UC Cooperative Extension
ACP (Asian citrus psyllid) found in San Joaquin county
Who We Are
Across California, the University of California’s 64 Cooperative Extension offices are local problem-solving centers. We are the bridge between local issues and the power of UC research. Our county-based staff is part of the community – we live and work in the areas we serve.
More than 300 campus-based specialists and county-based farm, home and youth advisors work as teams to bring practical, unbiased, science-based answers to problems across California.
As part of the agricultural community, we help farmers develop more-efficient growing methods, solve pest management problems and develop crops and irrigation methods that use less water.
As stewards of the land, we help develop smart water-use strategies, develop wildfire education and help preserve natural areas and farmland.
As advocates for healthy communities, we promote healthy diets and exercise for better health, help Californians learn to choose the most nutritious foods and help shape the citizens of tomorrow through the 4-H Youth Development Program.
And thousands of volunteers extend the reach of our work through the Master Gardener Program and the California 4-H Youth Development Program.
We work in full partnership with federal, state, county and private resources.
We are stewards, problem-solvers, catalysts, collaborators and educators.
We are UC Cooperative Extension.
When the Bohart Museum of Entomology, UC Davis, hosted an open house showcasing specimens collected last summer in Belize, attendees came from far and wide, from senior citizens to pre-schoolers. Bohart associate Fran Keller, an assistant professor at...
So here's this gravid praying mantis perched on a Mexican sunflower (Tithonia) in a Vacaville pollinator garden. She's in a butterfly state-of-mind, a picture of patience and persistence, a predator like no other. She doesn't have long to wait. A...
It's rare to see a tagged monarch, either when it's migrating to its overwintering site or when it's clustered high in a tree, sheltered from the elements. When we drove to Santa Cruz on Dec. 27, 2014 to an overwintering site, we saw a monarch...
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Brent A Holtz Ph.D.
San Joaquin County Cooperative Extension
Robert J. Cabral Ag Center
2101 E. Earhart Avenue, Ste 200, Stockton, CA 95206
Phone: (209) 953-6100
Fax: (209) 953-6128
Click here for a map
Twelve rules of thumb for creating a bee-friendly home landscape this fall
Posted 9/16/2016 - California's agriculture, plants and wildflowers depend on bees (and other pollinators) for pollination. Tiny, buzzing bees are not only fun to watch zoom around the garden, but they are crucial to our food supply and ecosystem. “Fall, with its...
UCCE advisor publishes third exciting children’s book
Posted 9/15/2016 - Nursing back to health a calf mauled by wolves in River of No Return, 11-year-old Jack learned essential skills that would serve him well as the third and final book of the Black Rock Desert Trilogy children's series unfolds. The novel opens with a touch...
Communities reel in revenue from sport fishing
Posted 9/13/2016 - Angling is a multi-million dollar recreational affair in California that local businesses can capitalize on, says UC Cooperative Extension advisor. In August, the Clayton Fire burned nearly 4,000 acres and 198 homes and businesses in Lake...
Community invited to explore redwood issues in Eureka Sept 13-15
Posted 9/3/2016 - Foresters, landowners, managers, community and conservation groups, land trustees, scientists and policymakers will meet Sept. 13 to 15 in Eureka for the 2016 Coast Redwood Science Symposium. The symposium, which first convened in Humboldt County in...
How wildflower plantings on farms benefit bees and crop pollination
Posted 9/2/2016 - Bloom where you're planted. That old adage takes on more meaning when you plant wildflower strips on your farm. Wildflowers add resilience to our farming systems by providing bees with habitat and food - pollen and nectar. And they're not just for honey...