Page author: David Giblin
Chenopodium album
lambsquarters, pigweed

Distribution: Widely distributed throughout Washington; widely distributed throughout much of temperate North America.

Habitat: Widespread weed of disturbed areas, including gardens, roadsides, and waste lots.

Flowers: June-September

Origin: Introduced from Europe, but some populations in the mid-west may be native to North America, according to FNA

Conservation Status: Not of concern


Erect or rounded, freely-branched annual, 2-10 dm. tall, greenish to grayish with a mealy coating, often tinged with red in age.


Leaves alternate, usually firm and somewhat succulent, the blade ovate to rhombic with a wedge-shaped base, 3-10 cm. long, mostly shallowly to deeply wavy-toothed, with a slender, short petiole.


Flowers perfect, glomerate in large, terminal panicles; perianth 5-cleft to below the middle, with a mealy coating, becoming strongly keeled and completely covering the fruit; stamens 5, opposite the perianth lobes; styles 2, short.



Accepted Name:
Chenopodium album L.
Publication: Sp. Pl. 1: 219. 1753. 1753.

Synonyms & Misapplications:
Chenopodium album L. var. album [KZ99]
Chenopodium album L. var. missouriense (Aellen) Bassett & Crompton [KZ99]
Chenopodium album L. var. stevensii Aellen [KZ99]
Additional Resources:

PNW Herbaria: Specimen records of Chenopodium album in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Chenopodium album checklist entry.

E-Flora BC: Chenopodium album atlas page.

CalPhotos: Chenopodium album photos.

USDA Plants: Chenopodium album information.

27 photographs:
Group by