Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Flowers: May-June
Origin: Introduced from China
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Cotoneaster horizontalis in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Cotoneaster horizontalis checklist entry.
OregonFlora: Cotoneaster horizontalis information.
E-Flora BC: Cotoneaster horizontalis atlas page.
CalPhotos: Cotoneaster horizontalis photos.
USDA Plants: Cotoneaster horizontalis information.