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 13:

Growing Conifers: What Gardeners Can Learn from Christmas Trees, Chal Landgren, OSU’s Christmas Tree Specialist

Many gardens include conifers such as Douglas, noble, grand, Nordmann or Turkish firs. Chal’s talk will focus on common problems that gardeners and Christmas tree growers share. Some of the problems may have a solution, others may simply be warnings to avoid future problems. He will also discuss some of the culturing tips that may be useful in gardens.

Chal Landgren is OSU’s Christmas Tree Specialist. Recent research projects include getting rid of slugs for tree export, foliar fertilization, genetic improvement and testing of noble fir, Douglas fir and Nordmann/Turkish fir. Frequent tree questions involve a wide variety of pest and tree problems and culturing. He and his wife run a small Christmas tree farm on their 7-acre farm. 

*MG education credit*


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