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Up until 1 July 2017 the main piece of legislation dealing with weeds was the NSW Noxious Weeds Act 1994. Under this Act certain plants were termed “noxious weeds” and were placed into “classes” that dictated their control measures.

As of 1 July 2017 the NSW Noxious Weeds Act 1994 was repealed and replaced with the NSW Biosecurity Act 2015 and its accompanying Biosecurity Regulations.

Under the new Act, plants are no longer termed “noxious weeds” nor do they have “classes” of weeds. All plants are assessed for their biosecurity risk. This is the risk that the introduction, presence, spread or increase of a plant will have an adverse effect on the economy, the environment or the community.

For helpful information on the identification and control of weeds please visit NSW WeedWise - Department of Primary Industries.

NSW WeedWise contains 300 weed profiles with descriptions, photos, control methods and Biosecurity Duty required  under the Biosecurity Act 2015 for each weed. Search by common name, scientific name and view priority weeds for this region

To find out more about which plants pose a biosecurity risk please view the Greater Sydney Regional Strategic Weed Management Plan 2017-2022.