Quick Facts


Scientific name Eichhornia crassipes
Origin South America
Introduction 1880s, horticulturists
Aquatic community Floating
Habitat Water surfaces
Distribution Statewide, especially peninsula
Management effort Maintenance control
2014 public waters / plant acres 220 / 1,625
Water hyacinthEichhornia crassipes

Management Options

Biological Two weevil species and a moth larvae stress plants, reducing plant size, vigor, and seed production – plant hopper species released in October 2014
Chemical 2,4-D, diquat, penoxsulam – occasionally glyphosate, copper, imazamox
Mechanical Harvesters or shredders at bridges or flood control structures
Physical Occasional hand pulling pioneer populations

Environmental and Economic Concerns

  • Populations double in as little as two weeks
  • Disperses by seeds and stolons
  • Harbors mosquitoes
  • Increases sedimentation by shedding roots and shoots
  • Dense mats prevent air and light diffusion into water
    • killing native plants, fish and wildlife
    • preventing decomposition of detritus
  • Mats jam against bridges and flood control structures
  • Reduces property values and local tax revenues

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