Queensland has confirmed its first outbreak of the invasive weed Mimosa pigra, commonly known as the giant sensitive tree, in 25 years. The outbreak has occurred at Lake Samsonvale, located 28 kilometers from Brisbane's central business district, and has raised concerns among local authorities about the spread and impact of this notorious weed. Despite extensive surveillance, it remains unclear how this species managed to establish a presence in the region after being absent for so long.

Mimosa pigra is recognized as one of the world's most problematic invasive species, known for its rapid growth up to six meters tall, which enables it to dominate over local flora and disrupt ecosystems. The Biosecurity Queensland operations manager has expressed that this occurrence poses significant challenges for land management and biosecurity efforts in the state. As control measures are considered, authorities are emphasizing the importance of public involvement in monitoring and reporting sightings to combat the spread of this invasive plant.

In response to the discovery, residents and visitors in the area are being urged to stay vigilant and report any identified plants to local authorities. This outbreak serves as a reminder of the continuous threat posed by invasive species, necessitating proactive measures to mitigate their effects on biodiversity and public land. The local community’s awareness and cooperation will be vital in addressing this growing concern effectively.