Water hyacinth
Pontederia crassipes
Invasive summary
A floating aquatic plant that forms dense mats in warm freshwater systems.
Known impacts
Blocks waterways, reduces oxygen, disrupts fisheries, and affects irrigation and transport.
Management notes
Management usually combines mechanical removal, biological control, and nutrient reduction.
Native range
Amazon basin
Regions where reported
- CA - 40 public points
- MX - 40 public points
- US - 40 public points
- KE - 1 public point