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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.  San Diego County Yearly Impact


Why we love being Master Gardeners...
Promoting healthy people and communities in San Diego.

Mark your calendars for Giving Day May 14-15 Noon to Noon. Your donations help us continue our support for San Diego County gardening. link.ucanr.edu/GiveSanDiego Thank you!


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 hotline 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. Click Here for Upcoming Events

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

Contribute for a Better Future

Upcoming Events

Closeup of child's hands holding green flowerbuds. Next to it, the words "Poway Library STEAM Kids Wednesdays 3:30 pm. UC Master Gardeners, Healthy Soils, April 8, Decomposition May 13, Seeds June 10. Learn how to become a master gardener with the UC Master Gardeners of San Diego County!" Below are the logos of UCANR Master Gardeners, Master Gardener Association of San DIego County, County of San DIego Library "Sdcl.org/poway Poway Library 13137 Poway Rd. Poway, CA 92064 858-513-2900"
Event Date
May 13, 2026

STEAM Kids Garden Talk: Decompostion

Kids will learn from UC Master Gardeners all about decomposition, an important process in our garden that brings nutrition back to the soil. Learn about the tiny garden creatures that help recycle…
Closeup of child's hands holding green flowerbuds. Next to it, the words "Poway Library STEAM Kids Wednesdays 3:30 pm. UC Master Gardeners, Healthy Soils, April 8, Decomposition May 13, Seeds June 10. Learn how to become a master gardener with the UC Master Gardeners of San Diego County!" Below are the logos of UCANR Master Gardeners, Master Gardener Association of San DIego County, County of San DIego Library "Sdcl.org/poway Poway Library 13137 Poway Rd. Poway, CA 92064 858-513-2900"
Event Date
June 10, 2026

STEAM Kids Garden Talk: Seeds

Kids will learn from UC Master Gardeners all about seeds and how our plants are able to grow from these tiny bundles of wonder. Shapes, sizes, methods of travel, and ways to plant seeds will be…

Mission Statement

To extend research-based knowledge and information on home horticulture, pest management, and sustainable landscape practices to the residents of California.