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.

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.

November 12, 2016

Cataclysms on the Columbia: the Great Missoula Floods - Scott Burns

Between 15,000 and 18,000 years ago, a series of momentous floods crashed through the Pacific Northwest, reaching heights of up to 400 feet where Portland lies today and carving the landscape of the Columbia Gorge and Willamette Valley.

Geologist and gifted speaker Scott Burns will focus on the incredible story of J Harlen Bretz’s discovery of the Ice Age floods and the pioneering research that Bretz used to prove his discovery to the world. Burns will also discuss the floods’ effect on the formation of 16,000 square miles of Pacific Northwest terrain, from eastern Washington to Astoria and the Willamette Valley.  Whether or not you’re a geology buff, you’ll be glad you joined us for this fascinating and humorous presentation about our region’s natural history.

Scott Burns is a Professor Emeritus of Geology and Past-Chair of the Dept. of Geology at Portland State University. He has been teaching for 44 years, with past positions in Switzerland, New Zealand, Washington, Colorado and Louisiana.  Scott specializes in environmental and engineering geology, geomorphology, soils, terroir and Quaternary geology.

*mg education credit

2017 International Master Gardener Conference Portland, Oregon, July 10 - 14

Early Bird Registration is open now through January 13.

Cost is as follows: Early Bird, Master Gardener ($330): includes access to the all keynote talks, concurrent session classes, conference trade show, Search for Excellence presentations and general session, regional Master Gardener mixers, lunches and snacks.

Registration link:

Blog page with all the info for the event:

And sign up for the newsletter to stay in the know:


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