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Christmas trees

Photo: Judy Kowalski (Cropped from original)

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Description:

OSU Extension supports Oregon’s Christmas tree growers with research-based information on production, pest management and market trends. We offer tools, workshops and technical assistance to help growers maintain healthy trees and successful operations.

Identifying and managing Christmas tree diseases, pests and other problems

Learn to identify and treat diseases, pests, disorders and damage affecting Christmas trees in this guide for tree growers and field workers.

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Photo: Judy Kowalski (Cropped from original)

Latest Resources

Harvesting evergreen boughs from your woodland

Harvest evergreen boughs from your woodland property to make holiday wreaths. Be sure to harvest sometime after the first hard frost, and use proper pruning techniques.

Alicia Christiansen | Dec 2024 | OSU Extension Catalog

Drip Irrigation System for Field-Grown Christmas Tree Seedlings (in English)

Kirk Stroda, a seasoned 5th-generation Oregon Christmas Tree farmer, reveals groundbreaking irrigation methods for keeping newly-planted seedlings alive amid harsh heat waves and drought conditions on a farm without direct water access....

Feb 2024 | Video

Episode 28: Christmas Trees (in English)

In this episode, Jacob Putney and Chal Landgren discuss the history and science behind growing Christmas trees in Oregon. Landgren is the former OSU Extension Christmas Tree Specialist.

Jacob Putney, Chal Landgren | Dec 2022 | Podcast episode

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Weed and vegetation management strategies in Christmas trees

This publication offers an integrated approach to effective weed management in Christmas trees, incorporating diverse strategies and practices to keep weed populations off balance. It includes strategies for using prevention, mechanical means, cover crops and vegetated strips, flame weeding, and biological and chemical controls. Emphasis in chemical recommendations is on strategies to reduce herbicide resistance and protect surface and groundwater from pesticide loss.

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Photo: Judy Kowalski (Cropped from original)

In the News

New chapter begins for OSU Extension Christmas tree program

Researcher joins OSU to help growers tackle pests, weather impacts and tree health.

Chris Branam | May 20, 2025 | News story

OSU research keeps Oregon Christmas tree industry No. 1 in the nation

Each Christmas tree species requires special skill and specific knowledge to be grown successfully.

Priya Rajarapu | Mar 2025 | Impact story

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Upcoming Events

Mar 21

Tree School Clackamas

8:15 am - 5:15 pm Oregon City, OR
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Meet Our Experts

Judy Kowalski
Bio Science Research Technician, Christmas Trees

Contact me for Christmas tree resources.

Marcelo Moretti
Associate Professor

Contact me with questions about weed management in commercial agriculture.

Priya Rajarapu
Christmas Tree Specialist
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Christmas tree recommendations?

P: We buy live Christmas trees and then plant them as a family tradition. I'm recommending the practice to others, and thought it a good idea to have a list of recommended varieties. Could we work up a short list of conifer candidates that are native to Oregon? Thank you!

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