Distribution: Occurring in scattered locations on both sides of the Cascades crest; Alaska an Yukon Territory, Rocky Mountain states, and eastern North America.
Habitat: Open, disturbed areas, often associated with former homesteads.
Flowers: May-June
Origin: Introduced
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Rheum rhabarbarum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Rheum rhabarbarum checklist entry
OregonFlora: Rheum rhabarbarum information
E-Flora BC: Rheum rhabarbarum atlas page
CalPhotos: Rheum rhabarbarum photos