Contact Us
Call a Helpline:
Arroyo Grande (805) 473-7190
San Luis Obispo (805) 781-5939
Templeton (805) 434-4105
Send us an email: anrmgslo@ucanr.edu
Follow us on social media:
Helpline
Ask a Master Gardener
Master Gardener Helpline volunteers are available to answer your gardening questions and evaluate your specimens. We use science-based resources and provide you with evidence-based research and advice.
Send Us an Email
Call or Visit in Person
San Luis Obispo: (805) 781-5939
University of California Cooperative Extension
2156 Sierra Way, Suite C
San Luis Obispo, CA 93401
Volunteers available Mondays and Thursdays 1–5 PM
Front office is open and can accept samples 8:00 AM to 5:00 PM Monday through Friday.
Arroyo Grande: (805) 473-7190
County Agriculture Commissioner's Building
810 West Branch Street
Arroyo Grande, CA 93420
Volunteers available Wednesday 10 AM to noon
Front office is open and can accept samples 8:00 AM to 2:30 PM Monday through Friday.
Templeton: (805) 434-4105
County Agriculture Commissioner's Building
350 N. Main St., Suite B
Templeton, CA 93465
Volunteers available Wednesday 9:00 AM to noon.
Front office is open and can accept samples 12:00 PM to 2:30 PM Monday through Friday.
Helpline Tips
Tips for best solving your questions:
- An attached photo is helpful in diagnosing your plant problem.
- Take close-ups of the surfaces of the leaves, and include a photograph of the entire tree or plant.
- Flowers, shapes of leaves and the place where the leaves attach to the stem are helpful in plant identification.
- Include your location in the county, as problems vary from area to area.
- Send photos of insects, top and underside, if possible.