Water hyacinth (Eichhornia crassipes) is declared noxious in the Illawarra District Weeds Authority control area (including Kiama, Shellharbour and Wollongong council areas).
The weed control class is 3. This means that:
“The weed must be fully and continuously suppressed and destroyed”.
Description: A free-floating aquatic plant growing in deep or shallow water and in mud. Spreads vegetatively by fragmentation. One plant in one season can spread to occupy about 300 hectares. Easily recognised by its bright shiny pale green fleshy leaves on swollen bladder like stems. Attractive mauve flowers appear in summer and its seeds may lie dormant for may years before germinating. A native of South America.
Problem: The plant threatens water use generally. Infestations may make water unfit for domestic and stock use, choke irrigation systems, block drainage lines, hinder navigation and seriously interfere with wildlife.
Control Plan: Click here
For more detailed information click here