Frogbit detection alert in the Shoalhaven region

30 Aug 2023

Residents in the Shoalhaven region are being asked to keep an eye out for an invasive weed known as Frogbit.

Frogbit (Limnobium laevigatum), is a highly invasive freshwater plant native to Central and South America and has been detected in the Bomaderry area.

Known for its rapid growth and ability to form dense mats that choke waterways, frogbit poses a significant biosecurity threat to the state.

South East Local Land Services Regional Weeds Coordinator Alicia Kaylock said finding frogbit in the Bomaderry area highlights the risk this weed poses to our region's aquatic ecosystems.

"Its aggressive growth can have a devastating impact on aquatic biodiversity as it outcompetes native water plants and reduces light, food and habitat for aquatic animals,” Ms Kaylock said.

"Frogbit is a popular aquarium plant and unfortunately is being unlawfully traded online. It is most likely the result of someone illegally dumping frogbit out of their aquarium or pond into the waterway.

"The local community has a vital role to play in protecting our waterways by helping stop the trade and spread of these of these plants.

“If you see frogbit for sale please report it and never dump unwanted water plants in or near waterways."

Residents and concerned individuals are urged to visit the NSW Department of Primary Industries' WeedWise website for detailed information on frogbit and its identification.

If you suspect you have encountered frogbit in dams, creeks, or waterways, or come across it for sale at markets, shops, or online platforms, immediate action is crucial.

Reach out to your local council's Biosecurity (Weeds) Officer or contact the NSW DPI Biosecurity Helpline at 1800 680 244 for assistance.

Frogbit is regulated as Prohibited Matter in NSW due to the extreme risk it poses to the environment and economy. The public is reminded that possession, movement, or sale of frogbit in NSW is illegal under the Biosecurity Act 2015.

If you have frogbit at home, do not just throw it away. Instead, please contact your local council's Biosecurity (Weeds) Officer to ensure its proper and safe disposal.

For more information, please email chris.finley@lls.nsw.gov.au