You can also subscribe to the newsletter,  The Hobby Vineyardist  to see upcoming educational events.


Gardening Resources

Find a Wealth of Garden Books and other Resources
at this link!
Click Here!


UC Master Gardener Publications
Trees to Know in Napa Valley
Month-by-Month Guide to Gardening in Napa County
Trees to Know in Napa Valley Month-by-Month Guide to Gardening in Napa County
 Click here for more info:  Our Books
UC Publications Catalog
Click here for the UC ANR Catalog: UC Publications
Find a Speaker
UC Master Gardeners of Napa County are available to deliver research-based garden information to your group, such as garden clubs, business or civic organizations and many others.  Click here for more info:  Need a Speaker?


Need a Speaker


Tomato Growing Help and Tips!

Find Master Gardeners Around Town
March - May
Visit the Master Gardeners at local garden retailers to answer your home gardening questions.
May - October 
American Canyon, Calistoga and Napa
Stop by the Master Gardener information booth.
Seasonal Bee Gardening
Click Here to Find More Info About Providing Food, Cover Growing Plants and More for Bees! 
Waterwise Gardening
Click Here for Info from Sonoma County MGs Regarding:



Donate Now
Dean Donaldson Endowment Fund
Environmental Horticulture Education

Dean Donalson