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Clackamas County Master Gardener™ Association

Clackamas County Master Gardener™ Association

OSU Extension Service Master Gardeners™ are volunteer educators, neighbors, and on-the-ground researchers who serve their community with solid training in science-based, sustainable gardening and a love of lifelong learning.

  • Welcome
  • Lecture Series
  • Spring Garden Fair
  • 10-Minute University™
  • Members
  • What Are Those Orange Spots on Leaves?
  • Summer Fruit Tree Care
  • Cheap And Cheerful: Easy Care Annuals and Perennials That Will Bloom Continuously Throughout The Summer and Fall
  • Tips for Engaging Children with Gardening
  • Tomato Care During the Summer
  • Extend Your Vegetable Growing Season
  • Summer Watering
  • Keeping Honey Bees is not a Bee Conservation Strategy
  • Providing Nesting Sites for Native Bees


  • Summer Lawn Care
  • Summer Watering Guide for Mature Trees
  • Almost Time to Plant… Not Quite!
  • Sowing Native Flower Seeds in Fall & Winter
  • Leave the Leaves – Why and How
  • Get a Soil Test this Fall
  • Planting Spring Flowering Bulbs this Fall
  • Transitioning Your Summer Containers to Fall
  • What You Need to Know About Dividing Iris, Peonies and Daylilies
  • Tree Guide: Crepe Myrtle
  • Vegetable Pests
  • Avoid Damage from Squash Bugs
  • Having Tomato Problems?
  • Rose Diseases and Pests
  • Are Yellow Jackets Bugging You?
  • Get Free Pest Control for Your Garden: Top Five Plants to Add to Your Garden
  • Finding European Crane Flies in the lawn this September?
  • Late-Summer Powdery Mildew on Squash & Cucumber
  • How To Identify and Prevent Heat Stress in Plants

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2026 Spring Garden Fair

Spring Garden Fair May 2 & 3, 2026


10-Minute University™

2026 Webinar Series

10-Minute University™ Handouts

10-Minute University™ Videos

email: 10minuteu@cmastergardeners.org


Calendar

Public Events Calendar


For Our Community

Garden Discovery Day

Fall into Gardening

Gray and Norrene Thompson Community Projects Grant

Grow an Extra Row Giving & Learning Garden

End of the Oregon Trail Pioneer Garden

Hopkins Native Plant Garden

OSU Garden Ecology Lab


For Our Members

Chapter Chatter Newsletter

Members Page

Membership Renewal

OSU Metro MG Volunteer Reporting System

Open Gardens


Questions?

Click here for Gardening Help

Click for Information on becoming a Master Gardener Volunteer


10-Minute University Contact

email: 10minuteu@cmastergardeners.org


Webmaster Contact

email: contact@cmastergardeners.org

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The Clackamas County Master Gardener™ Association sponsors the award winning 10-MinuteUniversity­™ program, and presents the annual Spring Garden Fair every May in Canby, Oregon. We invite you to attend our Monthly Lecture Series at the Milwaukee Community Center in Oregon nine months out of the year.

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