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, 2018
The Unknown History Portland’s Rose Test Garden – Harry Landers, Portland Rose Garden Curator, retired.

11NovemberIRTGJoin us as Harry Landers explores the unknown history of one of Portland’s premier attractions: the International Rose Test Garden. The Garden serves as a trial ground for new rose varieties, as well as an exhibition space. It is the oldest continuously operating public rose test garden in the United States, covering 4.5 acres, and is home to more than 10,000 individual rose plants and approximately 650 varieties. Harry will tell us about the garden and what it takes to make it a World Class Garden and show piece of Portland.

Harry Landers is the recently retired curator, having worked in the gardens from 1989 to 2017. He is the official judge for the American Rose Garden Awards, the American miniature Roses and an independent judge for six rose companies.


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.