University of California
Master Gardeners • Napa
Help Desk
UC Master Gardeners of Napa County provide free home gardening advice. Visit, call or complete the online diagnosis form below for assistance.
Monday, Wednesday and Friday, 9 a.m. to 12 p.m.
UC Cooperative Extension
1710 Soscol Avenue, Suite 4, Napa
(707) 253-4143
Map & Directions
Online Diagnosis Form
Please fill out the diagnosis form below and submit. If you don't know an answer, you may leave it blank. A Master Gardener volunteer will contact you once you have submitted the form.
