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

Close Icon
Welcome to the CSU Extension Office in Douglas County. Our goal is to assist you with any questions you may have whether it is about gardening, wildlife, 4-H or any other needs.

Colorado Master Gardener   arrow


Douglas County Master Gardeners provide useful information to help your gardening efforts all year long. Through the Douglas County Extension Office, trained volunteers are available to answer horticulture questions about vegetable gardening, flowers, trees, shrubs, lawns, pruning, watering, plant disease and diagnosis, insect problems, composting, and environmental concerns.

Our volunteer Master Gardeners are now on winter help desk hours.  The winter help desk hours are answered by email only.  Please email if you have any questions.

Contact a Master Gardener  

Douglas County Master Gardeners are also available to give talks to community groups on a variety of gardening topics. We are available to speak on flower or vegetable gardening, landscaping, xeriscaping, houseplant care, turf management, insect and weed control, and other home horticulture subjects with particular emphasis on Douglas County–Where ever you are, we’re local! The materials contained in presentations are the most up-to-date, research-based information from Colorado State University.

Become a Master Gardener

Colorado County Master Gardener Enrollment

If you are a Douglas County resident interested in gardening, educational outreach, and volunteering this program may be a great fit for you! The 2020 Application period has closed; applications for the 2021 season will be released this fall!

Check out our state website for more detailed information on the Colorado Master Gardener Program.

Class Information

Colorado Master Gardener Apprentice and Colorado Gardener Certificate classes have begun!

View Training Schedule

Our program’s training includes both in-person and online classes offered through CSU Online. 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, in-class activities, and lectures. You will be expected to attend 80% of the classes and pass the final exam (open book, open note, researching encouraged) with a 75% or better.

Colorado Gardener Certificate Student

Individuals interested in completing Master Gardener training without a volunteer commitment may enroll for the coursework under the Colorado Gardener Certificate, CGC, enrollment option. The Colorado Gardener Certificate program requires a fall application followed by winter and spring training classes.  Individuals who were not selected as CMG volunteers may enroll as Colorado Gardener Certificate students. Applications for 2021 will be available in fall 2020. If you would like to be added to our notification list, please contact the CSU Extension Office.

CMG/CGC Certification

Students who are accepted into the Colorado Master Gardener program and complete the required volunteer commitment, become Colorado Master Gardeners. The title Colorado Master Gardener is a registered service mark of Colorado State University Extension. It is used to identify volunteers serving in official CSU Extension activities. It may not be used to infer credentials, imply endorsement of a private business, or used on marketing materials of a business. Students who choose the Colorado Gardener Certificate option will not become Colorado Master Gardeners upon completion of the training.

Colorado Master Gardener Volunteers and Colorado Gardener Certificate students both receive the Colorado Gardener Certificate, which may be displayed in a place of business and used in business marketing.

Learn More  

Master Gardener Resources

Course Date/TimeTopicAdditional Information
Online Training"Pesticides, People, and Pollinators: Answers to tricky pesticide questions for Master Gardeners" Watch Here
Online Training"What's 'Sap' With Our Trees" Watch Here
Multiple DatesNative Plant Master (NPM) Course Foothills to Plains AreaRegistration Required
Multiple DatesNative Plant Master (NPM) Course Jefferson County Registration Required
Online TrainingExtension Master Gardener (EMG) Social Media Training Site – Learn how to communicate through Social MediaWatch Here LEARN"Weed Management in the Garden & Landscape: Understanding Herbicides" Watch Here LEARNGrowing Squash, Cucumbers and Pumpkins with IPM for Home GardenersWatch Here
Saturday, March 7; 2pm-3pmEarly Start: Cold Season GardeningTagawa Gardens
7711 South Parker Road
Centennial CO 80016
Saturday, March 7; 12:00-1:15pmTrees for Your XeriscapeTagawa Gardens
7711 South Parker Road
Centennial CO 80016
Saturday, March 7; 9am-1:30pmDenver Rose SocietySymROSEiumDenver Botanic Gardens admission req'd, up to 3 CE hours.
Saturday, March 14, 2020
Douglas County Noxious Weed SymposiumDouglas County Fairgrounds Event Center, Castle Rock
Sunday, March 22
Choosing the Right Plant for the Right LocationsTagawa Gardens
7711 South Parker Road
Centennial CO 80016
Sunday, March 29
Combating Japanese BeetleTagawa Gardens
7711 South Parker Road
Centennial CO 80016
Wednesday, April 15 7pm Fire and Water in Douglas CountyCherokee Ranch and Castle

CMG Renewal

CMG Renewal paperwork and payment is due by December 5th.  After that a $10 late fee will be applied until December 31st, 2020.  After December 31st, 2020 no renewals will be accepted.  Dues can be paid online as well.

Renew Online  Online Payment