Distribution: Occurring west of the Cascades crest in Washington; Washington and in California
Habitat: Roadsides, fields, wastelots, lawns, and other disturbed areas.
Flowers: April-June
Origin: Introduced from Europe
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
[none provided]
PNW Herbaria: Specimen records of Trifolium suffocatum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium suffocatum checklist entry
OregonFlora: Trifolium suffocatum information
E-Flora BC: Trifolium suffocatum atlas page
CalPhotos: Trifolium suffocatum photos