Contra Costa Master Gardeners

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Do you have gardening questions? Contact us.

For Contra Costa County, California only

We answer questions for people living in Contra Costa County. For other counties in California, check with your local University of California Cooperative Extension office. Directory of UC Davis Offices.

Master Gardener Telephone Helpline

(925)646-6586 -Monday through Friday - 9 AM to noon. Master Gardeners will answer your questions on home gardening and pest control. This service is free of charge and is staffed by experienced gardeners, highly trained to answer your questions. Samples of insects, weeds and diseased plants may be taken to the office for diagnosis during the same hours.

You may also write to 75 Santa Barbara Road, Second Floor, Pleasant Hill, CA 94523.

Master Gardener Email Help

Contact us by email for answers to your gardening questions. Please include the city of the problem, the type of plant and its age, symptoms, care the plant has received, and any other information that might help in the diagnosis.

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The mission of the University of California Division of Agriculture and Natural Resources and the Contra Costa Master Gardener's Program is to serve California through the creation, development and application of knowledge in agriculture, natural and human resources. The Contra Costa Master Gardener program functions as a volunteer outreach arm of Cooperative Extension, bringing research-based information and knowledge to improve residential horticulture, urban pest management and resource conservation.

Equal Opportunity Policy

In accordance with applicable State and Federal laws, the University of California does not discriminate in any of its policies, procedures, or practices on the basis of sex, religion, color, national origin, marital status, sexual orientation, age, veteran status, medical condition, or handicap. Inquiries regarding this policy may be addressed to the Affirmative Action Director, University of California, 300 Lakeside Drive, 6th Floor, Oakland, California 94612-3560 or by calling 510-987-0096.