We’re looking for volunteers interested in education and outreach using research-based horticulture information. As an Extension Master Gardener, you’ll be a CSU Extension volunteer giving back in your local community.

>> Check out our Mission & Vision, History & Annual Reports.

Newly accepted volunteers begin as Apprentices. This means you’re in-training to become a Extension Master Gardener. We provide 60 hours of core training that occur through hybrid instruction: online, live webinars (also recorded) and in-person when possible. The Green School Full Course is also know as our Master Gardener training.

Following training, apprentices are encouraged to engage in local projects which vary widely. The volunteer commitment is 50 hours your first year after completing Green School. There is also a two-year Apprentice option that allows 60-hours to be completed over 2 years.

If you’re simply interested in hobby gardening (hey, we love it too!), we have other great avenues for you to consider including:

• Green School which is offered as a full course (14 classes) or short course bundles (5 classes organized around a theme). It’s all Colorado-specific horticulture training without the volunteer commitment.
• Online Gardening Classes offered exclusively through CSU Online where you can earn a digital badge as a Certified Gardener or simply take one of 17 self-paced courses without an ongoing training commitment.

Check out the counties currently offering the Colorado Master Gardener program. You’re encouraged to connect with a program in the county where you live and apply online during the application period. The application period to apply to become a Colorado Master Gardener Apprentice is in August each year. Most, but not all counties accept CMG applications each year.

If you’re moving here from another state where you served as an Extension Master Gardener, we welcome you to our program but do require that you complete our application process and training. Colorado can be a tough place to garden – we think you’ll appreciate the education you receive through our Colorado-specific training.

If you’ve decided you’re interested in plant education and outreach and you’d like to volunteer in your local community then it’s time to apply! Follow these steps:

1. Check with your local county to see if they have a Colorado Master Gardener program.
2. Read our Colorado Master Gardener application information
3. Apply online in August each year (CMG application window is currently closed.)
4. Complete Background Screening. CSU Extension requires background screening for all volunteers. All applicants must pass background screening before being accepted into a Master Gardener volunteer program.

After applying, passing a background screening, and being accepted into a Master Gardener volunteer program in your home county, Colorado Master Gardener Apprentices must complete CSU Extension’s Green School Full Course. Regardless of your location, all Colorado State Extension Master Gardeners (CMGs) receive in-depth horticulture training provided by University faculty, staff, and specialists. Training is critical to ensure that all volunteers have access to the information necessary to support our mission.

Green School offers flexible, remote and hybrid training options. This includes self-paced online classes and online review sessions with subject matter experts from CSU. Combined with optional in-person activities and hands-on labs (varies by local county programs), you’ll have the flexibility to learn at home and practice with fellow volunteers.

GREEN SCHOOL TRAINING FEES & COURSE MATERIALS

2024-2025 GREEN SCHOOL FULL COURSE SCHEDULE

Courses are specific to Colorado’s climate, soil, environment, insects, wildlife, and plants. Training is a big commitment and includes reading (online, no text required), homework, quizzes, in-class activities, lectures, and a final exam.

Register for Green School: We’ll send you a registration link if accepted into the program. If you are not accepted and still want to completed Green School, we’ll send you a link for the early-bird registration rate.

Want to know more? See the Green School Training information page

Colorado Master Gardener Volunteer’s audience is exclusively home gardeners. Colorado Master Gardeners support gardening success and provide home gardeners with information/education on topics including landscape plants, turfgrass, and trees as well as soils, pests, house plants, vegetable gardens and backyard greenhouses.

Types of volunteer service can include answering phone calls and emails through a Master Gardener Helpdesk, diagnosing plant problems, teaching gardening classes, writing newspaper and website articles, and supporting community gardens and farmers markets. CSU Extension strives to provide meaningful volunteer opportunities that positively impact people and communities.

Colorado State Extension Master Gardeners are active across the state and their impacts are impressive. We have a user-friendly reporting system so that logging hours, reporting outreach and signing up for projects is simple. We’re required to report our efforts locally and to the state annually – we want to show off the good work our volunteers are doing! Check out our Annual Reports to read more.

After we’ve put our outdoor gardens to bed, we start our annual renewal process for all Master Gardeners. After completing CSU’s Green School and fulfilling the CMG Apprentice volunteer commitment of 50 or 60 hours, continuing CMGs must contribute at least 24 hours of volunteer service annually and complete 12 continuing education hours (often provided by CSU in your local county or online). CMGs in good standing complete renewal paperwork and contribute annual dues (typically less than $35) to recommit for the upcoming year.