Contact Us

UC Master Gardener Helpline & Office Locations

Have specific garden questions? Call one of the numbers below or send us an email

Our trained volunteers can help diagnose plant problems and identify pests or weeds using science-based resources.

Email us: anrmgslo@ucanr.edu
Hablamos español

To help us best answer your questions:
  • Include your location in the county.
  • Send clear photos of the plant or problem.
  • For plant ID, include the whole plant, leaf shape, flowers, and where leaves attach to the stem.
  • For pests, send photos of the insect (top and bottom) if possible.

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San Luis Obispo

(805) 781-5939

University of California Cooperative Extension Office

2156 Sierra Way, Suite C, San Luis Obispo, CA 93401

Volunteers available: Mondays and Thursdays, 1:00–5:00 PM

Front office hours: Monday–Friday, 8:00 AM–5:00 PM (can accept samples)

Arroyo Grande

(805) 473-7190

San Luis Obispo County Agriculture Dept.

810 West Branch Street, Arroyo Grande, CA 93420

Volunteers available: Wednesdays, 10:00 AM–12:00 PM

Front office hours: Monday–Friday, 8:00 AM–2:30 PM (can accept samples)

Templeton

(805) 434-4105

San Luis Obispo County Agriculture Dept.

350 N. Main St., Suite B, Templeton, CA 93465

Volunteers available: Wednesdays, 9:00 AM–12:00 PM

Front office hours: Monday–Friday, 12:00 PM–2:30 PM (can accept samples)


Source URL: https://oc4h.ucanr.edu/site/uc-master-gardeners-san-luis-obispo-county/contact-us