Clackamas County Master Gardeners


Master Gardeners™ are trained volunteers, educated through OSU Extension Service to offer the local community Reliable, Relevant and Reachable gardening information and education opportunities.

Reliable: our gardening advice and education is science-based.

Relevant: customized information for your gardening situation.

Reachable: call us on the phone, email us a question, or visit with us at markets or gardens in your community.

Garden Discovery Day


March 7, 9 am – noon. Free and open to the public.
Milwaukie Center, 5440 SE Kellogg Creek Dr., Milwaukie

  • 10 Minute University Sessions
  • Informative Displays
  • Free soil pH testing
  • Ask a Master Gardener Clinic

Free Lectures

We hold free lectures on the 2nd Monday of each month (except July and August) at the Milwaukie Center (5540 SE Kellogg Creek Drive in Milwaukie). Lectures are open to the public and start at 7 p.m.

March 9, 2015

Iris Demystified: Chad Harris, Mt. Pleasant Iris Farm *MG educaton credit

All plants do better in an environment that suits their needs. Irises are no different. Bearded irises tend to be less demanding in their requirements, but different classes and varieties can need distinct care. Beardless iris, like Siberian and Japanese iris, can vary widely in their growing needs, with Japanese iris being the most demanding.

Specializing in wet-land-loving iris of Asia, Mt. Pleasant Iris Farm also grows other iris species and garden test many newer bearded iris that require less water. Currently he and a handful of hybridizers worldwide are using Iris ensata to create a new iris hybrid that is longer blooming and more tolerant of cultural needs.

Chad Harris of Mt. Pleasant Iris Farm has been growing many different species of irises in southwest Washington for over 30 years. He is respected in the iris world as a Master Judge with the American Iris Society and for his work with Iris ensata of which several of his introductions hold National Awards. He also enjoys working with the Asian water species Iris laevigata. He also writes articles and gives presentations on Japanese iris judging and culture.

Clackamas County Master Gardeners are the folks who put on the annual Spring Garden Fair, bringing together over 7,000 gardeners with over 150 plant and garden-art vendors.

Oregon State University Extension Service offers educational programs, activities, and materials without discrimination based on age, color, disability, gender identity or expression, marital status, national origin, race, religion, sex, sexual orientation, or veteran's status. Oregon State University Extension Service is an Equal Opportunity Employer. In reference to publications, events, or activities: Publications will be made available in accessible formats upon request. Please call 503-655-8631 for information. If you have a physical disability that requires special considerations in order for you to attend the event/activity, please notify the metro Master Gardener program at 503-655-8631 or