Colorado Master Gardener
Cultivating Knowledge,
Growing Community
Connecting Colorado through gardening education
The Colorado Master Gardener program helps Coloradans grow thriving landscapes while strengthening local communities. Through CSU Extension, volunteers and experts provide education, resources, and hands-on support to gardeners of all skill levels. Explore how this statewide network cultivates sustainable practices, fosters lifelong learning, and brings horticultural science to life in every county.
Grow your gardening expertise
Gain access to CSU Extension’s research-based training and resources that teach practical, sustainable gardening techniques tailored to Colorado’s unique growing conditions.
Support local communities
Apply your skills to community projects, demonstration gardens, and educational events that make a lasting impact across Colorado’s counties.
Connect and keep learning
Join a statewide network of passionate gardeners and educators who share ideas, resources, and a commitment to cultivating a greener, more resilient future.
1,535
Master Gardener volunteers part of the program in 2025
100,432
Coloradans reached in 2025
46
Colorado counties participated in 2025
Featured Programs and Services
Explore garden and landscape programs designed to help you grow healthier plants, care for your yard sustainably, and cultivate thriving outdoor spaces across Colorado.
Garden & Landscape
Green School
Transform your approach to Colorado gardening with the Green School program from CSU Extension—an online, expert-led course designed for our unique soils, climates, and plants.
Garden & Landscape
Lawncheck
Lawncheck is an on-site, lawn consultation service for a fee. Service includes recommendations for improving your lawn and solving insect, disease and other lawn problems.
Garden & Landscape
Grow & Give
Join a unique program created to help educate home gardeners on how to grow in Colorado while connecting their backyard produce with Coloradans in need.
History of CMG
CMG 50th anniversary
Featured Stories
Explore inspiring stories from the Colorado Master Gardener program, highlighting decades of community impact, hands-on education, and horticultural excellence across Colorado.
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News from the Source
Master Gardeners, blind students grow together in unique garden
There are so many ways to enjoy a garden that don’t involve sight, and the students at the Colorado Center for the Blind in Littleton understand that better than most.
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news from the source
CSU’s Master Gardener Program: Sharing horticulture know-how for 50 years
For over 50 years, the Colorado State University Master Gardener program has provided communities across the state with trusted horticulture education and practical gardening support.