Central Oregon Horticulture Program

The Central Oregon Horticulture Program is responsible for providing education to the residents and commercial green industry of Crook, Deschutes, and Jefferson Counties. We provide this education through seminars, workshops, publications and several other ways.

We also serve as an outlet for all of your gardening questions. You can either call or visit our plant clinic.  We will assist you in identifying your weed, disease, and insect problems and recommend safe and research- based management for these issues.

The Horticulture staff and local OSU Master Gardeners give presentations on regional garden topics throughout the year. We also have several garden publications available to you at little or no cost. We provide annual OSU Master Gardener training in the tri-county area for those interested in a great volunteer opportunity.

The High Desert Gardening Newsletter is published 5 times a year. A sample copy is available for you to view.  The cost is $10 per year for a color, mailed copy and a one-time set-up fee of $5 to receive it by email. To subscribe, print and mail in this order form.

For more information, please contact:

Amy Jo Detweiler, Associate Professor
OSU Horticulture Faculty for Central Oregon
Telephone: 541-548-6088 X 7951
Email: Amy Jo Detweiler

Deschutes County Extension Service
Oregon State University
3893 SW Airport Way
Redmond, Oregon 97756-8697
Telephone: 541-548-6088
Fax: 541-548-8919

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Oregon State University Extension Service offers educational programs, activities, and materials without discrimination based on age, color, disability, gender identity or expression, genetic information, marital status, national origin, race, religion, sex, sexual orientation, or veteran’s status. Oregon State University Extension Service is an Equal Opportunity Employer.





Central Oregon Master Gardener Program

Let our OSU Master Gardeners help you with your
gardening questions or bring your plant samples to
the Plant Clinic.

Information & Forms

The deadline for the 2017 Master Gardener program was January 16th. Applications are available in the late fall for the following year's training.  

Send me an application!

C.O. Master Gardener Program Information

Request for Speaker/Service Form

OSU Master Gardener Program -state website


For current volunteers only

Publication: An Introduction to Being a Master Gardener Volunteer         

Master Gardener Transfer Form

Event Participation Form

OSU Online Hour Reporting   

Shiftboard Online Scheduling

Continuing Education classes for Veterans

Central Oregon Master Gardener Association (COMGA)

2017 International Master Gardener Conference

The OSU Master Gardener™ Program in Central Oregon

The OSU Master Gardener™ program is entering its 37th consecutive year, serving Crook, Deschutes, and Jefferson Counties. Over the years, this program has trained hundreds of volunteers and they, in turn, have reached thousands of clients within our communities.

The program targets individuals interested in learning and sharing research-based gardening information. Currently, the program has over 90 active volunteers who find the program educational, fun and very rewarding.

OSU Master Gardener™ Online Training

The OSU Master Gardener™ Online Training offers the opportunity to become a certified Master Gardener and to earn the Master Gardener badge. In addition to the basic training course, participants are required to put in 40–70 hours of volunteer work at their local OSU Extension office.

"Certified OSU Master Gardeners are highly trained volunteers who share the art and science of sustainable gardening and OSU resources in home horticulture with the citizens of Oregon". More than 3,500 people across the state have become Master Gardeners through the OSU program.

Topics included in the Master Gardener basic training course include botany and entomology; integrated pest management and pesticide safety; soils, fertilizers and composting; ornamental, herbaceous plants and woody plants; vegetable, indoor and container gardening; sustainable landscaping; and plant pathology.

Registration for this class is online at: https://pace.oregonstate.edu/catalog/master-gardener-online# 

The Master Gardener online course is offered by the OSU Extended Campus (Ecampus) and Extension Service.