Our mission

UC Master Gardener volunteers in Ventura County demonstrating to residents how to plant a low-water use home landscape.

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

In Our Communities

Since 1980, the UC Master Gardener Program has grown to 6,303 active volunteers and trained 33,901 people across fifty-two counties. UC Master Gardeners come from a variety of backgrounds and have a passion for helping others. They receive horticulture training and learn how to support gardeners and community partners. Working together, UC Master Gardeners are dedicated to empowering neighbors, conserving natural resources, protecting the environment, and supporting resilience in light of our changing climate.

Volunteers by County

Single-county programs

Alameda 220
Amador 66
Butte 107
Calaveras 78
Colusa 18
Contra Costa 255
El Dorado 161
Fresno 180
Glenn 9
Lake 35
Los Angeles 382
Madera 36
Marin 348
Mariposa 82
Mendocino 30
Merced 53
Napa 163
Nevada 125
Orange 292
Placer 166
Riverside 311
Sacramento 216
San Bernardino 214
San Diego 337

San Joaquin 145

San Luis Obispo 136

Santa Barbara 56

Santa Clara 302

Shasta 45

Solano 149

Sonoma 296

Stanislaus 67

Trinity 15

Tuolumne 93

Ventura 200

Multi-county programs

Del Norte-Humboldt 48
Inyo-Mono 49
Kings-Tulare 98
Lake Tahoe
Basin 66
Monterey-Santa
Cruz 145
Plumas-Sierra 10
San Francisco-
San Mateo 197
Sutter-Yuba 59