For 70 years, people have turned to Trees to Know to learn all about Northwest trees.
Now you can read the latest, expanded version of Trees to Know and learn how to identify native trees!
- Use easy tools to identify native conifers and broadleaf trees
- Recognize Northwest forest ecosystems
- Understand how a changing climate will impact our forests
Trees to Know in Oregon and Washington
70th anniversary edition!
This classic volume is all new! Budding botanists and seasoned explorers alike will enjoy this tour through the trees and forests of the Northwest. Learn the secrets of massive redwoods, the color magic of the western larch and how to tell true cedars from false. Explore:
- More than 400 full-color photos and 70 maps depicting habitat, range and forest type.
- Easy-to-follow identification keys.
- The story of Northwest forests — past, present and future.
Take a look inside
“I wish I had this book when I first moved to the Northwest. This makes ID easy, and it's a fun read. I appreciate the depth of coverage on our native trees.”
Richie Steffen, executive director, Elisabeth C. Miller Botanical Garden, Seattle
"This is the little book that taught me to identify Oregon trees back in the fifth grade — detailed enough for a biologist yet accessible even for a child."
William L. Sullivan, author of the "100 Hikes" series of guidebooks
About the author
Edward C. Jensen says his love of forests began with a summer job in Olympic National Park during his college years. The awesome majesty of the old-growth Douglas-firs and western hemlocks he found there changed his life. Jensen has spent his career teaching students about trees, shrubs, and native plants. He is also the author of Woody Plants in North America, Shrubs to Know in Pacific Northwest Forests, and the Manual of Oregon Trees and Shrubs. Jensen is an emeritus professor in the College of Forestry at Oregon State University