Some weeds pose a much higher risk to the environment, community, and economy than others. These species are classified as Priority weeds under the Biosecurity Act 2015 and are managed more strictly.
How weeds are prioritised
Weeds are assessed based on the biosecurity risk they pose, not simply whether they are present. Because these risks vary, not all weeds are treated the same way.
Each Priority weed has a specific management objective under the Biosecurity Act 2015, setting out the desired outcome for that species. Some Priority Weeds are also subject to additional legal requirements, such as mandatory control or restrictions on sale, movement, or disposal. These obligations exist because of the known, high risk posed by these species.
Detailed, species-specific information, including legal requirements, is available through WeedWise.
General Biosecurity Duty
Everyone in NSW has a General Biosecurity Duty under the Biosecurity Act 2015. This means you are required to take reasonable and practical steps to prevent, eliminate, or minimise biosecurity risks, including risks posed by weeds.
The duty encourages shared responsibility and early action to prevent weed spread.