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•    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


•    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

Download Fact Sheet

Visit the contacts directory to speak with your local weeds authority about this weed.