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Master Gardener Program

Coronavirus (COVID-19)

Due to recent health concerns with the Coronavirus (COVID-19), our office will be closed to in-person access for the time being. We are still working and would love to talk to you.  Please call us at 209-966-2417 or email smace@ucanr.edu.  If you have a gardening question, feel free to call our helpline at 209-966-7078 or email us at mgmariposa@ucdavis.edu.  We will be checking messages regularly and will get back to you as soon as possible. Our helpline office is currently closed to drop-ins and cannot accept samples at this time. Thank you for your patience. 

Please check the UC Master Gardeners of Mariposa County Facebook page for more information on gardening in the Southern Sierra Foothills. 

Become a Master Gardener!

Become a Master Gardener

For more information, contact Sheri Mace at

smace@ucanr.edu or 209-966-2417. 

2022 MG Application

NOTICE: Seeds from China

Unsolicited seeds from China have been arriving in the United States. To ensure that those seeds do not pose a threat to US and California Agriculture, the USDA and the California Department of Food and Agriculture are collecting the seeds with their packaging. If you receive a seed packet from China: 

  • DO NOT plant it or open it!
  • Write your name, address, email and phone number on a piece of paper
  • If you accidentally opened the package, place the packaging and all seeds in a zip lock bag. 
  • Drop off your seed packet with your name, address, phone number and email address to the UC Cooperative Extension Office at 5009 Fairgrounds Rd., Mariposa CA 95338. We would be happy to send them in for you.

Please feel free to call us at 209-966-2417 with any questions. 

Growing Garlic

Fall and winter is the time to let your garlic grow to be harvested in early to mid-summer. Although the weather is getting cold here in the foothills, we often have periods of warmer weather, so if you missed your November planting of garlic, you still have an opportunity. Here are some great resources for you from the UC Master Gardeners of Mariposa County.

Growing Garlic

Lessons from the School Garden

Join the UC Master Gardeners of Mariposa County and Wasuma Elementary School for "Lessons in the Garden." These short lessons for K-8 students are a welcome addition to any school garden program. 


Over the Garden Fence
How Can We Help?

Do you need help with your garden?  Have a pest problem?  Curious about what will grow well in our region? Contact our Helpline.

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Master Gardener Calendar of Events
Event Name Date

Mariposa Creek Native Plant Demonstration Garden - Photo Courtesy of Jim and Betty Johnson
Mariposa Creek Native Plant Demonstration Garden - Photo Courtesy of Jim and Betty Johnson