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

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.
Tap to Call

Master Gardener   Arrow divider image - marks separation between nested pages that are listed as breadcrumbs.


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.

Volunteers are in! Our helpdesk is open Monday – Friday from 9:00am – Noon and 1:30pm – 4:30pm. Please give us a call at 720-722-6935, email or stop by the office in Castle Rock.

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. The materials contained in presentations are the most up-to-date, research-based information from Colorado State University. Local Douglas County climate and garden conditions are also targeted.

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! See details below and contact Andie Wommack at the CSU Extension Office if you have further questions. Our office hours are 8:30 a.m. to 12:30 p.m. and 1:30 p.m. to 5:00 p.m., Monday through Friday.

Enrollment Options and Class Information

Colorado Master Gardener Volunteer

The Colorado Master Gardening (CMG) training program requires a fall application and interview followed by winter and spring training classes. Tuition for CMG Volunteer training in 2019 was $170 plus a commitment to complete at least 50 hours of volunteer work the first year.

Applications should become available in September. If you would like to be added to our notification list, please contact Andie Wommack.

As a volunteer, you’ll assist Douglas County Extension staff and fellow Colorado Master Gardeners in delivering research-based information about home gardening to Douglas County residents. To maintain your CMG status on a yearly basis, you’ll be required to pay nominal yearly dues and complete additional volunteer hours (typically 24 hours) and continuing education classes offered through CSU and the community.

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. Tuition without a volunteer commitment in 2019 was $530. Individuals who were not selected as CMG volunteers may enroll as Colorado Gardener Certificate students. Applications should become available in September. If you would like to be added to our notification list, please contact Andie Wommack.

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

CMG/CGC Classes

As an accepted CMG/CGC student, you’ll complete a curriculum that includes ten weeks (60 hours) of classroom instruction. Classes are held January through April through a combination of in-person (weekday 9AM-4PM with a lunch break) and online classes. We anticipate five in-person classes and five online classes for the 2019 program. Some variations may occur in the basic schedule to accommodate local needs. Contact the Douglas County Extension office for specific details.

View Training Schedule

Master Gardener Resources

Course Date/TimeTopicAdditional Information
Online TrainingExtension Master Gardener (EMG) Social Media Training Site – Learn how to communicate through Social MediaLearn More LEARNGrowing Squash, Cucumbers and Pumpkins with IPM for Home GardenersLearn More
Online Training"Pesticides, People, and Pollinators: Answers to tricky pesticide questions for Master Gardeners" Watch Here
Multiple DatesNative Plant Master (NPM) Course Foothills to Plains AreaRegistration Required
Multiple DatesNative Plant Master (NPM) Course Jefferson County Registration Required
4/27/2019 9:30AM - 11:00AMTagawa: How to Grow Ravishing RosesLearn More
4/27/2019 12:00PM - 1:15PMTagawa: Trees for Your XeriscapeLearn More
4/27/2019 2:00PM - 3:30PMTagawa: Colorado Native Trees & Shrubs with Scott SkogerboeLearn More
4/27/2019 9:00AM - 3:30PMDouglas County Garden SymposiumRegister Here
4/28/2019 1:00PM - 2:00PMTagawa: Planting Roses in Containers with 9NEWS Rob ProctorLearn More
5/3/2019 1:00PM - 2:30PMTagawa: Container Gardening for Pollinators & Hummingbirds with 9NEWS Rob ProctorLearn More
5/3/2019 5:00PM - 8:00PM & 5/4/2019 8:00AM - 5:00PMBeekeeping on the Front RangeLearn More
5/4/2019 8:30AM - 4:30PMDouglas County Noxious Weed SymposiumLearn More
5/4/2019 8:00AM - 12:00PMSouth Suburban Parks & Recreation
Horticultural Rose Pruning
5/4/2019 10:00AM - 11:00AMTagawa: Growing Floral Arrangements in Your Landscape Learn More
5/4/2019 10:00AM Hudson Gardens: Container Gardening: Tips & TrickRegister Here
5/4/2019 12:00PM - 1:15PMTagawa: Annuals for Your XeriscapeLearn More
5/4/2019 2:00PM - 3:30PMTagawa: Tomato SuccessLearn More
5/5/2019 1:00PM - 2:30PMTagawa: Shady Solutions for Patios & Balconies with 9NEWS Rob ProctorLearn More
5/9/2019 6:00PMHudson Gardens: Lawn Care for BeginnersRegister Here
5/17/2019 1:00PM - 2:30PMTagawa: Succulent Savvy with 9NEWS Rob ProctorLearn More
5/18/2019 12:00PM - 1:15PMTagawa: Trees & Shrubs for Small SpacesLearn More
5/18/2019 2:00PM - 3:00PMTagawa: Meet the Plants: Winners from the CSU Trial GardensLearn More
5/19/2019 1:00PM - 2:30PMTagawa: The Scented Garden with 9NEWS Rob Proctor Learn More
5/25/2019 8:00AMHudson Gardens: Attracting Bees to Your GardenRegister Here

View the 2019 CMG Apprentice training schedule

View Training Schedule