Quick Facts


Scientific name Panicum repens
Origin Old World
Introduction Late 1800s, forage grass
Aquatic community Emergent
Habitat Dry land to water six feet deep
Distribution Statewide
Management effort Complaint management
2017 public waters / plant acres 357 (77%) / 5,089
2017 Waters / acres controlled 32 / 2,177
Panicum repensPanicum repens

Management Options

Biological None available
Chemical Glyphosate, imazapyr
Mechanical Harvest floating mats
Tilling can cut rhizomes into many viable fragments
Physical Drawdown and burn prior to treating with herbicides; flood after treatments

Environmental and Economic Concerns

  • Spreads mostly by fragmentation and runners, but also by seed
  • Thick mats stop navigation and water movement
  • Displaces native plants in wet soils and shallow waters and marshes
  • Difficult to control due to extensive starch-laden rhizomes
  • Most widely dispersed invasive exotic plant in Florida public waters
  • Rapid growth and spread on exposed wet soils

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