Pests, Plant Diseases, and Weeds

A comprehensive guide to plant disease management in the Pacific Northwest. Visit the companion site for updates and ordering information. https://catalog.extension.oregonstate.edu/plant

This training manual is for pesticide applicators and/or consultants seeking a pesticide license category for managing problem wildlife in agricultural or urban environments.

When is a slug not a slug? In this case when it's a shiny black sawfly. This insect, related to bees, ants, and wasps, favors pear and cherry, but attacks plum, hawthorn, quince, buttonbrush, and mou ...

This guide is now available in electronic format only.

Guide to control of diseases, insects, weeds, and vertebrate pests on commercial grapes. Weed controls - both soil-active and foliage-applied herbicides - are outlined for new and established plantings. Disease and insect controls are coordinated to pest and crop stage.

This manual is intended to help beginning pest control operators prepare for Washington State pesticide licensing exams.

This Pest Watch fact sheet provides information about brown marmorated stink bugs in Washington State so that concerned citizens can accurately identify these pests and take appropriate management act ...

This Pest Watch fact sheet on the Califonia Fivespined Ips, a pine bark beetle that has been found for the first time in Washington State, offers useful information on its history, distribution, and l ...

This Pest Watch fact sheet provides information about how to identify and manage European chafer beetles that feed on turf and cereal crops during their larval stage. Because this pest has been confir ...

The lily leaf beetle (LLB) was recently discovered in King County, Washington State, infesting landscaped lily plants. LLB is a highly destructive pest of cultivated lilies and can also infest native ...