Page authors: Don Knoke, David Giblin
Erigeron annuus
annual fleabane, eastern daisy fleabane, sweet scabrous fleabane

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Utah, not recorded for Montana, also from Great Plains east to the Atlantic.

Habitat: Moist, disturbed areas from the lowlands to middle elevations.

Flowers: June-September

Origin: Native? Introduced in OR, status as a native in BC uncertain

Conservation Status: Not of concern


Annual, 6-15 dm. tall, the stem with long, spreading hairs below the inflorescence.


Leaves ample, generally toothed, the cauline leaves broadly lanceolate to ovate.


Inflorescence large and usually leafy; involucre 3-5 mm. high, finely glandular and sparsely long-hairy; rays 80-125, white to lavender, 0.5-1 mm. wide and up to 10 mm. long; disk corollas 2-2.8 mm. long; pappus of 10-15 very fragile bristles and some short, bristly scales, the bristles wanting in the ray flowers.

Accepted Name:
Erigeron annuus (L.) Pers.
Publication: Syn. Pl. 2: 431. 1807.

Synonyms & Misapplications:
Aster annuus L.
Erigeron annuus (L.) Pers. var. discoideus (Vict. & J. Rouss.) Cronquist
Additional Resources:

PNW Herbaria: Specimen records of Erigeron annuus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Erigeron annuus checklist entry.

E-Flora BC: Erigeron annuus atlas page.

CalPhotos: Erigeron annuus photos.

USDA Plants: Erigeron annuus information.

20 photographs:
Group by