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Home > Weeds > Lambsquarters

Common LambsquartersChenopodium album

Abundant throughout North America, common lambsquarters is a rapidly growing summer annual that prefers rich soils, but will grow in almost any disturbed soil. Found along roads, in open fields, streambeds, lawns and vegetable gardens.

lambsquarters plant lambsquarters leaves lambsquarters flower
Plants grow 3 to 4 feet tall. They blossom June to September, each producing thousands of seeds. Stems are green with reddish to purplish streaks. In the fall leaves turn crimson. Leaves are highly variable from triangular- to diamond-shaped, somewhat toothed to mostly smooth. Light green on top, they have a distinctive white scale on the underside. Flowers are green and very small, growing in dense clusters at the tips of the main stems and at branch junctions. Flowers change to tiny fruits with even tinier black seeds.

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[Photos, left to right: Richard Old, XID Services, Inc.,; Bonnie Million, National Park Service,; Joseph M. DiTomaso, University of California - Davis,]

It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.