Discovering and Exploring the Leaf-feeding Insects in Our Region

Pacific Northwest (PNW) Defoliators

Whats Eating My Plants
Identify the Source of Leaf Damage - by Plant Type

Start here if know the kind of plant being eaten. Each page has images of the various types of defoliation common to that plant and a list of the species which can cause that type of defoliation. Each species is color-coded by its status: native, or exotic (new or long establshed).

Select the plant type from this list to see what leaf-feeders are in our area.

apple
cherry and plum
pear
alder
maple
poplar (cottonwood), birch, and willow
conifer (pine, cedar, fir, or other evergreen)
blueberries, grapes and berry vines (raspberry and others)
ornamental trees or shrubs (includes viburnums, laurels, and many other landscape plants)
native trees and shrubs (cascara, filbert, and others)

Secondary content using h2 tag. Column 2

Contact Us at Washington State University or Contact Us at Washington State Dept. of Agriculture