Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.

Habitat: Fields, damp or seasonally wet, alkaline soils, wastelots and other disturbed, open areas.

Flowers: July-October

Origin: Introduced from South America (although treated as native in CA by Jeps. Man.)

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bees, flies, beetles, wasps

[none provided]