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

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The Extension office provides assistance and programs for the community in five main areas: Agriculture, Horticulture, Family & Consumer Science, Natural Resources and 4-H Youth Programs.

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Horticultural Services

Due to the COVID 19 outbreak, Boulder County has closed our offices to the general public. CSU Extension staff will be working remotely at this time. If you have questions about HOA or Green Industry site visits, please contact Deryn Davidson by email ***Plant and insect sample ID and diagnostic services are currently suspended. We apologize for the inconvenience.***

Ask a Master Gardener

Our volunteers are out of the office, but are still able to help you with your home gardening questions by email! Send us your detailed questions and any relevant photos of the problem plant to us at

We’re here to help, even when we’re working remotely!


Your information source for gardening and horticulture related programs and classes through Boulder County Extension.

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Native Plant Master
Learn about the values and characteristics of Colorado’s native plant species, as well as issues surrounding non-native, invasive plants.
Harvest of peppers
Community Garden
There is a community garden located at the Boulder County Extension office.  The garden consists of several dozen plots that can be rented by community members who are in need of a place to garden.
Demo Garden
Demonstration Gardens
The Boulder County Extension office is home to several demonstration gardens. Visit the Plant Select, Rock, Hell Strip, Rain Garden, Grass Plots and Native Gardens. All of the gardens are located around the Natural Resource Building on Boulder County’s Fairgrounds in Longmont, Colorado.
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Boulder County Master Gardener Program
The Colorado Master Gardener program has played an active role in the education of Boulder County gardeners for more than 35 years.
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Horticulture Services
Dig in! Get green industry and gardening help from your local Boulder County Extension office. We offer consultation services including site visits, plant ID, disease diagnosis, and garden problem solving help.

PlantTalk Colorado

Planttalk Colorado™ is sponsored by Colorado State University Extension, Denver Botanic Gardens, and the Green Industries of Colorado. Link to Planttalk for information on over 500 horticulture topics from Colorado horticulturists and professionals.

For additional information on gardening, see Extension Publications.

Timely PlantTalk Videos

Care for Houseplants by LuAnn Akin and Dee of Tagawa Gardens. Learn how to care for your houseplants from the experts!

How to Make a Terrarium by LuAnn Akin and Dee of Tagawa Gardens. Terrariums are a fun way to bring the tropics indoors to Colorado.

Bird Feeding Tips for Colorado by LuAnn Akin and Christy of Tagawa Gardens. Learn bird feeding tips to keep birds healthy and happy!

Winter Rose Bush Care by Luan Akin and certified arborist and Tagawa Nursery staff member Mike Landers. Learn how to use rose collars to protect your roses from harsh winter conditions, plus other tips for helping your rose bushes through the winter. by Luan Akin and certified arborist and Tagawa Nursery staff member Mike Landers.

Winter Watering Trees and Shrubs by Luan Akin and certified arborist and Tagawa Nursery staff member Mike Landers. Colorado winters require winter watering of trees and shrubs to stay healthy.

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.