University of Missouri Extension

IPM1007, Revised November 2009

Practical Weed Science for the Field Scout: Corn and Soybean

Ryegrass, annual or Italian ryegrass (Lolium multiflorum)

Winter annual grass

Annual ryegrassAnnual ryegrass
Annual ryegrass

A troublesome winter annual weed usually of small grains that is also planted for use as a forage in some areas. Leaves are rolled in the bud with conspicuous clawlike auricles in the collar region. This is one of the few winter annual grasses with an auricle. Leaf blades are 2-1/2 to 8 inches long and 4 to 10 mm wide when mature and have a membranous ligule. Leaves usually have a shiny appearance, especially on the lower surfaces. Leaf sheaths are usually tinged red at the base. The seedhead is a spike that ranges from 4 to 16 inches in length. Spikes have individual spikelets arranged alternately up the stem.

Annual ryegrass
Wild thing
 

IPM1007 Practical Weed Science for the Field Scout: Corn and Soybean | University of Missouri Extension

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