An invasive weed that impacts local landscapes and can cause skin irritation and hay fever has been spotted spreading along the Burnett River, with residents encouraged to help keep an eye out.
Recent wet conditions following the March flood event have created the ideal environment for Parthenium weed to thrive, with new infestations now identified on land in the eastern parts of the river.
Parthenium weed (Parthenium hysterophorus) grows quickly and spreads easily, producing large numbers of seeds that allow it to establish rapidly.
It can outcompete native plants and pasture, reducing productivity and affecting the overall health of local environments.
The plant can also cause skin irritation and trigger hay fever in some people.
Bundaberg Regional Council and Biosecurity Queensland are asking residents to familiarise themselves with the weed and report any sightings to help limit its spread.
What does it look like?
- An annual herb growing up to 1.5 metres tall, with many branches at the top
- Pale green leaves up to 20 cm long, deeply lobed and covered in fine, soft hairs
- Small, creamy-white flowers at the tips of stems, about four – 10 mm wide
- Flowers produce tiny black seeds (about two mm long) with thin white scales
Parthenium weed is already present in the upper reaches of the Burnett River but has not typically been seen as far south in tidal areas.
With early action and community support, infestations can be contained and the spread reduced, helping to protect the region’s natural environment.
Report the weed here.
