Skip to main content

Center for Aquatic and Invasive Plants Logo    Plant Management in Florida Waters

Center for Aquatic and Invasive Plants Logo    Plant Management in Florida Waters

Quick Facts

  • Scientific name: Hymenachne amplexicaulis
  • Origin: Central, South America, West Indies
  • Introduction: 1970s, natural colonization (?)
  • Aquatic community: Emergent
  • Habitat: Wet soils to shallow water
  • Distribution: South & Southwest Florida
  • Management effort: Maintenance control
  • 2017 public waters / plant acres: 41 (9%) / 1,709
  • 2017 Waters / acres controlled: 19 / 277

West Indian Marsh Grass West Indian Marsh Grass


Environmental and Economic Concerns

  • Forms dense monocultures in marshes and along shorelines
  • Displaces native grasses because of its broader tolerance to wet and dry periods
  • Difficult to control when growing among native grasses because they are susceptible to the same control methods

Management Options

  • Biological: None available
  • Chemical: Glyphosate, imazapyr, flumioxazin
  • Mechanical: Impractical; plants grow in shallow marshes
  • Physical: Fire + glyphosate to control regrowth

Florida Fish & Wildlife Conservation Commission, Status of the Aquatic Plant Maintenance Program in Florida Public Waters, Annual Report – Fiscal Year 2016-2017.