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UC Master Gardeners of San Diego County

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Welcome to UC Master Gardeners of San Diego County

As part of the University of California's Agriculture and Natural Resources division, we serve our community by sharing research-based knowledge and sustainable gardening practices. Our dedicated volunteers work to empower San Diego County residents with the skills and expertise needed to grow food, tend gardens, and protect California's precious natural resources. We understand that every garden and gardener is unique. That's why we customize our outreach and education to embrace San Diego County's distinctive landscape and diverse communities. Whether you're a first-time gardener or a seasoned green thumb, we're here to help your garden thrive. Join us in cultivating a more sustainable, beautiful, and bountiful San Diego County. 

Sign up for our newsletter to get updates on events, workshops, and local garden tips!

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Have Garden Questions?

Have a gardening question? Our trained UC Master Gardener volunteers are ready to help! Reach out to our Help Desk for free, research-based answer to your gardening questions. Whether you're battling pests, selecting plants, or starting your first garden, we're just a call or click away. 
Call our Master Gardener hot-line at (858) 822-6910, it's FREE! Email us at: Help@mastergardenersd.org

Events

Ready to improve your gardening skills? Join us for hands-on workshops throughout the year, covering topics from mastering tomato growing to creating water-wise landscapes. Whether you're looking to learn one new skill or dream of becoming a certified UC Master Gardener, we have an event for you. 

Browse our upcoming workshops and training opportunities. Upcoming Events

 

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"Advice to Grow by... ask us"
Our UC Master Gardener Program is proudly supported by Master Gardener Association of San Diego County. Visit their website to learn more. 

 

 

 

Contribute for a Better Future

Upcoming Events

Master Gardeners Helping at Booths
Event Date
February 14, 2026

Ask-A-Master Gardener Booth

Visit the Ask-A-Master-Gardener booth for science-based gardening advice. The Poway Farmers Market is sponsored by the City of Poway and Outback Farms. This is a free, pedestrian-friendly…
Group of Master Gardeners smiling at a tool care booth
Event Date
February 15, 2026

Garden Talk: Tool Care 101

The Southern California Plumeria Society kicks off its 2026 season with a talk from Master Gardener DeLayne Harmon on Tool Care 101. Free admission, all welcome, plumeria cuttings and opportunity…
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Event Date
February 26, 2026

Garden Talk: "Natural" Pesticides and You

MG Dawn will speak to the Vista Garden Club about "natural" pesticides and what you need to know when you look for 'organic' ways to control pests.  https://www.californiagardenclubs.com…
People standing and working in community gardens, plus a colorful flier image with event information.
Event Date
February 28, 2026

Community Garden Leaders Day

"CULTIVATING COMMUNITY CONNECTIONS"Who Should Attend? - Current and Future Community Garden Leaders Why Attend?- Network with Counterparts County-wide- Hear from Key Topic Experts- Share…