Fleabane Daisy (Erigeron annuus)
Synonyms: Aspen Daisy
A perennial, 8-24 inches tall; produces masses of aster-like, lavender flowers with yellow centers. Blooms mid-June to mid-July. Found across Alberta and British Columbia, south to Montana, New Mexico, and Arizona; open, wooded areas. Best in full to partial sun, dry to moist soils, prefers well-drained soil that is not too rich; attracts butterflies.