UC Master Gardener volunteers staff a Helpline serving Mariposa County, including Greeley Hill, Coulterville and Lake Don Pedro. Our volunteer staff promotes successful and sustainable gardening practices by providing home gardeners with research-based information from the University of California and other academic or government institutions. The staff has access to an extensive library, University of California Agricultural Advisors, university internet sites and a microscope for researching home gardening problems. Home gardeners can bring their questions or specimens in or contact the Helpline by phone or email.
Office Location
UC Cooperative Extension Office,
5009 Fairgrounds Road
Phone: (209) 966-7078
Email: mgmariposa@ucdavis.edu
Helpline Hours
April through September:
Tuesdays 9:00 am to Noon
Thursdays 2:00 pm to 5:00 pm
October through March:
Thursdays 2:00 pm to 5:00 pm
Note: Our Helpline is monitored by Master Gardener volunteers. At times, there may be conflicts that require volunteers to switch days or times. Samples may still be dropped off during normal business hours and will be reviewed and responded to as soon as possible.
Ask a Master Gardener Online
Submit your question through the UC Master Gardener eClinic. Your questions will be forwarded automatically to our Helpline volunteers.