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Interested in Volunteering? Become a UC Master Gardener in Contra Costa County


We will be recruiting for the next UC Master Gardener volunteer class in May or June of 2022.

Scroll to the bottom of this page and click the "Open Survey" button to sign up to be notified about our information sessions for the Class of 2023.


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.


Volunteers for the UC Master Gardener Program of Contra Costa County are:

  • Residents of Contra Costa County who have been trained to educate the general public on science-based sustainable horticulture practices.
  • Part of the University of California Cooperative Extension, functioning as a link between the University and the residents of Contra Costa County.
  • Committed to extending best practices on home horticulture, pest management, and sustainable landscaping throughout the county.


Typically, 25-35 people are selected to train as new UC Master Gardener Program volunteers.  Qualified candidates are:

  • Interested in learning University of California research-based horticultural practices in to bring that knowledge to their community.
  • Committed to creating a sustainable environment throughout the county.
  • Passionate about volunteering with our organization.



Applicants do not have to be gardening experts to become UC Master Gardener Program volunteers.  Successful applicants are trained in University of California best practices.

  • (Subject to change due to COVID-19 impacts) Training begins in the fall and continues for 17 weekly sessions. Each session is six hours long and includes both lectures and hands-on activities.  Weekly reading and home study assignments are also required.
  • Classes are taught by University of California instructors as well as outside experts.
  • Topics include Soils, Botany, Irrigation, Edible Gardening, Landscape Trees, Plant Diseases, and Integrated Pest Management and much more.


After training, new UC Master Gardeners are ready to volunteer on our many projects:

  • Help Desk
  • Ask A Master Gardener tables
  • Growing Gardeners
  • School Gardens
  • Demonstration gardens in East, Central and West County
  • Speakers Bureau
  • Community Gardens
  • Communications
  • Plant Sales


People interested in applying to the UC Master Gardener Program must first attend an information session to:

  • Learn more about the Contra Costa program and how it serves the community.
  • Participate in a conversation with UC Master Gardeners to explore your interests and experience.
  • Receive this year’s application along with instructions on how to apply to the training class.


CoCoMG 2022-2023 Training Program Interest

Request notification when registration for 2022-23 Information Sessions opens.  You must be a resident of Contra Costa County to participate.

Open Survey