The latest resource from Washington State University Extension is a revised guide to protecting the state’s tree fruit crops from pests and pathogens.
Through the online Extension Publications Store, experts from WSU and partner institutions share a wide range of resources aimed at farmers, gardeners, homeowners, and other communities, in both English and Spanish. The storefront includes a list of recent products.
2026 Crop Protection Guide for Tree Fruits in Washington (EB0419)
This $27, 186-page document is the revised guide to use of chemical deterrents to orchard insect, disease, and weed pests in Washington state. It covers programs for apple, pear, cherry, and stone fruit; safety; general recommendations; bee protection; environmental fruit protectants; critical temperatures; nutrients; and more. Authors include Tianna DuPont, Elizabeth Beers, Robert Orpet, Tobin Northfield, Gary Grove, Achour Amiri, Adrienne Burke, Wendy Sue Wheeler, Tory Schmidt, Bernardita Sallato, and Rui Liu.