Weedy Vine - Knowledgebase Question

El Paso, TX (Zone 8B)
Question by salomedamon
August 19, 2006
There is a vine over my fence that has white flowers. The leaves are heart-shape and green. When it rains it grows fast and covers the ground. The stems are long and stringy and when pulled, emits a stench and a milky, sticky liqud. What is it called and how can I get rid of it permanently?

Answer from NGA
August 19, 2006


What you describe sounds like BIGROOT MORNINGGLORY (Ipomoea pandurata). Growing without competition, bigroot morningglory can produce 3000 seeds per plant. Roots send up new shoots in mid-May to early June but seeds germinate throughout the growing season. Flowering begins in mid-July for first-year plants, mid-June for older plants, and continues until the frost. Flower stalks exude a milky sap if broken or crushed. Control is difficult because bigroot morningglory emerges late, has a large taproot that extends well below 12", and can reproduce from root cuttings. Post emergence herbicides generally provide good control. (Round-Up, applied according to label directions.)

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