Welcome to the OSU Extension Catalog!

The Catalog is the source for current, peer-reviewed, research-based learning materials published by OSU Extension. It is an active and growing resource, with learning materials in a variety of media for use in a variety of outreach and engagement activities and programs.

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Featured Publication

  • Trees to Know in Oregon and Washington by Edward C. Jensen cover

    Trees to Know in Oregon and Washington

    NEW! 70th Anniversary Edition! For 70 years, people have turned to one book to learn about Northwest trees. This edition expands its scope, covering even more species of trees — including several rare species native to southwest Oregon. It also updates scientific names and adds a new section on how Northwest forests are likely to be affected by changing climates. Along with all the details on native conifers, broadleaves and more than 50 ornamental trees, readers will find:
    • More than 400 full-color photos and 70 maps depicting habitat, range and forest type.
    • Easy-to-follow identification keys.
    • Handy guides to help distinguish one variety from another.
    • The story of Northwest forests — past, present and future.

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