Hygrophila polysperma
Hygrophila polysperma
(Indian swampweed)
Plants
Exotic

Impact ID7084
Impact TypeOther
Study TypeObservational
Study LocationField
Impact DescriptionIn 2006, there was an estimated 206 acres of Hygrophila polysperma establishment in Florida, although just $14,000 was allocated by the state for control costs (compared to nearly $12 million spent on another indigenous macrophyte, Hydrilla verticillata). When nuisance-levels of establishment do occur, H. polysperma is difficult and expensive to control.
Reference31302
Great Lakes RegionNo
Cost 
LocationFlorida

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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/3/2024].

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