Anchored water hyacinth
Alert
Be on the lookout for anchored water hyacinth and report any sightings immediately .
Reporting options
- Report online.
- Phone Biosecurity Queensland on 13 25 23.
- Phone the Exotic Plant Pest Hotline on 1800 084 881.
Native to tropical America, anchored water hyacinth is an aquatic invasive plant. It is closely related to one of the world's worst aquatic weeds, water hyacinth.
Anchored water hyacinth smothers the surface of creeks, lakes and other water bodies. It is not known to occur in Australia and is a prohibited invasive plant under the Biosecurity Act 2014.
Scientific name
Eichhornia azurea
Similar species
Description
- Looks similar to water hyacinth.
- Leaves are glossy, round, generally broad and ovate, 5–16cm long and 2–16cm wide.
- Stems are smooth and branched. Flowering stems grow to 8–12cm above water.
- Flowers are attractive, funnel-shaped and purple, with 6 toothed petals 1–3cm long.
- Seeds are 1–2mm long.
3D model
- View the 3D model to help you identify this plant. You can magnify the image and manipulate the view to inspect the plant from every angle.
Habitat
- Can survive either free-floating on the water surface or rooted into the mud.
Distribution
- Currently not known to occur in Queensland.
Life cycle
- Flowers in summer and autumn.
- Seeds germinate in spring.
Impacts
Environmental
- Smothers surface of creeks, lakes and other water bodies.
Economic
- Interferes with pumping and irrigation equipment, and structures such as bridges and dams.
How it is spread
- Broken fragments and seeds can spread by water, vehicles and birds.
Prevention
Control
- Before undertaking any preventative or control actions, contact us online, by phone or in person.
Legal requirements
- Anchored water hyacinth is a prohibited invasive plants under the Biosecurity Act 2014. You must not:
- keep it
- move it
- give it away
- sell it
- release it into the environment.
- You must not take any action that is reasonably likely to exacerbate the biosecurity threat posed by anchored water hyacinth.
- You must take any action that is reasonably likely to minimise the biosecurity threat posed by anchored water hyacinth.
- You must report any sightings immediately using 1 of these methods:
- Report online.
- Phone Biosecurity Queensland on 13 25 23.
- Phone the Exotic Plant Pest Hotline on 1800 084 881.
If you do any of these, penalties may apply.
Further information
- Contact us online, by phone or in person.
- View the anchored water hyacinth 3D model.