Lambsquarters, common (Chenopodium album)

A summer annual weed primarily of cultivated agronomic and horticultural crops that may reach 3-1/2 feet in height and produce thousands of seeds per plant. Seedlings have cotyledons that are elliptic to linear in outline and dull green on the upper surface and maroon on the underside. The first pair of true leaves are opposite, and all other leaves are alternate. Seedling leaves are triangular and have a mealy gray cast on the upper leaf surface. Stems are erect, hairless, grooved, branching and light green to red in color. Flowers are small and clustered into panicles at tips of branches and upper leaf axils.

IPM1007, revised June 2007