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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: Salvinia molesta
  • Origin: South America
  • Introduction:1990s, horticulturists
  • Aquatic community: Floating
  • Habitat: Water surfaces, quiescent waters
  • Distribution: N & central FL lakes, SW FL canals
  • Management effort: Eradication in several locations
  • 2017 public waters / plant acres: 1 / 0.1
  • 2017 Waters / acres controlled: 4 (private ponds/ditches) / 1.3

Giant Salvinia Giant Salvinia


Environmental and Economic Concerns

  • Grows rapidly and reproduces by vegetative fragments
  • Dense infestations block navigation, cover native plants, and clog irrigation pipes
    • wind and water movement can pile plants into mats a foot or more thick
    • thick mats hinder herbicide control – herbicides may only kill the top layer of plants
  • Reduces oxygen content in water which can lead to fish kills
  • Considered one of the world’s worst weeds
  • Under FWC eradication programs in four pond / ditch systems in Florida

Management Options

  • Biological: South American weevil, Cyrtobagous salviniae
  • Chemical: Diquat, fluridone, flumioxazin, glyphosate, penoxsulam
  • Mechanical: Not feasible in current infestations
  • Physical: Dewatering, hand picking surviving plants after herbicide application in small pond eradication sites

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