Browse Christmas Trees Resources

Lynn Ketchum
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Newsletter

North Willamette Research and Extension Center News

Find out what's been happening at the farm with the latest editions of newsletters.

Article

Nitrogen Fertilizer: Where Does it Go?

Most Christmas tree growers fertilize with nitrogen (N) intending to improve tree color, growth, and ultimately value.

Where does the fertilizer go after application? How much is actually taken up by...

By Chal Landgren, Michael Bondi

Newsletter

Tall Timber Topics

A newsletter for those interested in Forestry, Woodland Management and Christmas Trees in Northwest Oregon.

OSU Extension Catalog

Developing Quality Christmas Trees in the Pacific Northwest

Each Christmas tree species requires special skill and specific knowledge to be grown successfully. This publication outlines how trees grow and the culturing practices necessary to develop the size, shape, and density of true fir, Douglas-fir, pine, and spruce Christmas trees so that they are...

By Chal Landgren

OSU Extension Catalog

Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems (Identificación y Manejo de Enfermedades, Plagas y Otros Problemas en Árboles de Navidad)

This full-color, bilingual (English and Spanish) field guide is for tree growers, field workers, and anyone else interested in Christmas tree production. It features descriptions of diseases, pests, disorders, and damage affecting Christmas trees, and describes how to identify and manage these...

By Luisa Santamaria, Chal Landgren