Weeds of National Significance (WoNS) are a list of the most problematic plant species found in Australia based on an assessment on their invasiveness, potential for spread and environmental, social and economic impacts. Consideration was also given to their ability to be successfully managed.
As of May 2020, there are 32 WoNS, 19 are currently found in Tasmania. If you should locate any WoNS not yet recorded or naturalised anywhere in Tasmania, immediately contact Biosecurity Tasmania on 03 6165 3777 to report this weed.
The WoNS listed below are individual species or genera. Please note that some of these species or genera are grouped together as one of the 32 WoNS (e.g. Asparagus weeds, Brooms, Opuntioid cacti, and Bitou bush / Boneseed). Click on the common name to go to the DPIPWE website or the external site for more information from the national Weeds of National Significance website.