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What's the Solution?
A. Black Medic Incorrect! The weed pictured is actually common yellow woodsorrel, a species in the Oxalis family. Yellow woodsorrel is a common summer annual weed that can be perennial in some areas. It grows on weak stems that branch at the back and generally forms roots at the lower nodes. Although sometimes mistaken for clover or black medic when not in flower, yellow woodsorrel produces three pale green heart-shaped leaves. In the later stages, it produces small, bright yellow flowers with fire petals, which eventually turn into seedpods that expel seeds forcefully in dry conditions. Once established, oxalis can be difficult to control. For optimum yellow woodsorrel control in turf or landscape ornamentals, a preemergence herbicide application is a great option. One of the following treatments is recommended:
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