Reference Data · Western Washington
The Library
Searchable directories of plants, diseases, pests, and soils - with host associations, susceptibility data, and management references built from regional extension research.
1,576 profiles indexed · Type a name, genus, or keyword
Plants
1086Species profiles with diseases, pests, cultivar resistance data, and site requirements.
Diseases
302Pathogens, host associations, causal agents, and regional management notes.
Pests
179Insects, mites, and other organisms with biology, host data, and IPM strategies.
Soils
9Soil series with drainage, pH, texture, plant suitability, and USDA-NRCS data.
Most Connected Plants
Species with the highest number of documented disease and pest associations in the library. More connections means more to watch for - and more management decisions per season.
Most Widespread Diseases
Pathogens affecting the most species in the library.
Most Widespread Pests
Organisms documented across the most host plants.
Deepest Cultivar Data
All plants →Profiles with the most cultivar-specific resistance and performance data - useful for making informed variety selections.
Library data sourced from WSU Extension, Oregon State University, PNW Plant Disease and Insect Management Handbooks, USDA Plants Database, USDA-NRCS Official Series Descriptions, and peer-reviewed research. All host associations verified against regional extension literature.