Spongeplant (Limnobium spongia)

If you see this plant contact your council weeds officer, the NSW Invasive Plants & Animals Enquiry Line 1800 680 244 or email weeds@dpi.nsw.gov.au



Spongeplant can form dense mats on the water that crowd out almost all other plants. 


Spongeplant is a native of America, it can be floating or rooted. Its leaves are very thick and leathery which are rounded or, in younger leaves, somewhat heart-shaped. Underside of young leaves have a central disc of red spongy cells. 

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Herbicide options

Contact your local council weeds officer for control advice for Spongeplant (Limnobium spongia).

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Legal requirements

The content provided here is for information purposes only and is taken from the Noxious Weeds (Weed Control) Order 2014 published in the NSW Government Gazette, detailing weeds declared noxious in New South Wales, Australia, under the Noxious Weeds Act 1993. The Order lists the weed names, the control class and the control requirements for each species declared in a Local Control Authority area.

Area Class Legal requirements
All of NSW 1 State Prohibited Weed
The plant must be eradicated from the land and that land must be kept free of the plant

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Reviewed 2014