Colorado State University

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Visit our Colorado State Extension office for more news, tools and resources.

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Colorado State University Extension offices like the one in Jefferson County bring the research and resources of the university within easy reach to our community.

Jefferson County Colorado Master Gardener Program

Jefferson County Colorado Master Gardener Program

Colorado Master Gardener Applications have closed for the 2025 year.

Please review the required dates of the Jefferson County program as you consider applying.

An apprentice year is a commitment of time, and is full of opportunity to learn the program, projects and community. Our staff, volunteers, and apprentice mentors are here to support you! We are excited for your interest and are available to answer questions at cmg_admin@jeffco.us.

Additional information on the Colorado Master Gardener (CMG) program is available at the State Master Gardener Program webpage. If you are interested in learning more about gardening without committing to the volunteer portion of the program, you can still follow the Green School curriculum led from October through March by CSU horticultural professionals.

See our projects

Jefferson County CMG’s applaud our director, Jeni Carter, during an autumn appreciation event.

Jefferson County CMG’s Cherie Luke and Pat Korbel showcase CSU Extension at the Evergreen Farmers’ Market.

Some year-end produce found during fall clean-up at our Horticulture Demonstration Garden.

CMG’s work together to differentiate underground storage organs at our Winter Workshop.

CMG’s John Baltich and Jill Knussmann assess one of three bee hives near our Horticulture Demonstration Garden.

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Colorado State University Extension is an equal opportunity provider. Colorado State University does not discriminate on the basis of disability and is committed to providing reasonable accommodations. CSU’s Office of Engagement and Extension ensures meaningful access and equal opportunities to participate to individuals whose first language is not English, and resources.

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Colorado State University Extension es un proveedor que ofrece igualdad de oportunidades. Colorado State University no discrimina por motivos de discapacidad y se compromete a proporcionar adaptaciones razonables. | Office of Engagement and Extension de CSU garantiza acceso significativo e igualdad de oportunidades para participar a las personas quienes su primer idioma no es el inglés.

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Contact Us

Phone: (303) 271-6620

Hours: Tuesday – Friday (8:00am – 5:00pm)

Address: 15200 W 6th Ave Frontage Rd – Unit C, Golden, CO 80401