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Curly-Leaf Pondweed

Potamogeton crispus Linnaeus
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Commodities Affected:


Curly-leaf pondweed is an exotic plant that forms surface mats that interfere with aquatic recreation. The plant usually drops to the lake bottom by early July. Curly-leaf pondweed was the most severe nuisance aquatic plant in the Midwest until Eurasian watermilfoil appeared. It was accidentally introduced along with the common carp. <>



Curly-leaf pondweed is known to occur in the following 43 Indiana counties: Allen, Bartholomew, Boone, Brown, Clay, Daviess, Decatur, DeKalb, Delaware, Elkhart, Fulton, Greene, Hamilton, Hancock, Henry, Jackson, Jennings, Johnson, Knox, Kosciusko, LaGrange, Lake, La Porte, Lawrence, Marion, Marshall, Monroe, Morgan, Noble, Parke, Porter, Putnam, Ripley, St. Joseph, Scott, Steuben, Sullivan, Vigo, Wabash, Warrick, Washington, Wayne, and Whitely. (Indiana Department of Natural Resources - Exotic Plant Species in Indiana Lakes (01/12/1998)