Colorado Gardener Calendar

Flower Bin Garden Store in Longmont, CO

Find out about the latest Colorado gardening classes, events, and plant sales here. We will update this page regularly with new events or cancellations.




9th Annual NoCo Urban Homestead Tour
Sat, July 30
Featuring seven local homesteads in Fort Collins, Loveland, and Windsor demonstrating self-sustaining lifestyles that include growing your own produce, raising bees and backyard animals, season extension, food preservation, re-purposing materials and much more. Tickets on sale now -


High Plains Env. Center Online Native Plant Sale
Now through September 5

Place online order for native wildflowers & grasses; pick up at 2698 Bluestem Willow Dr., Loveland 80538.

Fort Collins Nursery Sales
Fri-Sun, June 17-19 & Fri-Sun, July 16-24

Father's Day Tree Sale, 6/17-19: Fri-Sat 9-5pm; Sun 10-5pm. 7/16-24: Summer Perennial Sale, Fri-Sat 9-5pm; Sun 10-5pm. 2121 E. Mulberry, Fort Collins., 970-482-1984.

                    JUNE WORKSHOPS & CLASSES


Global Steppe Symposium

Wed-Thur, July 27 & 28

Presented by Denver Botanic Gardens. Attend one or both days.

This symposium is open to all. Learn about the complicated and essential relationship between humans, gardens and the steppes through scientists, plant lovers, land stewards, agriculturists and artists who live and work in the steppes.

The semi-arid grasslands and shrublands that constitute the steppes contain some of the most vibrant and resilient life on earth. Studying the steppes through traditional cultures and modern sciences provides deep and complementary knowledge that can strengthen our understanding and appreciation of all life.

Details & Registration:

Colorado Native Plant Society

Ongoing May-September 

Sign up for workshops, webinars, conferences, field trips & presentations about CO native plants, habitats & gardening. See event calendar:

Denver Botanic Gardens classes

(visit for complete class & event schedule)

1007 York St, Denver

Denver Urban Gardens 

1325 Colorado Blvd, Denver

Through Oct. 8 - Learn to Compost (Free)

Sponsored by City & Cnty of Denver & DUG, composting and vermicomposting classes. See schedule & register at DUG

Echter's Garden Center
5150 Garrison St, Arvada, CO
Check the website for classes & special events:

Harlequin's Gardens & Sustainable Nursery

4795 N. 26th St., Boulder, 303-939-9403

Visit for details. Most classes held at Boulder Circus Center, 4747 N. 26th St. $20 per person unless otherwise noted. Pre-registration is 72 hours before the class; members get 50% discount. 

High Plains Environmental Center 

Check to register & see full schedule with trail &
bird walks.

Lyon's Farmette

4121 Ute Hwy, Lyons, 303-746-6266

Register for classes:

Northern Water w/ Resource Central

Waterwise Landscape Webinar Series

Recorded webinars are free. For details, visit:

Penn & Cord's Garden Classes in Westcliffe

Beginning in May. Check for schedule.

Rocky Mt Seed Alliance Online Classes

Details:, 970-560-5486.

Ongoing - Seed School 101 & Grain School 101

Tagawa Gardens

7711 S. Parker Rd., Centennial; 303-690-4722.

Sign up for the newsletter to get info on online & in-person classes, plus special events:

The Windsor Gardener (& Brewery) Classes

6461 Colorado Hwy 392, Windsor, CO

Upcoming classes & resources at