Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho; also in the northeastern U.S.
Habitat: Fields, roadsides, wastelots, and other disturbed areas, where escaping from cultivation
Flowers: April-May
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Juglans regia in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Juglans regia checklist entry
OregonFlora: Juglans regia information
E-Flora BC: Juglans regia atlas page
CalPhotos: Juglans regia photos