UC Master Gardeners • Napa County
The Tomato Plant Sale and Education EventOur annual Tomato Plant Sale and Education Event returns for 2026Saturday April 11 9:00 am - until sold out. 1710 SOSCOL AVE. NAPA - NEXT TO CENTRAL VALLEY HARDWARE Make Sure to Check out our Education tables and talk to our Tomato Pros!
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Master Gardener Help Desk
Got a plant problem or general gardening question? Your Napa County Master Gardeners are here to help!
Simply complete the Plant Problem Help Form and we will contact you once we have researched your question. For best results, please attach at least one photo of your plant.
Learn more about the Master Gardener Help Desk
Workshops and Demonstrations
Attend our free UC Master Gardener workshops and demonstrations to learn expert tips and hands-on gardening techniques for a thriving garden all year round!
Want to Become a Master Gardener?
Attend one of our informational sessions to find out how.
Master Gardener Volunteers are adults of all ages who are willing to learn, volunteer, and be involved; some knowledge of plants and gardening is an asset. Master Gardener Volunteers are well trained and enthusiastic individuals capable of imparting their knowledge to diverse groups of people in a wide range of community settings.
Information on our Master Gardener Trainee Class
Additional Projects and Resources
Community Gardens
Stay Connected
Contribute for a Better Future
Upcoming Events
Spring and Summer Vegetables - Napa, CA
Spring and Summer Vegetables - Yountville, CA
How to Plan Planting a Vineyard
Worm -or- Backyard Composting Workshop (Multiple Dates Available)
Office Locations
UC Master Gardeners of Napa County
1710 Soscol Ave
Suite 4
Napa, CA 94559
United States