Pest plant ACT. General biosecurity duty NSW (as Carduus nutans subsp. nutans)
http://weeds.dpi.nsw.gov.au/Weeds/Details/95
http://www.environment.gov.au/cgi-bin/biodiversity/invasive/weeds/weeddetails.pl?taxon_id=8821
Carduus nutans is listed in the following regions:
Synonyms
Carduus nutans subsp. nutansReceive alerts of new sightings
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Bibbenluke Common Caladenia Forest, O'Connor Googong Foreshore Isaacs Ridge Isaacs Ridge and Nearby Kosciuszko National Park Namadgi National Park QPRC LGA Tallaganda State Forest Top Hut TSR Wanniassa HillPlaces
Acton, ACT Bibbenluke, NSW Booth, ACT Bungendore, NSW Burra, NSW Cooleman, NSW Cooma, NSW Dairymans Plains, NSW Dry Plain, NSW Fadden, ACT Isaacs, ACT Jerrabomberra, ACT Kindervale, NSW Mount Clear, ACT Rendezvous Creek, ACT Yaouk, NSW