Missed Green School Full Course Registration? Sign up to receive email reminders when registration opens: 2025 Green School Interested List

Gardening here is different. Learn more, grow more.

Colorado gardening and landscaping takes grit…. and knowledge of our unique soils, climates, and plants. CSU Extension has been helping people grow in our great state for over 150 years. Join us online to learn from our Colorado horticulture experts through our flexible Green School program.

GREEN SCHOOL TRAINING COURSES & OPTIONS

We have a certifying FULL COURSE option and multiple SHORT COURSE options to meet anyone’s needs. Regardless of the course, you’ll receive in-depth horticulture training provided by CSU faculty, staff, and specialists.

GREEN SCHOOL FULL COURSE

Registration for Green School Full Course will open in August 2025. If you would like to receive email reminders when registration opens, sign up here: 2025 Green School Interested List

GREEN SCHOOL SHORT COURSES

COLORADO GARDENING FOUNDATIONS
Soils, Entomology, Tree Care & Planting, Colorado Gardening Challenges, Irrigation

LANDSCAPE MANAGEMENT BASICS
Soils, Lawn Care, Weed Management, Irrigation, Tree Care & Planting

PLANT DIAGNOSTICS
Soils, Botany, Integrated Pest Management & Plant Diagnosis, Entomology, Plant Pathology

GROWING FOOD
Soils, Vegetables, Small Fruits, Tree Fruits, Entomology

Green School Short Courses are bundles of 5 self-paced, online classes. A certificate of completion will be provided to participants upon completion of all Green School Short Courses. Registration is open year-round. Students have access to course materials for one year after registration.

Considering the Colorado Master Gardener Volunteer program?

This option requires a completed application, interview, and background check in addition to training fees and a 50-hour volunteer commitment to your local county in the first year. Learn more.

Contact GreenSchool@colostate.edu for details.

The full course is comparable to a 4-credit class. In comparison, tuition for a four-credit class at CSU is $2,264.