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Tri River Area CSU Extension - To provide information, education and to encourage the application of research-based knowledge to the communities of Delta, Mesa, Montrose, and Ouray Counties.

Gardening Upcoming Classes/Programs   arrow

2019 Upcoming Classes and Programs


Annual Fall Plant Sale and Tree Auction

Saturday, October 12th, 2019 at the Mesa County Fairgrounds (2775 US HWY 50, Grand Junction)
Plant Sale: from 9am – 2pm
Tree Auction: Begins at 10am

End of season close out sales! Plants will be discounted for fall dispersal. Trees are donated from local nurseries and we usually have quite the variety up for bid. All proceeds benefit the Tri River Area Master Gardener Program.

For more information about the sale and types of plants potentially offered, please contact Christine Prins at 970-244-1834 or by email at Christine.Prins@mesacounty.us


Past Classes & Programs

Grand Mesa Pollinators

Saturday, August 31st, 2019 at The Grand Mesa Visitor Center (Hwy 65 and Forest Road 121.)
Lecture from 2PM-3PM

Come learn how insects pollinate the flowers on the Grand Mesa during this free lecture, “GRAND MESA POLLINATORS” presented by Susan Carter, Horticulture & Natural Resources Agent from the Colorado State University Extension Office. Susan’s presentation will be the last of the “Science Saturdays” held at the Visitor’s Center on Saturday, August 31st from 2pm-3pm. The Grand Mesa Visitor Center is located on Hwy 65 and Forest Road 121. For more information call 970-856-4153.

Pollinator workshop learn about grand mesa pollinators


29th Western Colorado Community Forestry Conference

Friday, September 6th 8am to 4:30pm at Colorado State University Western Campus (3170 B 1/2 Rd Grand Junction, CO 81503 )
Pre-Register on Eventbrite: 29th Western Colorado Community Forestry Conference

In 1990, foresters gathered for the first Western Colorado Community Forestry Conference in Durango to discuss the value of trees to communities and the need to address a quality community forestry program. 29 years later, foresters are still meeting and working toward these goals to maintain effective community forestry programs in western Colorado.

Although the conference objectives remain the same as nearly 30 years ago, the knowledge about trees, tree needs and management tools are constantly evolving. The conference this year focuses on urban tree pests, under-used tree species, basic tree risk assessment, and the science of tree injection. After lunch, conference participants will take a walk into the research arboretum on the Western Campus to learn about small tree pruning. At the arboretum participants will experience some unusual trees that aren’t commonly found in western Colorado. Don’t miss out!

29th Annual Colorado Forestry Conferene

Grass Identification Workshop

Wednesday, August 21st 9am to 3:30pm at Tiara Rado Golf Course in Grand Junction, CO.

Join CSU Extension Master Gardener Coordinator Christine Prins and area Master Gardeners as they identify grass types on multiple lawns and talk about weed management for your landscapes.

Contact Christine Prins with questions or to RSVP your spot at 970-244-1834 or by e-mailing her at christine.prins@colostate.edu. RSVP’s need to be placed by August 19th.

Hypertufa Workshop

Tuesday, July 30th, 9-11am at Colorado State University Extension Tri-River Area. 2775 U.S. 50 Grand Junction, CO 81503
Cost: $5-$10
Pre-Register on Eventbrite: Hypertufa Pot Workshop

Learn how to make your own hypertufa pot in this hands-on workshop!

Master Gardener Susan Honea will lead a workshop in how to make hypertufa pots! There will be enough materials for everyone to make a pot to take home! We will also make a few pots for sale at the fall Plant Sale.

Please bring the following items with you:

  • A mold for your hypertufa pot (a basket, plastic bowl, etc.) **NOTE — often the mold will have to be broken open to get the pot out, so please don’t bring your favorite ceramic bowl!
  • Eye protection
  • Rubber kitchen gloves
  • Anything you want to decorate or leave prints in your pot (leaves to press in, burlap or bubble wrap, decorative stones, etc.)

Native Plant Master Training – Black Canyon of the Gunnison

Fridays in June:

CSU Extension is taking applications for their Native Plant Master Class at Black Canyon of the Gunnison. The class will be held on Fridays June 7, 14 and 21st from 10am till 2pm. You will learn approximately 50 plants throughout this three day course. Mild hiking is involved. Youth 16-17 can also take this course, 18 and older are considered adults. Click the below link for a printable application.

Please contact Susan Carter for questions or send your applications to her at susan.carter@colostate.edu or call 970-244-1834

FREE Presentation – Gardening with Colorado Native Plants

Saturday, May 25th in Grand Junction at the Dual Immersion Academy Cafeteria, from Noon-1pm

Join CSU Associate Professor Jennifer Bousselot as she presents on planting with Colorado Natives. Presentation is FREE! Please contact CSU Extension Horticulture Agent, Susan Cater, at 970-244-1834 to find out more.

3rd Annual Demonstration Day

Saturday, May 18th at the Grand Junction Fairgrounds from 9am-1pm

Join us to see garden and landscape demonstrations by green industry professionals and CSU Extension Agents & Master Gardeners. Ute Garden Tours will also be available!

Final event details and schedule:

  • 9am Plant Select Garden Tour,
  • 10 am Community Tree Planting (back of our amphitheater)
  • 11 am Cactus Garden Tour,
  • Noon Native Plant/Ute Garden Tour.

Tons of booths with Garden and Landscape information and demonstration including weed control, maintenance, fertilizing, irrigation… Master Gardeners on hand for questions and selling herb, veggie and flower starts. Steadfast Food Truck will have Breakfast and Lunch items for sale. Some of our insects will be displayed as well! Fun for the whole family. And all FREE unless you buy something.

You can find updated event information on our Facebook event page HERE!

Contact Susan Cater at 970-244-1834 if interested in a booth space.

A Trip Through Time

Tuesday, April 2nd at the Mesa County Fairgrounds from 10-11:30am

FREE! Presentation presented by Colorado Master Gardener Kate Weissenburger. Join Kate as she takes you on a trip through time and landscape in the Grand Valley.

Presentation is free but RSVP’s are recommended. Please contact CMG Master Gardener Coordinator Christine Prins for more info at 970-244-1834.

FREE! Mason Bee Workshop

Tuesday, March 19th at the Grand Junction Fairgrounds, 3-5pm

Join for this FREE workshop on the Mason Bee. Learn about their biology, how to build your very own bee hotels, how to manage them throughout the year, and tips that can help you continue to be a successful Mason Bee host.

FREE! Community Garden Seed Saving Class and Seed Swap

March 16th, at the Montrose Public Library

FREE to all! Class will be held from 10-1pm and the Seed Swap will commence from 1-4pm.Contact Valley Food Partnership for more info about this event.