UCCE Master Gardener Program of Riverside County
University of California
UCCE Master Gardener Program of Riverside County

Ask a Master Gardener


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Get help and advice with your garden! Master Gardeners are here to answer your plant, tree, and gardening questions for gardens throughout Riverside County and the Desert areas.


Western Riverside County:

  • Email your question to:
    Include as much detail as possible and any photos that illustrate your problem/question.
  • Call the Master Gardener Helpline:
    Monday through Friday 9am - 12 noon
    (951) 683-6491 ext. 231
    Speak to a Master Gardener  or leave a message and we'll call you back.
  • Walk-ins welcome:
    Monday through Friday 9am - 12 noon
    21150 Box Springs Rd., Ste. 202, Moreno Valley, CA  92557 

 Desert (Indio):

  • Email your question to:
    nclude as much detail as possible and any photos that illustrate your problem/question. 
  • Call the Master Gardener Helpline at 
    (760) 342-6437 to l
    eave a message.

UC Master Gardener Resources

The UC Master Gardener Program is designed share science-based information with the public.  In addition to our many Volunteers, the following resources provide answers to many, if not most, of your questions.

California Garden Web

The UC Master Gardener Program designed the California Garden Web to serve as a portal to organize and extend the University of California's vast collection of research-based information about gardening to the public. The California Garden Web focuses on sustainable gardening practices.

Integrated Pest Management Program

Integrated pest management, or IPM, is a process you can use to solve pest problems while minimizing risks to people and the environment. IPM can be used to manage all kinds of pests anywhere–in urban, agricultural, and wildland or natural areas.

California Backyard Orchard

When a home orchard is based on an understanding that it is, in fact, a living expression of genetics interacting with soils, weather, tree spacing, pests, and many other factors, then the outcome will likely be one of success.

Safe and Poisonous Plants

Information on this website is about plants poisonous to people. Do not use the plant lists on this site to learn about safe or toxic plants for animals. Some links are provided on plants poisonous to animals.

Additional Internet resource links are listed on the Internet Resources page

Webmaster Email: rmolaiz@ucanr.edu