The Colorado Master Gardener Program

Applications Open

The Colorado Master Gardener/Colorado Gardener Certificate programs are open for applications beginning September 14, 2015. The Colorado Master Gardener program requires 50 hours of volunteer time in exchange for a nominal fee plus the 10 week course, which begins in January 2016. The Colorado Gardener Certificate program does not require any volunteer time, but has a higher fee for the same training. Contact your county CSU Extension office for more details. Note that all counties do not offer this program. Please click here for a list of participating counties.

Here’s how one county Master Gardener program (Jefferson) operates.

Colorado Master Gardenerssm are CSU Extension volunteers trained in horticulture and work out of the local county extension office. We extend research based education throughout Colorado to foster successful gardeners, develop partnerships and build stronger communities.

We may do this through:

  • Educational workshops
  • Speakers' bureau
  • Farmer's market, garden show and fair booths
  • Answering questions through email, on the phone or in person
  • Mentoring community and school gardens
  • Mass media such as blogs, newspaper, radio, podcasts
  • Identifying plant pest problems
  • Demonstration and research gardens

Contact a CMG Volunteer about your yard and garden questions.

Search online yard and garden publications.

Colorado Master Gardener Impacts

In 2014, thirty-two Colorado counties participated in the Colorado Master Gardener volunteer program. Learn more.

CSU Extension Certified Gardener Program Offering

If you’re interested in the Colorado Master Gardener program, but don’t have the time available during the day to attend the classes or do the volunteering component, you may be interested in the online Certified Gardener program. Designed to be flexible and structured around your needs, the certified gardener training allows you to earn digital badges by taking individual courses, bundling courses, or completing the full program. Whether you’re a backyard gardener, interested in landscape pruning or home composting, or are a green industry professional, the CSU Extension Certified Gardener Program can be tailored to your goals.

Although it is based on the Colorado Master GardenerSM curriculum, Certified Gardener is different in a few key areas:

  • Certified Gardener does not have a required volunteer component.
  • Because the Certified Gardener program is completely online, you are not bound by seasonality. Courses are offered at various times throughout the year, and you can register and take only the ones you want when it fits your schedule.
  • The Certified Gardener program offers badges in specific areas that may be taken individually or as a bundle. In contrast, the Colorado Master Gardener program covers all topic areas in a face-to-face format without the ability to register for only specific courses.
  • Learn more about the Certified Gardener program here.

Colorado Garden Foundation Awards Grant to Colorado Master Gardener Program

In April 2015 Colorado Garden Foundation (CGF) awarded a $5000 grant to the Colorado Master Gardener program. The monies will be used to support purchase of educational materials and supplies. Learn more.

Emerald Ash Borer in Colorado

The following resources provide information on the identification and management of Emerald Ash Borer in Colorado:

CO-Hort is CSU Extension's Gardening Blog

CO-Hort is CSU Extension's gardening blog. It is designed for green industry personnel, Colorado Master Gardener volunteers, and the gardening public. Enjoy the timely information for CSU Horticultural Agents and Specialists. The URL is

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