Lagarosiphon (Lagarosiphon major) is declared noxious in the Illawarra District Weeds Authority control area (including Kiama, Shellharbour and Wollongong council areas).
The weed control class 1. This means that:
“The plant must be eradicated from the land and the land must be kept free of the plant”.
Description: A submerged, rhizomatous, perennial, aquatic plant native to South Africa. Stems branched, up to 5 metres long, leaves alternate, linear, curving back onto themselves.
Problem: Potentially a serious weed of deep water storages and MUST NOT be grown
Control: Extremely difficult, usually mechanical.
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Must be reported to the Local Control Authority. Seek their advice.