Upcoming Horticulture Classes:

Feb 4 & 7: Fruit Tree Care and Pruning
In this class you will learn how to prune a fruit tree – includes a demonstration in our Orchard at the Jeffco Fairgrounds. Register Here for Feb 4. Register here for Feb 7.

Feb 10: Winter Plant Care and ID
Learn how to care for trees, shrubs and perennials during winter, including how to spot early signs of plant stress, how much to water (and when), and simple strategies to protect your plants from harsh conditions. Register Here.

Mar 21: Wake Up Your Garden
Explore projects to start before planting, such as tool preparation, soil testing, seed starting, proper time for annual/perennial planting. Learn about invaders and their treatment – weeds, rodents and insects. Register Here.

Apr 4: Introduction to Hydroponics
Discover the innovative world of soil-less gardening. You will learn essential definitions, microgreen basics, and growing techniques. Register Here.

Apr 18: Native Grasses
Are you thinking of adding native grasses to your yard? This workshop will discuss the benefits of native grasses and which grasses might be best for your needs, the difference between warm and cool season grasses, how to start grasses from seed, and more! Register Here.

May 14 & 16: Beekeeping 101

Curious about keeping bees but not sure where to start? This beginner-friendly class covers the basics of honeybee biology, hive components, essential equipment, and seasonal hive management. Register Here for May 14. Register here for May 16.

May 16: Low Flammability Garden – Open Garden Day

This workshop will demonstrate how to create and build a home landscape design incorporating important design principles and discuss the decisions homeowners should make to help protect their home from a wildland fire. The Colorado Master Gardeners will be onsite to answer your horticulture questions. Register Here.

Jun 16: Native Gardens at High Altitude

Tour and explore Mountain Native demonstration garden in Evergreen, CO where the Colorado Master Gardeners will teach uses for native plants in our gardens and landscapes that are adapted to our elevation, soils, and climate. Register Here.

Jun 17: Gardening Through the Dog Days of Summer

Learn about preventative and proactive measures to keep your plants happy. Water and fertilizing are important factors for the health and longevity of your hard work waking the garden up. We will look at the quantification of these measures. Register Here.

Jun 20: Common Diseases and Pests of Fruit Trees

This workshop will cover most common tree fruit issues, including environmental factors, pests, and diseases that affect fruit tree health and fruit production and quality in Colorado. We’ll discuss integrated pest management (IPM) techniques used to prevent and treat tree damage, fungal, bacterial, and insect problems. Register Here.

Jun 23: Meet the Insects that Make Your Garden Thrive

Celebrate Pollinator Week with us at Courage Gardens as we explore the incredible insects that keep Colorado gardens blooming. In this lively, beginner‑friendly class, you’ll learn how to identify the most common pollinators you’re likely to see—from native bees and butterflies to beetles, flies, and more. We’ll talk about the essential roles these insects play in plant health, and you’ll discover simple, effective ways to attract more pollinators to your own yard. Register Here.

Jul 15 & 18: Creating a Crevice Garden

Learn about how Colorado Master Gardeners create crevice gardens in the award-winning Plant Select demonstration garden. In 2024, the rocks and hardscape for the crevice garden were built, and through the following seasons, the volunteers have adjusted and added Plant Select plants to the hardscape. The Plant Select brand exists as a collaboration between CSU, Denver Botanic Gardens, and horticulture industry leaders to develop plants designed to thrive in the high plains and intermountain regions of the West. Register Here for Jul 15. Register Here for Jul 18.

Aug 5: Tomato Tasting

Join Jefferson Horticulture Staff and Master Gardeners for a class on all things tomatoes. Participants will enjoy guided tomato tasting and live demos exploring tomato varieties, flavor, and texture, plus practical tips on how to grow, harvest, and prepare tomatoes at their peak. Register Here.

Aug 8: Native Gardens at High Altitude

Tour and explore Mountain Native demonstration garden in Evergreen, CO where you will learn from Colorado Master Gardeners. There will be an emphasis on use the native plants in our gardens and landscapes that are adapted to our elevation, soils, and climate. Register Here.

Aug 29: Low Flammability Garden – Open Garden Day

Join us for a workshop on how to create and build a home landscape design incorporating concepts of defensible space, important design principles and the important decisions homeowners should make to help protect their home from a wildland fire. Colorado Master Gardeners will also be onsite to answer questions. Register Here.

Sep 9: Seed Saving

Join Jefferson County Horticulture Staff and Master Gardeners to learn the basics of seed saving and how to collect and store seeds from your own garden to grow healthy plants year after year. Register Here.

Sep 19: Putting Garden to Bed

Time to move in reverse! Everything accomplished when the garden woke up in the Spring is now time to put it to bed for Fall. We will review the tasks which give your outdoor space a proper clean up and ready it for another season. Our to do list will include the discussion, to mulch or not to mulch, critter control, prepping tools for the next season, winter watering and overwintering plants-inside or outside. Register Here.

Nov 17 & 18: Wreath Workshop

Join Jefferson County Open Space, CSU Extension horticulture staff, and Master Gardeners for a fun workshop on wreath-making using locally sourced greens. In this workshop you will learn about forest health and management from JCOS staff, make an evergreen wreath using Jefferson County greens, and enjoy festivities and refreshments. Register Here for Nov 17. Register Here for Nov 18.

Dec 9: Not Quite a Long Winter’s Nap

The garden may be sleeping, but under that blanket of snow there is still much happening. Winter watering and proper mulch cover is key for many plants to make it until the warmth of Spring. Inside gardening may include windowsill plants, houseplant care and perusing the garden catalogues. Gardening truly is year-round. Register Here.