Environmental weed in Victoria. Sleeper weed elsewhere.
http://keyserver.lucidcentral.org/weeds/data/media/Html/mentha_x_piperita.htm
Mentha x piperita is listed in the following regions:
Canberra & Southern Tablelands | South Coast
Maps
City Renewal Authority Area Cooma North Ridge Reserve Genoplesium vernale target area Gigerline Nature Reserve Googong Foreshore Haig Park Jerrabomberra Wetlands Kosciuszko National Park Lake Burley Griffin West Mongarlowe River Mount Mugga Mugga Point Hut to Tharwa Sullivans Creek, TurnerPlaces
Burra, NSW