Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

UC Cooperative Extension

Cleaning Up Wildfire Ash Safely

You can avoid many health hazards from wildfire ash following these tips from California Department of Public Health, found online here

or you can download and print this flier Cleaning Up Wildfire Ash Safely CDPH 7 Aug 2018


ACP (Asian citrus psyllid) found in San Joaquin county

The ACP (Asian citrus psyllid) was found in Lodi and Manteca.  Click here to find out how you can help prevent the spread of this unwanted pest and what to do if you think you have it.

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.

UC Blogs

Ready for UC Davis Biodiversity Museum Day?

This was the scene at the Bohart Museum of Entomology during the 2018 UC Davis Biodiversity Museum Day. (Photo by Kathy Keatley Garvey)

Are you ready for the eighth annual UC Davis Biodiversity Museum Day on Saturday, Feb. 16 when 13 museums and collections will be open on the University of California, Davis, campus? The event, free, family friendly and educational, is always held on...

Posted on Wednesday, January 23, 2019 at 5:00 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Family,Natural Resources,Pest Management,Yard & Garden

'A' is for Almonds, 'B' is for Bees

Benicia resident Gordon Hough captured this image of a bee nectaring on almond blossoms at the Benicia State Recreation Area on Monday, Jan. 21.

No, it's not Valentine's Day, yet. Yes, the almonds are blooming. No, it's not spring. But it looks like spring in Benicia. The almonds are blooming in the Benicia (Calif.) State Recreation Area. Benicia resident Gordon Hough, always on the lookout...

Posted on Tuesday, January 22, 2019 at 4:21 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Innovation,Natural Resources

UC Davis Researcher Targeting Zebra Chip: It's Not a Chip You Want

The potato psyllid, a pest of potatoes, transmits a bacteria that causes zebra chip disease. (Photo by Don Henne)

When you're munching on French fries or potato chips, you're probably not thinking about the potato psyllid. But you should be. You should especially be thinking about the zebra chip. No, it's not a newly marketed potato chip or computer...

Posted on Monday, January 21, 2019 at 2:44 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Innovation,Natural Resources,Pest Management

Make a Gift Online

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

Ag Center May 2008


Event Name

UC Blogs

Sheep and cattle grazing can reduce the fuel load for a potential wildfire. (Photo: Dan Macon) Livestock grazing helps California tackle wildfire
California is searching for solutions to the wildfire crisis. Livestock ranchers believe they can help. At the 14th Annual Rangeland Summit in Stockton in January, more than 150 ranchers, public land managers and representatives of non-profit...

All California Naturalists use the iNaturalist app. Documenting urban nature in the City Nature Challenge
Have you ever been on a walk and observed an interesting plant you couldn't identify? Encountered an unusual insect trapped in your home? Have you wondered why you used to see certain species in nature and you don't now? Or have you thought it might be...

The exotic soilborne Phytopthora cinnamomi was introduced in the Ione area of the Sierra Nevada foothills, where it is literally wiping out two native manzanita species. This picture shows how vehicles spread the pathogen along roads and tracks by kicking up infected soil, killing nearby manzanita. (Photo: Matteo Garbelotto) Is habitat restoration actually killing plants in California wildlands?
In 2014, plant biologists with the California Department of Agriculture reported an alarming discovery: native wildflowers and herbs, grown in nurseries and then planted in ecological restoration sites around California, were infected...

Remnants of a burned trailer park in Paradise after the Camp Fire. What can we learn from the 14,000 homes lost during the Camp Fire?
Shades of brown and grey cast over bricks, cement, remnants of metal roofs and steel beams from manufactured and modular homes, collapsed stucco walls, BBQs, shells of washers and driers, along with an occasional tea pot — that is what you can...

Participants constructed a simple potted plant with marigolds, chrysanthemums and mint varieties to adorn their spring celebration tables. (Photo: Debbie Handal) UC Master Gardeners partner with Alzheimer's San Diego in Reminiscence Gardening project
The UC Master Gardener Program of San Diego County has always been open to innovative ways of expanding its mission and passion for gardening into new parts of its community. The San Diego program has a rich history of successful partnering with other...

Webmaster Email: