Description
• Can form dense floating or rooted rafts up to 1m thick
• Greenish hollow stems with shiny leaves arranged opposite
• Flowers are rounded, white and paper-like on ends of stalks
• Roots can become thick and rhizome-like
Flowering Times
• Spring through to autumn
Control Measure
• Contact your local Weeds Officer for specific management options
• Herbicides
Problems
• Grows aggressively both in water and on land
• Extremely invasive – difficult to control
• Spread by water/floods, machinery, vehicles, and livestock
• Difficult to identify in dense vegetation when not in flower
