Page authors: Don Knoke, David Giblin
Verbascum blattaria
moth mullein

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.

Habitat: Roadsides, fields, ditches, meadows, wastelots, and other disturbed open areas, often where dry.

Flowers: May-September

Origin: Introduced from Eurasia

Conservation Status: Not of concern


Taprooted biennial, producing a rosette of basal leaves the first year, and the second year a single, upright stem 4-15 dm. tall, which is glabrous below and with stalked glands in the inflorescence.


Basal leaves broadly oblanceolate, 5-15 cm. long and 1-3 cm. wide, tapering to a short petiole, toothed and often lobed; cauline leaves alternate, numerous, reduced upward, becoming sessile and clasping, toothed but not lobed.


Inflorescence an open, elongate raceme; pedicels 8-15 mm. long, much surpassing the lanceolate bracts; calyx of 5 sepals; corolla yellow or white, 2-3 cm. long, slightly irregular, 5-lobed; stamens 5, all fertile, the filaments covered with purple-knobbed hairs.


Capsule ovoid-globose, 6-8 mm. high.

Accepted Name:
Verbascum blattaria L.
Publication: Sp. Pl. 1: 178. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Verbascum blattaria in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Verbascum blattaria checklist entry.

E-Flora BC: Verbascum blattaria atlas page.

CalPhotos: Verbascum blattaria photos.

USDA Plants: Verbascum blattaria information.

40 photographs:
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