Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Disturbed areas including fields, roadsides and wastelots.
Flowers: May-July
Origin: Introduced from Eurasia
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies, butterflies
[none provided]
PNW Herbaria: Specimen records of Brassica juncea in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Brassica juncea checklist entry
OregonFlora: Brassica juncea information
E-Flora BC: Brassica juncea atlas page
CalPhotos: Brassica juncea photos