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Sign up for our seasonal newsletter "News to Grow By" and event alerts!


Spanish Beginning Gardening Course Registration Now Closed


La inscripción para el curso grátis Cultivo de Verduras para adultos monolingües en español está cerrada. Visite nuestra página Jardineros para más información.


Virtual Ask a Master Gardener - A new online offering with free personal consultations about your home garden  

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Unfortunately, all available consultation times for our April 24 Virtual Ask a Master Gardener event have filled. Please join us for a future event. Watch our web page for more events like this at a later date.


WEBINAR! Composting and Vermiculture for the Home Gardener. 


Tues 4/20/2021 at 6 pm: Sign up and here are more details. Co-hosted with partner Contra Costa County Library. Free!


Join Us! We will be holding a remote learning New Volunteer Training class this fall (2021-2022). Find more details here.


Planting a Landscape Tree video now available on our YouTube channel.


Due to ongoing COVID-19 restrictions, our in-person talks and Ask-a-Master Gardener tables at Farmers Markets are on hold. But you can join our online webinars and see recordings on our YouTube channel. Sign up for our newsletter and to receive email notices of upcoming webinars. Or join us on Facebook  


Advice to Grow By...Ask Us!

UC Master Gardener advice and problem diagnosis services are available year-round!  For problem diagnosis and answers to your gardening questions, contact our Help Desk.  The Help Desk is open 50 weeks of the year, Monday through Thursday, from 9:00 am to Noon (closed winter holidays). Due to the current COVID-19 restrictions, our Master Gardeners are working remotely—

In your request—

  • Include your name, phone number and city (plant advice depends on local conditions!).
  • Describe the problem in detail. Include the name of the plant if known, when the problem began, and cultivation history such as watering, fertilizing, pruning, pesticides, etc. 
  • Send photographs, if applicable. Photographs help!

Our gardening blog, HOrT COCO, talks about seasonal hot topics, frequently-asked questions, and truly unique or peculiar requests for help. Subscribe here.



UC Master Gardener Program of Contra Costa County
2380 Bisso Lane, Suite B, Concord, CA 94520
(925) 608-6683 (email only during Shelter-in-Place), ccmg@ucanr.edu  

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The 2021 Great Tomato Plant Sale Was a Huge Success!

The sale is now over, and Wow! What an adventure! You supported us in such a big way, and we are so grateful!

We're leaving the plant descriptions and photos on our website for you to use as a resource. We hope you enjoy your summer veggie garden.

See the 2021 Great Tomato Plant Sale web page to access the treasure trove of information.



From Frank McPherson, Bay Area County UCCE Director

UC Master Gardeners are University of California Cooperative Extension (UCCE) trained volunteers. They are residents of our community who give back all year to provide UCCE researched-based horticultural information to people in their communities and throughout the state. They give talks and demonstrations, conduct plant clinics, staff phone help lines, provide training at community gardens, support school garden programs, staff information tables at Farmers Markets, fairs and nurseries, and more.

If you would like to support our efforts, donate now. Thank you!


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