Distribution: Occurring in the Columbia River Gorge in Washington; Washington to California, also in the southeastern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed areas.
Flowers: April-June
Origin: Introduced from Europe
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
[none provided]
PNW Herbaria: Specimen records of Trifolium hirtum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium hirtum checklist entry
OregonFlora: Trifolium hirtum information
E-Flora BC: Trifolium hirtum atlas page
CalPhotos: Trifolium hirtum photos