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Practical Weed Science for the Field Scout: Corn and Soybean

Anoda, spurred (Anoda cristata)

Summer annual broadleaf

Erect annual with alternate, triangular-shaped leaves that are coarsely toothed. Spurred anoda is freely branching from the base and may reach 3-1/2 feet in height. Seedlings generally have one round and one heart-shaped cotyledon with hairs along the margins. Velvetleaf cotyledons are similar, but the first true leaves are not toothed like those of spurred anoda. First true leaves are alternate, triangular-shaped, and hairy along the margins and on both leaf surfaces. Leaf petioles often have stipules at the base. Solitary flowers arise from the leaf axils and are 7 to 12 mm wide with petals that are light blue to lavender in color.
 

IPM1007, revised November 2009

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