University of Missouri Extension

IPM1007, Revised November 2009

Practical Weed Science for the Field Scout: Corn and Soybean

Ragweed, common (Ambrosia artemisiifolia)

Summer annual broadleaf

Ragweed Ragweed
 

RagweedA common summer annual weed of agricultural crops, pastures and roadsides. Seedlings have round cotyledons that are often purple underneath. Young leaves are opposite; subsequent leaves become alternate with age, with a dense covering of hairs over the entire leaf surface. Leaves are egg shaped in outline but highly divided. Stems are erect, branched, and have long rough hairs. Flowers are green and inconspicuous and produced at the ends of branches. The fruit that encloses the seed is a woody achene with several projections that resemble a queen's crown.
 

IPM1007, revised November 2009

Wild thing
 

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

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