Colorado Gardener Calendar
2026 GARDENING WORKSHOPS, CLASSES, WEBINARS & EVENTS,
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CLASSES & WORKSHOPS
​Bath Garden Center
2000 East Prospect, Fort Collins
Apr 4: Rabbit & Deer Resistant Plants
Apr 11: Roses 101​
Apr 18: Drip Irrigation 101
Blue Shed Urban Gardens
1064 South High St, Denver
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Boulder Apple Tree Project
Apr 11: 9am-11am
Apple tree grafting: Learn cleft grafting method. Bring your own or use scion material provided. $25/first tree, $15/additional tree.
Houseplant propagation: Learn vegetative propagation Free, w/ suggested donation of $15.​​
​Brewdog Denver Plant Swap
3950 Wynkoop St, Denver, CO
More info on Facebook »
Apr 12: Plant Swap at 10am
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Butterfly Pavilion
Pollinator Gardening Boot Camp
6252 W. 104th Avenue, Westminster
butterflies.org/pollinator-gardening-bootcamp-2026
Apr 19, 26, May 17, July 7: Pick and choose the workshops or take all five for bundle discount. $35 per workshop.​
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CSU Extension Gardening Webinars
Free, advanced registration required.
planttalk.colostate.edu/webinars
Apr 8: Basics of Fruit Tree Production
May 13: Myths, Mistakes, Misunderstood Insects
Jun 10: All the Common Weeds & What They Tell You
CSU Ext Jeffco Native Plant Master
conativeplantmaster.colostate.edu
Various locations in: Littleton/Golden/Evergreen/Morrison
Apr 4: Introduction to Hydroponics
Apr 18: Native Grasses
Colorado Native Plant Society
Webinars, workshops, field trips & events
Colorado State University Food Systems
The Local & Regional Foods Resources & Research Webinar Series
Denver Botanic Gardens
1007 York St, Denver, botanicgardens.org
Ongoing Classes and Events
The Gardens offers tours, classes, events, plus certificates in Herbalism, Rocky Mountain Gardening & Beginning Market Farming.
Denver Rose Society Events & Presentations
Apr 4: 10-12pm, Pruning Your Roses
Apr 11: 10-12pm, Growing Roses in Colorado - Planning a Rose Garden
Apr 13: 7-9pm, Rose Breeding for Beginners
Apr 18: 10-12pm, Pruning and Training Roses
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Denver Urban Gardens (DUG)
dug.org/learn/workshop-calendar​​​
Apr 11: 9-11am, Building Healthy Soils
Apr 16: 6-8pm, Pollinators
Apr 18: 10am – Noon, Growing Oyster Mushrooms
Apr 30: 6pm – 8pm, Basics
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Echter’s Garden Center
5150 Garrison St, Arvada
303-424-7979, echters.com
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The Flower Bin
Classes & Events
1805 Nelson Rd, Longmont, theflowerbin.net
City of Fort Collins
fortcollins.gov/waterwise
Sustainable Landscape Series
Apr 21: 5:30-7pm, Converting your Sprinkler to Drip Irrigation
Fort Collins Nursery
2121 East Mulberry, Fort Collins
970 482-1984, fortcollinsnursery.com​
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Gardens on Spring Creek
2145 Centre Ave, Fort Collins
970-416-2486
gardens.fortcollins.gov/Events-and-Classes
Apr 18: Common Urban Tree Pests
Apr 25: Beekeeping: Installing Packages
​FEATURED EVENTS
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​​City Floral Garden Center's 115th Anniversary Celebration
Sat, April 26, 9am-6pm
Live music, beer from Cerebral Brewing, coffee & food. cityfloralgreenhouse.com
1440 Kearney St, Denver
2026 Roses: Jail Prune Workshop
Sat, Apr 26 • 9:30am-12:30pm
JeffCo Detention Center, Golden
denverrosesociety.org/event/annual-rose-pruning-demonstration/​
The Garden Father, Larry Stebbins
Growing Veggies in Containers (for teens & families)
at Phelan Gardens, Austin Bluffs Prkwy Colo Springs
Sat April 25 8:30 AM - 9:30 AM. $10 per family/team.
Families or Teams will take home 3 fully planted small containers (7 in x 12 in) with a variety of vegetables.
REGISTER AND PAY ONLINE AT: ventbrite.com/e/growing-veggies-in-containers-for-teens-and-families-tickets-1984058032986
​​Growing Gardens
1630 Hawthorn Ave, Boulder • 303.443.9952
growinggardens.org/classes​
Apr 4: Drip Irrigation for Home Gardeners
Harlequins Gardens Sustainable
Nursery & Garden Center
303-939-9403 (Retail), 4795 North 26th St, Boulder
harlequinsgardens.com
Apr 4: 10-11:30am, Forest Gardening
Apr 5: 1-230pm, Spring Pruning
Apr 18: 10–11:30am, Best Vegetables for Colorado
Apr 19: 1–2:30pm, Best Fruit Trees for Colorado
High Plains Environmental Center
2698 Bluestem Willow Drive, Loveland
suburbitat.org/events
Mar 28: Low Water Landscaping Class
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Jared's Nursery
10500 W Bowles Ave, Littleton
jaredsgarden.com/event-calendar
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Nick’s Garden Center
2001 S Chambers Rd, Aurora, CO 80014
nicksgardencenter.com
Phelan Gardens
4955 Austin Bluffs Parkway., Colorado Springs, CO
More events at: phelangardens.com
Apr 12: 2–3pm, Thinking About A Backyard Greenhouse?$18
Apr 19: 1–2:30pm, Dazzling Container Gardening, $18
​​​​​​​​People and Pollinators
Action Network Events (PPAN)
Free webinars and events. For more events, visit:
peopleandpollinators.org/calendar
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Rcky Mt Chap N.American Rock Garden Society, Free Workshops
Sat, Apr 11 at their plant sale at Tagawa Gardens
7711 S Parker Road, Centennial
10-11. a.m. Marcia Tatroe: Rock Gardens Rock!
11:30-12:30: Panayoti Kelaidis: A Rock Garden in your Garden
1 p.m. Kelly Grummons - Winter Hardy Cacti for Front Range Gardens
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Resource Central, Boulder
Online and In-Person Workshops & Classes
Apr 4: 10–1pm, Workshop: Sprinkler System Efficiency
Apr 7: 6:30-8:30pm, Beneficial vs. Harmful Insect Species
Apr 16: 6:30-8:30pm, Waterwise Design Principles and Plant Selection
Apr 22: 6:30-8:30pm, Fire Resilient Landscaping
Apr 28: e6:30-8:30pm, Vgetable Gardening in Colorado
Rick's Garden Center
1827 West Uintah St, Colorado Springs, CO
719.632.8491, ricksgarden.com
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The Table Public House, Denver
tablepublichouse.com/fun-events
Apr 11, 9:45–11am, Live Worm Composting Workshop
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Wildlands Restoration Volunteers Workshops & Volunteering Events
Various locations. Info at: wrv.volunteerhub.com
Apr 4: Longmont - Beaver Tree Planting
Apr 4: 9-1pm, Commerce City – Tree Planting
Apr 6 &15: Boulder – Seed Cleaning
Apr 8: Loveland – Native Seed Propagation
Apr 17: Laporte – Earth Day Tree Planting
Apr 25: Commerce City – Earth Day Tree Planting
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PLANT & SEED SWAPS
​Denver Urban Gardens
Earth Month Seed Swap
Apr 11: 1-4pm
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Front Range Wild Ones Swaps:
Native Plant Seed Swaps, Webinars, Workshops
Northern Colorado Native Plant
Swap & Giveaway
Fort Collins Xeriscape Garden Party & EcoFest at City Hall, 300 Laporte Ave, Fort Collins, CO
June 6: 11am-2pm (Free, open to Public)
More swaps & events: frontrange.wildones.org/events
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