Water Hyacinth (Eichornia crassipes)

Since then, the Florida Department of Environmental Protection and the US Army Corps of Engineers has reduced the population to around 2,000 acres statewide.

This plant can form dense colonies that block sunlight, clog water intakes, and crowd out native species and can double in size in as little as two weeks. They can reduce dissolved oxygen levels and cause fish kills, increase flooding by forming dams, increase mosquito populations, decrease biodiversity and deposit as much as 500 tons of rotting plant material on the bottom of a waterway.