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Colorado Gardener Calendar


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




CSU Extension
Free Gardening Webinars

Below are the online classes available from CSU Extension. These classes are FREE for the public; register at:

Wed, Jan 12, 2022: Noon
Seed Starting

Instructors: Amy Lentz, Weld County Extension and Alison O'Connor, Larimer


Wed, Feb 9, 2022: Noon
Gardening Myths

Instructor: Alison O'Connor, Larimer County Extension


Wed, Mar 9, 2022: Noon
Planning the Cut Flower Garden

Instructor: Amy Lentz, Weld County


Wed, Apr 13, 2022: Noon
Landscape Irrigation

Instructor: Alison O'Connor, Larimer County Extension


Wed, May 11, 2022: Noon
Managing Japanese Beetle

Instructor: Tony Koski, CSU Extension Turfgrass Specialist


Wed, Jun 8, 2022: Noon
Dry Shade Gardening

Instructor: Amy Lentz, Weld County Extension


Wed, July 13, 2022: Noon
How to Clean, Store, and Prepare Vegetables

Instructor: Sheila Beckley, Weld County Extension


Wed, Aug 10, 2022: Noon
Pet-Friendly Landscaping

Instructor: Deryn Davidson, Boulder County Extension


Wed, Sep 14, 2022: Noon
Fruit Trees for the Front Range

Instructor: Amy Lentz, Weld County Extension


Wed, Oct 12, 2022:
Great Plants for Fall Color

Instructor: Alison O'Connor, Larimer County Extension


Wed, Nov 9, 2022: Noon
A Gardening Year-in-Review

Instructors: Amy Lentz, Weld County Extension and Alison O'Connor, Larimer County Extension


Wed, Dec 14, 2022: Noon
Evergreens for the Colorado Landscape

Instructor: Eric Hammond, Adams County Extension

Register for these FREE webinars at:


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Adams County Extension Spring Vegetable Gardening Online Classes:

Virtual Classes (Paid)

Sat,  Jan 29, 2022, 10am
Intro to Vegetable Gardening

Adams County Vegetable garden series, a partnership with Brighton Shares the Harvest and CSU's Grow & Give Victory garden project. We'll give you the skills you need to succeed in your vegetable garden whether you're a newbie or a veteran!

Sat, Feb 26, 2022, 10am:

Small Fruits

Growing small fruits such as raspberries, black berries, bush cherries, grapes and others can be one of the most productive areas of your garden. This class will introduce you to what types of small fruits you might grow and the basics of caring for them.

Sat, March 19, 2022 10:00am:
Vegetable Varieties for the Front Range and Growing for Others

Learn about varieties that do well along the Front Range, as well as, some fun and interesting varieties you might try in your garden. We’ll also have a discussion on what you need to know to prepare your produce for donation, whether it be to a neighbor or a food bank.

Learn more and Register for these Adams County Extension Online Classes at:

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Sat, Jan 29, 2022: 8am - 4:30pm
How to Nurture the Prairie in Town and Country

Cheyenne, Wyoming
Attend the 8th Annual Habitat Hero Workshop In-person or Online!

Thu, Jan 13, 2022, 5pm MST
Wild Ones Presents
‘America’s Public Gardens: 
A Resource for Native Plants’

Free webinar hosted by Matthew Ross, Wild Ones National Board Member and Director of Continuing Education at Longwood Gardens. Take a journey to several of the nation’s public gardens.​ 
Register at:

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Women in Sustainability Events
Wed, Feb 23, 2022, 5:30pm-8pm
Seed Starter Workshop & Seed Swap

Workshop led by Katrina Karczewski w/ Grateful Garden LLC
In Person Event held at: Modern Nomad

2936 Larimer Street, Denver, CO 80205
As winter turns to spring, it’s a great time to start your garden! Katrina will walk us through the steps to starting a successful garden while the winter months are still upon us. BYOS – We encourage attendees to bring their choice of seeds too so that we can all share and swap! 
Learn more & register for Women in Sustainability events:

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Fort Collins Nursery Events:

2121 E. Mulberry St. Ft Collins
Find all events at:

Sat, Jan 22, 2022, 9:30-11am
Botany For Gardeners

Horticultural Educator Mason Vollmer will present on Botany for Gardeners, showing how the Science of Botany informs the Art of Gardening. This reveals our ancient partnership with Nature that not only has a long past but a vital role to play today and tomorrow.
Learn more and register at:

Sat, Jan 22, 2022, Noon-1:30pm
Fruit Trees & Small Fruits

Learn tools and techniques for pruning your fruiting plants to achieve the best fruit production.  We’ll cover the proper timing for pruning specific fruit varieties and provide tips for organic pest protection for your fruiting plants. 

Learn more and register at:

Sat, Jan 22, 2022,  2:30–4 pm
Vegetable Gardening Along Colorado’s Front Range

Our Colorado climate poses many challenges to the vegetable gardener such as a shorter growing season, unpredictable weather, and uninvited pests and diseases.

Learn more and register at:


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Phelan Gardens Events:
Sat, Jan 22, 2022,  10-11am
Propagation Education

Devan is going to be sharing pro tips regarding the many ways to propagate houseplants. What technique works best for which type of plant and those that don't play by the rules. If you have questions regarding a specific plant we would love to help, snap a picture and we will get you heading in the right direction.
Register for the event:

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The Gardens on Spring Creek

2145 Centre Ave., Fort Collins, CO 80526
Paid Classes, register at:


Sat, Jan 22, 2022,  1:30-3:30 pm

Made for Dry Shade

Finding plants that thrive in dry shade might be the toughest test for most gardeners. Join Alison O'Connor, Colorado State University Horticulture Extension Agent for Larimer County for options that can help these shady spots burst to life. 

Sat, Jan 22, 2022, 10:30am-12:3 pm
Native Plants for NoCo

Native plants are a hot topic, and we’re here to help you choose the best ones for your yard!  Join Sherry Fuller, Curator at the Gardens on Spring Creek to learn about why and how to plant natives.

Sat, Feb 5, 2022, 10:30am-12:30pm
Botany for Gardeners

Knowing how plants work will make you a more successful gardener. In this class, join Mason Vollmer, Horticultural Educator, to learn the basics of botany and how to practically apply it in your garden. 

Sat, Feb 19,  1:30 - 3:00 p.m
Seven Simple Steps to Save Songbirds

Join Lauren DeRosa of Wild Birds Unlimited Fort Collins to learn how to help protect your songbirds. 

Sat, Mar 12, 1:30-3:30pm
Plants and Pollinators: 
A Symbiotic Relationship

Pollinators and plants developed amazing and inspiring relationships over millions of years. These relationships provide the food we eat, the air we breathe and stabilize the soil we walk on. 

Sat, Mar 19, 10:30am-12:30pm
Plant Propagation Made Simple

Learn the tricks of propagation that can be done inside your home.  Ted Schaaf, Horticulture Educator will cover plant botany, germination of seeds and how to root cuttings. 

Register for classes at:


Wed, Jan 26, 2022, Noon
Permaculture for Pollinators,
People and Planet

Permaculture is a design science that uses nature as a model for creating resilient human systems. Join this introductory class to learn how to apply permaculture design to support pollinators, people, and the planet--in suburbia and beyond. 
Learn more and register at:

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Sat, Jan 29, 2022, 9am-Noon 

CoNPS (CO Native Plant Society) Webinar:  Introduction to Colorado Wildflowers from Plains to Peaks

Virtual Webinar: Become acquainted with the wonderful world of Colorado wildflowers and get started on developing skills to identify different species found on the eastern and western slopes

Learn more and register at:

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Sat, Feb 26, 2022

Landscaping with Colorado Native Plants Conference 

A virtual event, Keynote speaker Doug Tallamy, author of Bringing Nature Home and Nature’s Best Hope.


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Thu, Apr 28, 2022, 9am-Noon

CoNPS (CO Native Plant Society)
Field Trip - Tunnel Drive in Canon City

Tunnel Drive trail is known for the Claret Cup Cactus, Echinocereus triglochidiatus that bloom there in April and great views of the Arkansas River. 

Learn more and register at:


Sun, Jan 23,2022: 12-2pm
Plant Swap & Tour
at Front Range Gardens

10195 Wadsworth Blvd
Broomfield, CO 80021
Tour the facilities and participate in a Free Plant Swap at Front Range Gardens. Customers and attendees can bring anything plant related (for example: tools, pots, plants, anything plant related). After the swap, tour the facilities from 2pm-3pm.
Learn more at:

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Stay tuned for more 2022 gardening events including plant + seed sales and swaps coming soon. In the meantime, visit the websites below for ongoing winter classes and events: 


Denver Botanic Gardens
Sales, Classes and Events:

1007 York Street

Denver CO 80206

(second location in Littleton)


Echter's Plant Nursery
Sales, Classes and Events:

5150 Garrison Street

Arvada CO 80002


Growing Gardens
Sales, Classes and Events:

1630 Hawthorn Avenue

Boulder, CO 80304

Wild Ones: Front Range Chapter
Swaps, Education and Events:

Pollinator Plant Swaps, Native Seed Swaps

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