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Webinar in Spanish!
Cultivo de Vegetales en cada Estación

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El 15 de junio a las 6 PM estamos llevando a cabo un seminario web en Zoom, sobre jardinería comestible, en español, organizado por la biblioteca de Contra Costa. Más información


Have a home gardening question in Contra Costa County? "Ask a Master Gardener!" Learn more and register for your online personal consultation with Master Gardener volunteers.

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Virtual Ask a Master Gardener
Date: 6/6/21
Time: 1 PM - 3 PM


Join Us!

The 2019 New Volunteer Training Class looking for evidence of pests on a leaf specimen.
The 2019 New Volunteer Training Class looking for evidence of pests on a leaf specimen.

We will be holding a remote learning New Volunteer Training class this fall (2021-2022). Three information sessions have been scheduled. Find more details here.


WEBINAR! What Could go Wrong in Your Summer Garden (& How to Fix it!)

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Mon 5/24/2021 6 - 7:30 pm

Join UC Master Gardener Monika Witte as she covers common vegetable growing problems and how to correct them. SIGN UP HERE for free!


Registration is Now Closed for Our June Vegetable Gardening for Beginners Course


Thanks to all who signed up for the June class! For those who didn't get in, this course is scheduled to repeat frequently throughout the coming year. Our next class is scheduled to begin July 10. For more information, visit the Growing Gardeners page.


WEBINAR! Container Gardening: Ornamental and Edible Plants in Small Spaces 


Tues 5/18/2021 at 6 pm: Sign up and here are more details. Co-hosted with partner Contra Costa County Library. Free! >> Livestreams at Contra Costa Library's Youtube!


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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Garden Talks Are Back!


After a long, dry spell, our popular garden talks are back! We'll be giving weekly Wednesday talks at Our Garden in Walnut Creek, and monthly Tuesday talks at Rivertown Demonstration Garden in Antioch.

Click on the talk below to see its description, or see all talks at once HERE

We're on YouTube, Facebook, Twitter and Instagram too!