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.
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.