The OSU Christmas tree program is based at the North Willamette Research and Extension Center in Clackamas county, the heart of Christmas tree production in Oregon. Christmas tree breeding, tree growth and culturing, Integrated Pest and Farm Management (IPM) are the main focus of the program.
NWREC Seed Orchards
Grafting began in 2013 on the Noble fir Christmas tree seed orchard. This orchard was the first of 5 orchards to be developed for improved seed production at NWREC. The most recent addition is a Trojan fir orchard, which may be the first of its kind in the United States. Other seed orchards include: Turkish fir, Nordmann fir and Douglas-fir.
Grower Resources
Resources for Christmas tree growers.
Extension
Christmas tree information including ongoing research and other updates from the OSU Christmas tree program.
Events
Christmas tree Integrated Pest Management and shearing for high-quality trees Workshop
When: July 14th, 2026 9AM-4PM
Where: North Willamette Research and Extension Center Pavilion, 15210 NE Miley Rd. Aurora, OR 97002
Join researchers from OSU and WSU for a day of learning. Topics include identification and management strategies of diseases, insects and common weeds. Special section on tree culturing presented by local experts!
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Pre-registration required. Cost to attend $25 includes lunch, snacks and beverages. Payable in person, with check or exact cash only.
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Pesticide credits anticipated for Oregon and Washington.
Registration Link Agenda
Features
Oregon maintains top Christmas tree producer title by adapting
A feature story from the OSU Newsroom, Nov. 25, 2025
PNW Weed Management Handbook
The latest information and reference material for weed control practices and herbicides used in Christmas tree production.
PNW Insect Management Handbook
Management information on all major Christmas tree pests.
PNW Plant Disease Management Handbook
Easy to use reference guide. Tip for using this guide: Enter "fir" into search field to find diseases related to all Christmas trees species.
Program Contacts
Priya Rajarapu,
Extension Christmas Tree Specialist
Judy Kowalski,
Bio Science Research Technician, Christmas Trees