Tree Fruit Research & Extension Center

Orchard Pest Management

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Degree Day Tables PDF format
These tables are designed to be used with the accompanying text for each pest species for which degree day models have been developed. They may open in a new browser window.

Degree Day Look-up

Degree Day/Development


The book, Orchard Pest Management, is copyrighted by the Washington State Fruit Commission. Permission is granted by the Commission to Washington State University to publish the book's content on the World Wide Web. Soft cover copies are available for purchase.


Tree Fruit Research & Extension Center , 1100 N Western Ave, Washington State University, Wenatchee WA 98801, 509-663-8181, Contact Us