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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

Woodsorrel, yellow (Oxalis stricta)

Perennial broadleaf

Yellow woodsorrelYellow woodsorrel
 

Yellow woodsorrelA perennial with trifoliate, heart-shaped leaves and yellow flowers. Seedlings have cotyledons that are very small and round to oblong in outline. Mature plants grow prostrate along the ground and have leaves that are arranged alternately along the stem, occur on long petioles, and are divided into three heart-shaped leaflets. Flowers occur in clusters that arise from long stalks in the leaf axils. Individual flowers consist of five bright yellow petals. Mature plants develop 3/4-inch-long capsules that are cylindrical and pointed, and are sparsely hairy. Seeds disperse from capsules by explosively ejecting up to 13 feet from the parent plant.

Yellow woodsorrel
 

 

Wild thing
 

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IPM1007 Practical Weed Science for the Field Scout: Corn and Soybean | Page 142 | University of Missouri Extension