Water star grass (Heteranthera zosterifolia)

Profile

Impact

Water stargrass has shown the capacity to form dense mats of vegetation in wetlands. If left uncontrolled, it may eventually replace native species, decrease water quality and restrict water movement in such areas.

Description

Plants are usually rooted in mud and often form very long running stems with widely spaced leaves when growing underwater, but the stems break easily and may sometimes also be found floating near the water surface. 

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Control

Herbicide options

Contact your local council weeds officer for control advice for Water star grass (Heteranthera zosterifolia).

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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
Kempsey 4 Locally Controlled Weed
The growth of the plant must be managed in a manner that continuously inhibits the ability of the plant to spread and the plant must not be sold, propagated or knowingly distributed
Mid-Coast 4 Locally Controlled Weed
The growth of the plant must be managed in a manner that continuously inhibits the ability of the plant to spread and the plant must not be sold, propagated or knowingly distributed
Port Macquarie-Hastings 4 Locally Controlled Weed
The growth of the plant must be managed in a manner that continuously inhibits the ability of the plant to spread and the plant must not be sold, propagated or knowingly distributed

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For technical advice and assistance with identification please contact your local council weeds officer.
For further information call the NSW Invasive Plants and Animals Enquiry Line on 1800 680 244 or send an email to weeds@dpi.nsw.gov.au

Reviewed 2014