Distribution: No specimens seen for Washington, but reported in Washington by the Flora of North America. Cosmopolitan weed found throughout North America.
Habitat: Moist or wet disturbed areas, particularly in association with agriculture or roadsides.
Flowers: April-June
Origin: Introduced from the Great Plains of the central United States
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Amaranthus tuberculatus in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Amaranthus tuberculatus checklist entry.
OregonFlora: Amaranthus tuberculatus information.
E-Flora BC: Amaranthus tuberculatus atlas page.
CalPhotos: Amaranthus tuberculatus photos.
USDA Plants: Amaranthus tuberculatus information.