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IPM1007, Practical Weed Science for the Field Scout: Corn and Soybean

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Practical Weed Science for the Field Scout: Corn and Soybean

Eveningprimrose, common (Oenothera biennis)

Winter annual broadleaf

EveningprimroseEveningprimrose
Eveningprimrose Usually a biennial or a winter annual, but may also occur as a summer annual. Mature plants have leaves that are elliptic to lanceolate in outline, are relatively narrow, and have untoothed margins. Leaves have a distinctive white or pink midvein and may have wavy margins. Leaves along the erect, flowering stem are alternate and become progressively smaller up the stem. Stems are erect and may reach as much as 6-1/2 feet in height. Flowers occur in the upper leaf axils and are 3/4 to 2 inches in width and consist of four bright yellow petals. The fruit is an erect, hairy capsule, 1/2 to 1-1/2 inches in length.

Eveningprimrose

 

Wild thing
 

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