Reference Data · Western Washington
The Library
Searchable directories of plants, diseases, pests, beneficial organisms, and soils - with host associations, susceptibility data, and management references built from regional extension research.
2,839 profiles indexed · Type a name, genus, or keyword
Plants
2033Species profiles with diseases, pests, cultivar resistance data, and site requirements.
Diseases
551Pathogens, host associations, causal agents, and regional management notes.
Pests
239Insects, mites, and other organisms with biology, host data, and IPM strategies.
Beneficials
7Natural enemies with target pests, habitat needs, and conservation biocontrol strategies.
Soils
9Soil series with drainage, pH, texture, plant suitability, and USDA-NRCS data.
Glossary
115Technical horticulture terms defined for the field, with links to guides where they appear.
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.
Active Project
Data Enrichment in Progress
This library grows through continuous data collection and verification. Profiles start with identity and host associations, then deepen with site data, phenological timing, cultivar performance, and regional management notes. Each dimension is sourced from extension research and field observation.
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.