Wild Sunflower

Common: Wild Sunflower or Common Sunflower

Scientific: Helianthus annuus

Affected Crops: Soybeans.

Identification: This is an annual, 1 to 10 feet tall which is a problem particularly in the Mid-West. The seedling cotyledons have a rough surface with a slightly lobed margin, tapered into a point. Stems beneath cotyledons are green with stiff white hairs. Leaves are alternate with toothed edges. Both the leaves and stems are covered with hair. The large flowers are yellow with brown to reddish-brown centers.

Geographical Distribution: Found throughout the United States.

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