Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to Oregon, also in central and eastern North America.

Habitat: Disturbed forested areas, particularly in urban and suburban areas where the species is planted as a street tree.

Flowers: May-June

Origin: Introduced from Europe

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, butterflies, moths

[none provided]