Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Wind, bees