UC Master Gardeners, Santa Clara County, CA
University of California
UC Master Gardeners, Santa Clara County, CA

Ask a Gardening Question

Special Note: the UCCE office is closed until further notice. The Help Desk is still responding to questions submitted through the website and voice messages left at the number below (however, there will be no caller ID). No walk-in service is available.

Before Contacting Us

Please review our plant diagnosis questions before contacting us. It will help you gather information so we can better assist you. For many issues, the UC Integrated Pest Management website may give you the answers you need. It’s a highly recommended tool.

Contact Options

Choose how you would like to contact us:


Use this form to submit a gardening question. We'll respond via email unless requested otherwise.

Telephone or In Person

Reach us directly. If we're on the phone or if it's outside office hours, you can leave a message. You can also bring in plant or pest samples during office hours—please call before coming in. We try to answer questions right away, but sometimes we need to conduct research and get back to you.

Note: we're closed on Santa Clara County holidays.

Monday–Friday Friday (Feb–Nov)

9:30 am–12:30 pm 
Closed for Santa Clara County holidays
1553 Berger Drive, San Jose
Visiting details

1–4 pm
650-329-1356 x205
Closed DecJan

1431 Waverley St, Palo Alto
Visiting details

At Events

You can also talk with UC Master Gardeners at one of our many talks, workshops, courses, or community

Webmaster Email: webmaster-mgsantaclara@ucanr.edu