Trees and Forests

Student wearing orange vest holding tree core sample showing years of growth
Tree Core Sample-Basic Forestry Shortcourse
Students measuring plot size with tape and counting live trees
Measuring seedling survival on replanted clearcut
Students learning about survival assessment on reforested site
Students learning about survival assessment on reforested site
Willow, twinberry, Douglas-fir, flowering Oregon grape and grass along stream
Successful riparian restoration on Milk Creek
Students learning about weed control in perennial weed infested replanted site
Bruce Kelpsas sharing knowledge at Weed Management Workshop
20 years of selective harvesting

Announcement Items

Woodland Notes Newsletter Spring 2017 edition now available

New Riparian Rules Training, Wednesday, June 7, 2017, 10:00 am - 2:00 pm. Hopkins Demonstration Forest, 16750 Brockway Rd., Oregon City, OR. For Forest Landowners, Christmas Tree Farm Managers, and Natural Resource Professionals. The Oregon Department of Forestry (North Cascade District) and Oregon State University Extension will be hosting a training session on the new stream buffer rules for salmon, steelhead, and bull trout streams. Learn more reading the flyer. Other dates and locations for these trainings can be found here. There is no fee but you must register by Monday, June 5, by calling or emailing Doah Ellis at 503-829-2216 or Registration is limited to 50 participants. 

Christmas Tree Farm Leases and Agreements. Wednesday, May 24, 6:30 - 8:30 pm. OSU Extension Annex, 200 Warner Milne Rd., Oregon City, OR. Contact to register.

Cover Crops and Soil Health Field Workshop. Thursday, May 25. Meet at Dan Logan’s farm, North Plains, OR Please pre-register by calling Chal Landgren at 971-801-0381. There is no fee. Maps and additional information will be available at:

Community Forestry Day, June 10, 2017, 8:30 am - 2:30 pm.  Hopkins Demonstration Forest, 16750 S Brockway Rd, Oregon City, OR. Everyone welcome. Please let us know you're coming by contacting to be added for lunch. If you need more information contact Peter Matzka at

Tree School

Tree School, March 24, 2018.

Get Help:

Christmas Trees
Home Landscape

Introduction to Clackamas Extension Forestry

Growing and managing trees is a big business in Clackamas County. The OSU Extension Forestry program provides cutting edge education and research support for tree growers in Clackamas County.

Extension Publications

Natural Resources

Field Research

Field Research addresses local problems and needs.

Forest Landowner Resources

Service Provider Lists: up-to-date lists of contractor services

Forest landowner resources

Office and field consultations and visits.

Get involved

Find us on Facebook: OSU Forestry and Natural Resources Extension

Master Woodland Manager: volunteer training and community service


Demonstration and learning forests

Hopkins near Beavercreek and Ram's Dell near Dickey Prairie.

Frequently Asked Questions

(FAQs). See if yours is here!

Oregon Small Woodlands Association Annual Meeting
June 13, 3:00 – June 15, 2013
Roseburg, OR
OSWA’s 53rd Annual Meeting will be hosted by OSWA’s Douglas County Chapter at the Douglas County Fairgrounds. The theme is “Family forests our Legacy our Future – It’s a Family Thing”. The OSWA schedule includes: Thursday, June 13, OSWA Board meeting Friday, June 14, Program and Annual Membership meeting Saturday, June 15, Outstanding Tree Farmer of the Year and Howdy Neighbor woods tour Registration required. Contact OSWA for more information at 503-588-1813.
Field tour of Meripah Woodland
June 26, 2013
6:00 pm – 9:00 pm Twilight Tour
Estacada, OR
Share this