Research-based educational materials about Natural Resources from the OSU Extension Catalog

Image of Shrubs to Know in Pacific Northwest Forests publication
EC 1640
Published September 2013
Image of Understanding Names of Oregon Trees publication
EC 1502
Revised April 2012
EM 9041
Published March 2011
EM 9005
Published September 2010
Image of Toxic Blooms in Oregon Waters publication
EC 1631
Published July 2009