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Colorado Gardener Calendar

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2026 GARDENING WORKSHOPS, CLASSES, SWAPS,
PLANT SALES, WEBINARS, EVENTS, EXHIBITS

Want to see your gardening class or event listed here? Send us your event info 
here » 
Gardens on Spring Creek
Gardening Classes

2145 Centre Ave, Fort Collins
Feb 14: Intro to Orchids
Feb 21: Wildlife Gardening

Feb 21: Our Indoor Landscape: House Plants
Feb 21: Resilient Rose Gardening
Feb 28: What the Turf: Sustainable Lawns
Learn more and register at: 
gardens.fortcollins.gov/Events-and-Classes

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Wildlands Restoration Volunteers Workshops & Volunteering Events

Various locations. Info at: www.wrv.org

Feb 18: Longmont - Plant Native Seeds
Feb 23: Loveland- Native Seed Propagation

Mar 14: Lafayette - Willow Planting 
Apr 4: Longmont - Beaver Tree Painting
More Events & Register: wrv.volunteerhub.com

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Bath Garden Center

2000 East Prospect Road, Fort Collins
Feb 21: 
Zen Garden Workshop
Feb 28: Plant Physiology Class
Mar 7: Terrarium Class
Mar 8: Decoupage Air Dry Pottery Class
Find more classes and register at: bathgardencenter.com/events

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City of Longmont Public Library
Gardening Fair

Feb 22 • 1-4pm: Learn more about the Colorado growing season, ask questions, and start planning your home garden. The Free Seed Library opens on Feb 23rd. Learn more »

City of Longmont Public Library
409 4th Ave, Longmont

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​​CSU Extension Gardening Webinars

Free online classes available from CSU Extension. Advanced registration is required.
planttalk.colostate.edu/webinars
Mar 11: Get in the Zone: Do hardiness zones really matter?
Apr 8: The Basics of Fruit Tree Production
May 13: Myths, Mistakes, and Misunderstood Insects
Jun 10: All the Common Weeds and What They Tell You​​​​


Boulder Permaculture:
​Free Introduction to Permaculture Class

Mar 5 • 5:15–6:45pm: 
Put on by the Boulder Permaculture Design Course
at Boulder Public Library.
boulderpdc.com/introductory-classes


Table Public House
Gardening Workshops
2190 S Platte River Drive, Denver

Feb 19: Your Garden Plan Workshop
Mar 12: Seeds & Seedlings Workshop
$25, register at: linktr.ee/blue.shed.urbangardens
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Blue Shed Urban Gardens
Classes & Workshops

1064 South High Street, Denver

Feb 28: Healing Salves Workshop

Mar 7: Lovely Lavender Class

​Paid classes.
More at: blueshedurbangardens.com/events

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Jared's Nursery

10500 W Bowles Ave, Littleton 
Garden classes and events:

Mar 7,8: Orchids and Houseplants
Feb 14,15 & Mar 14,15: Seed Starting
Feb 21,22 & Mar 28: Lawn Care for Colorado
Feb 28 & Mar 1: Container & Squarefoot Gardening
Info & register at: jaredsgarden.com/event-calendar

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North American Rock Garden Society (NARGS) - Rocky Mountain Chapter

Feb 22: Best of the West! Natives from the Western Steppes and Mountains

Mike Kintgen, Curator of the alpine collection at Denver Botanic Gardens, will give a tour of his favorite alpines for rock gardening.
Mar 22: Garden Rocks! Day
Join us for a full day of practical, hands-on “How-To” presentations focused on rock gardening in our region.

rmc-nargs.org/events-list/

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Landscaping with Colorado Native Plants Conference

Feb 28 • 8am-4:30pm
Educational programming promoting the cultivation and maintenance of native plants in the landscape.

landscapingwithcoloradonativeplants.org

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Front Range Wild Ones
Native Plant Seed Swaps

Learn more about Front Range Wild Ones seed swaps and other events, including those below, at: frontrange.wildones.org

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High Plains Environmental Center 

2698 Bluestem Willow Drive, Loveland

Volunteer, or join events such as Nature Journaling, Guided Interpretive Walk with Restoration Ecologists, Bird Walks & more:
Feb 19: Nature Journaling w/ Loveland Open Space

Feb 21: Plant Propagation Class
Mar 28: Low Water Landscaping Class
More classes & events at: suburbitat.org/events

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Denver Urban Gardens (DUG)

Workshops

Feb 28 • 10am-1pm: Fruit Tree Pruning 

Cost & locations vary. Learn more at: dug.org/learn/workshop-calendar​​​
 

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Denver Botanic Gardens 

1007 York St, Denver, botanicgardens.org
Ongoing Classes and Events

Now-Feb 16: Orchid Showcase
Now-Feb 16:
 Love in Bloom Tours

May 9-10: Spring Plant Sale
The Gardens offers tours, classes, events, as well as certificates in Herbalism, Rocky Mountain Gardening & Beginning Market Farming. Multi-session programming includes in-depth learning from many guest speakers on topics. See botanicgardens.org/calendar for all classes & events, registration info & fees. 

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Growing Gardens Classes​

Mar 7: Front Range Vegetable Gardening 101
Mar 12: Garden Planning and Design for Produce, Planet & Pollinators
Apr 4: Drip Irrigation for Home Gardeners
Paid classes.
1630 Hawthorn Ave, Boulder • 303.443.9952
growinggardens.org/classes​

 
Roots Medicine Gardens & Friends
Seed Swap

Mar 8 • 2-5pm
Bar Max, 2412 E. Colfax Ave, Denver
Free seeds available from Humboldt House Farm, Herb Seed Library, Denver Local Seed Project, Blue Shed Urban Gardens, and Homesteading in Denver.
Learn more on Instagram »

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CSU Extension Jeffco Native Plant Master Events

Various locations in: Littleton/Golden/Evergreen/Morrison

Mar 27, May 29, Sep 25: 3 Season Grasses
May 5,12,19: Prairie/Plains and Grasses
May 16, 23, 30: Red Rocks Park Plants
Mar 21: Wake Up, Gardens
Apr 4: Introduction to Hydroponics
Apr 18: Native Grasses
Mar 14 & 16: Beekeeping 101
Mar 16: Low Flammability Garden Education
Jun 16: Native Gardens at High Altitude
More info »

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Western Landscape Symposium

Mar 28 • 8:30am-3pm
Colorado State University Pueblo
2200 Bonforte Blvd, Pueblo, CO
Registration & 2026 schedule: westernlandscapesymposium.org

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Boulder Apple Tree Project
Community Plant Propagation Day

Apr 11 • 9am-11am
​1380 30th St, Boulder, CO
Apple tree grafting: Learn the cleft grafting method. Bring your own scion material or use scion material  provided. The cost is $25 for the first tree, and $15 per additional tree. 
Houseplant propagation: You will learn vegetative propagation methods via cuttings with the EBIO Greenhouse. All plants, pots, and soil are provided for you to make a cutting to take home! The greenhouse portion of the event will be free, with a suggested donation of $15.
More info & register at: appletreeproject.org

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​​​​​​​​​​People and Pollinators
Action Network Events (PPAN)

peopleandpollinators.org/calendar

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Colorado Native Plant Society

Webinars, workshops, field trips & events: conps.org

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Colorado State University Food Systems

The Local & Regional Foods Resources & Research Webinar Series foodsystems.colostate.edu

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Echter’s Garden Center

5150 Garrison Street

Arvada, CO 80002, 303-424-7979

More events at: echters.com

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The Flower Bin Classes & Events

1805 Nelson Rd, Longmont, theflowerbin.net

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Fort Collins Nursery

2121 East Mulberry, Fort Collins

970 482-1984, fortcollinsnursery.com​

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Denver Rose Society
Mar 14 • 10am-12 pm: Best Roses for Your Garden, New and Overlooked 

denverrosesociety.org

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​The Gardens on Spring Creek
Classes & Events

2145 Centre Ave, Fort Collins

Check fcgov.com/gardens/adult-classes 
or 970-416-2486.

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City of Fort Collins 
Sustainable Landscape Series

Sustainable landscape workshops and classes starting in February. Learn more at: fortcollins.gov/waterwise

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​​​Harlequins Gardens Sustainable
Nursery & Garden Center

Ongoing classes. Check harlequinsgardens.com​​

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Phelan Gardens Workshops/Classes

​4955 Austin Bluffs Parkway., Colorado Springs, CO
More events at: phelangardens.com
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Rick's Garden Center Classes

1827 West Uintah St, Colorado Springs, CO

719.632.8491, ricksgarden.com

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Tagawa Gardens Classes & Events

7711 S Parker Rd, Centennial. tagawagardens.com

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The Windsor Gardener

6461 HWY 392, Windsor, CO 80550

970.686.9771, thewindsorgardener.com

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PLANT SALES
Growing Gardens
Cool-Weather Plant Sale

Apr 10th & 11th • 9am - 4pm

Selling organically grown cool-weather plant starts and seeds to kickstart your 2026 garden.​
1630 Hawthorn Ave, Boulder • 303.443.9952
growinggardens.org

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Rocky Mountain Chapter of North American Rock Garden Society (NARGS) Spring Plant Sale

Apr 11 • 9am - 4:30pm
For general public at Tagawas Garden Center
7711 S. Parker Road, Parker
rmc-nargs.org
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Colorado Cactus & Succulent Society
Cactus & Succulent Show & Sale

Apr 25 & 26
A Weekend Celebration of Cacti, Succulents & Spectacular Plants. A two-day show & sale. Cost: $5. Open to the Public. Sat 9-5 and Sun 9-4.
Jefferson County Fairgrounds - Exhibit Hall
15200 W 6th Ave Frontage Rd, Golden
coloradocactus.org

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Growing Gardens
Community Plant Sale

May 2, 3, 9, 10, 16, & 17 • 8am - 4pm
Selling organically growing veggie & herb starts, annuals, perennials, and more! Free to the public.
1630 Hawthorn Ave, Boulder • 303.443.9952
growinggardens.org

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Blue Shed Urban Gardens
Spring Plant Sale

May 8-9: Veggies, herbs, flowers and perennials. All seedlings will be $5 or less.
1064 South High Street, Denver
Hours & info at: blueshedurbangardens.com/events

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Denver Botanic Gardens
Spring Plant Sale

May 9-10 • 8am-5pm

Admission is free, but a reservation is required.
Member-only shopping is available from 8-9 a.m.
1007 York St, Denver,
botanicgardens.org

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Front Range Organic Gardeners (FROG) Plant Sale

May 16 • 1am-1pm rain or shine

Highlands Church, 1700 South Grant St, Denver

gardenfrog.org​

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Want to see your plant sale or gardening event listed here?
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