Puncture vine is a summer annual. The leaves are opposite and even-pinnately compound composed of 8 to 16 hairy leaflets. The stems are prostrate mat forming originating from a taproot. The flowers are solitary, consisting of 5 yellow petals, and are found in the leaf axils. The fruit which contains 1 to 4 seeds contains 2 to 4 spines. Puncture vine spreads by seed which can remain viable for years. Puncture vine is found throughout the United States and Canada.

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Puncture vine plants should be cut off or hoed below the crown prior to going to seed. Seed fruits should be disposed of carefully.
Make your post-emergence herbicide application to puncture vine that is actively growing and in the seedling to flower stage of growth.