Find out about the latest Colorado gardening classes, events, and plant sales here. We will update this page regularly with new events or cancellations.
SUBMISSION DEADLINE FOR HARVEST CALENDAR IS AUG. 3 FOR DATES BEGINNING AUG. 21.
EMAIL ENTRIES TO COGARDENER@GMAIL.COM
CLASSES & WORKSHOPS
FREE Gardening Webinars
Registration required, you will receive an email with the class link.
Wed, May 12
Common Weeds in Front Range Landscapes
12:30pm w/Amy Lentz, Weld County
Fri, May 14
Things Mom Taught Me: Gardening Wisdom (Or Not)
12:00pm w/ John Murgel, Douglas County
Wed, June 9
Best Of Perennials from the CSU Perennial Trials
12:30pm w/ Jim Klett, Ornamental Plant Specialist
Wed, July 14
Troubleshooting Irrigation Issues
12:30pm w/Tony Koski, Turfgrass Specialist.
Wed, August 11
Cooking with Your Harvest: Summer Vegetables
12:30pm w/Amy Lentz & Sheila Beckley, Weld County.
Denver Botanic Gardens
Check website for class listings & fees.
1007 York St, Denver
BotanicGardens.org or 720 865-3500.
The Gardens on Spring Creek Virtual Classes
2145 S Centre Ave, Ft. Collins
Sat, May 8
Just Drip It! Basics of drip irrigation
Sat, May 8
Sat, June 19
Vegetable Gardening-Mid-Summer Must Knows
10:30am-12:30pm $10. fcgov.com/horticulture or 970-416-2486 to register.
Harlequins Gardens Virtual Class
Sun, May 16, 10-11am
Growing Mushrooms on Logs & Stumps
with Zach Hedstrom
to register on Eventbrite.
Thurs-Sat thru June 13
Desert Canyon Farm Open Farm Days
1800+ varieties of herbs, vegetables, berries, fruit trees, perennials, edible flowers, fairy garden plants. Free workshops Covid permitting.
1270 Field Ave, Canon City.
2021 CO Native Plant Society Native Plant Sale
Visit conps.org to order now.
Cheyenne Mountain Zoo In-Person Plant Sale 5/22-5/23
Offering vegetables, fruits, herbs, annual hanging baskets, fruit trees.
4250 Cheyenne Mountain Zoo Rd.,
Fri-Sat, May 7-8, May 14-15, May 21-22
Horticultural Art Society (HAS) of Colorado Springs Plant Sales
5/7-5/8: Shrubs & perennials. 5/14-5/15: Perennials, shrubs, grasses. 5/21-5/22: Tomatoes, peppers, perennials, herbs, vegetables from local growers. All sales 9-4 at HAS Cottage, 224 Mesa Rd/Glen Ave, Monument Valley Park, Colorado Springs. Hasgardens.org.
Tues, May 4 – Mon, May 16
Gardens at Spring Creek Online Spring Plant Sale
Member presale Opens 5/4. Public Sale opens 5/6 at noon. Curbside pick-ups. May 12-22.
Thru Sept 6
High Plains Environmental Center Online Native Plant Sale
Over 100 species! Order when you are ready to plant. Curbside p.u. at 2698 Bluestem Willow Dr, Loveland. Visit suburbitat.org
Virtual Spring Plant Sale at Denver Botanic Gardens
Open to all, no ticket required. Garden in a Bag collections available. 10% Member Discount. In-Person Sale of remaining inventory May 10-11. Reservations required. Full details at botanicgardens.org.
1007 York St. Denver
Sat & Sun, May 8-9, May 15-16
Growing Gardens Greenhouse 21st Annual Community Plant Sale
8am-4pm at 1630 Hawthorne Ave, Boulder, CO 80304
Sat, May 8
Happy Transplants Garden Club 21st Annual Plant Sale, 9am-2pm or sellout. Perennials, annuals, vegetables, herbs. Rain Date – Sat, May 15. Vectra Bank Parking Lot, 72nd Ave & Irving, Westminster.
Sat, May 15
Sat, May 22
North American Rock Garden Society Rocky Mt Chapter Annual Spring Plant Sale (Members only this year – good time to join!) at Apex Garden, Arvada. rmcnargs.org.
Sun, June 6
Colo. Water Garden Society
Annual Plant Sale
Members only 9-10am, general public 10am-2pm. At The Hudson Gardens & Event Center.
or 303 423-9216
Sat, June 12
Denver Rose Society Show
“A Rose in Time”
1-4:30pm in Mitchell Hall, DBG York St. Enter roses, arrangements, rose photography for judging in many categories. No entry fees.
Sat, June 5, 12 & 26
Colorado Native Plant Society Garden Tours
6/5 in South Denver, 6/12 in Loveland/Fort Collins, 6/26 in Boulder/Longmont. Register at conps.org
Sat-Sun, June 11-12
Longmont Symphony Guild Garden Tour, 9am-3pm. Tickets available at longmontsymphony.org & Then Flower Bin.
Sun, June 13
Park Hill Garden Walk.
Sat, June 19
Lyons Garden Club’s first ever garden tour, “Mountain Blooms” 10am-
2pm. Tickets available through EventBrite starting May 1, 2021. Check
www.lyonsgardenclub.com for link.
Saturday, June 26
Gardens for the Birds Tour 8am-12:30pm. Tour 5 native gardens at the Audubon Center Public Demonstration Gardens in Roxborough/Littleton.
Timed tickets required:
Sat-Sun, June 26-27
15th Annual Parade of Ponds & Waterfalls, Monument & CO Springs, 9-5. Tickets $5, avail. June 1 at www.purelyponds.com/parade-of-ponds.
Sat-Sun, July 17-18
Colorado Springs Garden Tour,
9am-3pm. A midsummer stroll through the Old North End. Tickets $25,
Sat, July 31
10th Annual Saguache Hollyhock Fest 10-3. Self-guided tours of hollyhock, flower & vegetable gardens of Saguache. Visit saguachechamber.org or FB.
8th Annual NoCo Urban Homestead Tour of local homesteads across Fort Collins & Loveland. fcgov.com/gardens/noco-urban-homestead-tour