Distribution: Reported for Washington, but specimen from Pierce County is likely a misidentification; Alaska to Oregon and Nevada, east across North America to the Atlantic Coast.
Habitat: Disturbed areas.
Flowers: May-July
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies
[none provided]
PNW Herbaria: Specimen records of Polygonum achoreum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Polygonum achoreum checklist entry.
OregonFlora: Polygonum achoreum information.
E-Flora BC: Polygonum achoreum atlas page.
CalPhotos: Polygonum achoreum photos.
USDA Plants: Polygonum achoreum information.