Floating Water Chestnut (Trapa species)
Status of floating water chestnut in Tasmania(Trapa species)
- Floating water chestnut is a declared weed in Tasmania under the Tasmanian Weed Management Act 1999. The importation, sale and distribution of floating water chestnut are prohibited in Tasmania.
legal responsibilities of landholders and other stakeholders in dealing
with water hyacinth are laid out in the water hyacinth Statutory Weed
What does floating water chestnut look like?
- Floating water chestnut is an aquatic weed of ponds, freshwater estuaries and mudflats.
- European water chestnut (T. natans)
forms a rosette of leaves arising from the tip of a long (1 to 1.5 m)
submerged stem. The leaves are waxy, triangular and with toothed
margins. The flowers are inconspicuous, four-petalled, white and located
in the centre of the rosette. The fruit is a distinctive four-horned
nut containing a single seed.
- Floating water chestnut spreads by seed.
Image top right: floating water chestnut - nut
Image above: floating water chestnut - leaves
Impacts of floating water chestnut
- Floating water chestnut is a serious weed of freshwater water bodies.
Where does floating water chestnut occur
- Floating water chestnut is a native of warm temperate southern Europe and Asia.
- Floating water chestnut has not established anywhere in Australia.
What you need to do
- If you locate
floating water chestnut anywhere in Tasmania, or if you find a plant
that you think could be floating water chestnut, immediately contact
your Regional Weed Management Officer on 1300 368 550 to report this
Weed Links and Resources
Other useful links
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permitted by law, the Tasmanian Department of Primary Industries, Parks,
Water and Environment (including its employees and consultants)
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