Revised June 2007
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Contents
Summer annual broadleaf
Biennial broadleaf
Perennial broadleaf
Summer annual grass
Winter annual grass
Perennial grass
Plants resembling grasses
Herbicides
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Practical Weed Science for the Field Scout: Corn and Soybean
Summer annual broadleaf
A summer annual with yellow flowers and distinctly toothed leaves. Seedlings have two cotyledons that are generally heart shaped with a small indentation at the cotyledon apexes. The cotyledons and the stems below the cotyledons (hypocotyls) are covered with short hairs. Mature plants have leaves that are arranged alternately along the stem, approximately 3/4 to 2 inches long, and inconspicuously hairy. Leaves are oval to lanceolate in outline with toothed margins. Leaves occur on petioles that are 1/2 to 1-1/4 inches long and have small spines (stipules) at the base of each leaf petiole.
IPM1007, revised June 2007