Revised June 2007
Download a free PDF of this guide.
Contents
Summer annual broadleaf
Biennial broadleaf
Perennial broadleaf
Summer annual grass
Winter annual grass
Perennial grass
Plants resembling grasses
Herbicides
Related pages
Other related Web sites
Use our feedback form to ask questions or make comments about IPM1007.
Publication search
Practical Weed Science for the Field Scout: Corn and Soybean
Summer annual broadleaf
An erect summer annual pigweed that may reach 6-1/2 feet in height. Seedlings have cotyledons that are narrow and green to reddish in color. First true leaves are alternate, ovat e in shape, and slightly notched at the tip of the leaf. Mature leaves are alternate, without hairs, and lance-shaped or egg-shaped in outline. Leaves are 2 to 8 inches long and 1/2 to 2-1/2 inches wide and occur on petioles that are usually longer than the leaves. Stems are without hairs. Seedheads are terminal panicles that reach 1/2 to 1-1/2 feet in length. Smaller lateral inflorescences also occur between the stem and the leaf petioles.
IPM1007, revised June 2007