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
Perennial grass
A perennial, clump-forming grass that goes dormant during the summer and carries out its life cycle during the winter months. Leaves are rolled in the bud, without auricles, and have a membranous ligule approximately 1/2 to 1 mm long. Leaf blades are about 10 mm wide and may reach 12 inches in length. Leaf blades may be sparsely hairy above or without hairs, but lower surfaces are usually completely hairless. Plants have a fibrous root system and bulbous fragments (called corms). These bulbs allow for the vegetative reproduction and spread of this species. The seedhead is a narrow, shiny, erect or nodding green or purplish panicle.
IPM1007, revised June 2007