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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.

Horticulture Services   arrow

Do you have a garden, bug, or landscape question? We’re here to help!

We specialize in plants, insects/arachnids, and horticultural problems in the Front Range region of Colorado. We receive questions from home gardeners and plant enthusiasts, as well as professionals including arborists, nurseries, garden centers, and greenhouse producers. We also serve landscape professionals and turf specialists who maintain the grounds for HOA’s, golf courses, private lawns, sod growers, and pest control companies. If you have a plant, insect, tree, or lawn problem, we are your local resource to find solutions for healthier landscapes, gardens, and plants!

To explore our in-person diagnostic services, click here.

If you’re interested in a CSU Lawncheck, click here.

Educational Outreach

Are you interested in having our Horticulture Specialist or Master Gardeners come teach on a topic or lead a workshop? Fill out our contact form, here – Jefferson County Horticulture Request Form (

Online Resources

Online Publications – CSU Extension is chock-full of online publications related to all things horticulture, not limited to topics such as: Vegetables and Herbs, Trees and Shrubs, Water-wise Landscaping/Xeriscaping, and Soils. Publications vary in level of detail – PlantTalk‘s provide the simplest level of detail, whereas GardenNotes and Fact Sheets provide more in-depth information. Feel free to explore the various publications that we offer!

Ask an Expert – Get personalized answers to your horticultural questions from Cooperative Extension staff and volunteers across the country.

CO-Horts Blog – Stay up-to-date on advice and observations from our CSU Extension Horticulture Agents and Specialists.

Jeffco Master Gardeners Blog – Interested in what our local CMG’s have to say? Check out their blog for horticultural tips, information, and updates!

Keeping ahead of COVID-19

This rapidly evolving coronavirus (COVID-19) has imposed an unsettling, fluid situation upon our community and its businesses. While the team here still aims to maintain a “business as usual” approach, we are making a number of significant changes to our operations to account for a situation that is far from normal.