In NSW, weeds are regulated by the NSW Biosecurity Act 2015. 

Biosecurity Officers, working from various locations within the Snowy Monaro Regional Council area, are authorised to carry out property inspections and implement weed management programs under the NSW Biosecurity Act 2015.

 Object of The Biosecurity Act 2015 (extract)

(1)  The primary object of this Act is to provide a framework for the prevention, elimination and minimisation of biosecurity risks posed by biosecurity matter, dealing with biosecurity matter, carriers and potential carriers, and other activities that involve biosecurity matter, carriers or potential carriers.