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Black Swallow-wort
Identification
Black Swallow-wort (Cynanchum louiseae) – Herbaceous, perennial vine with twines 3-8 feet high. Its leaves are dark green and shiny, opposite, 2-5 inches long, and narrowly to broadly oval with pointed tips. Flowers are tiny and dark purple with 5 pointed, downy, triangular petals that are as long as they are wide. Seedpods are milkweed-like, slender and tapered, and 1.5-3 inches long.
Situation in Kansas
Black swallow-wort can survive in many situations in Kansas, including timbered, rangeland, and road right of ways. It is present is four Kansas Counties: Montgomery, Riley, Geary, and Morris. Black swallow-wort is an invasive weed in the northeast, which once established, becomes difficult to control.
