University of California
Master Gardeners San Luis Obispo
Visit Us
Plant or insect samples may be brought into any of our offices for diagnosis. Volunteers work the Helpline on a weekly schedule.
San Luis Obispo: 781-5939
(Volunteers available Mondays and Thursdays 1–5 PM)
University of California Cooperative Extension
2156 Sierra Way, Suite C
San Luis Obispo, CA 93401
Arroyo Grande: 473-7190
(Volunteers available Wednesday 10 AM to noon)
County Agriculture Commissioner's Building
810 West Branch Street
Arroyo Grande, CA 93420
Templeton: 434-4105
(Volunteers available Wednesday 9 AM to noon)
County Agriculture Commissioner's Building
350 N. Main St., Suite B
Templeton, CA 93465