"I think Lombardy Popular should be treated as with any member of the willow family as a potentially significant weed that we should not plant next to waterways and control in areas of environmental importance. Under the ACT's pest plants and animals act it is prohibited to propagate or sell this plant." Michael Mulvaney.
http://keyserver.lucidcentral.org/weeds/data/media/Html/populus_nigra_italica.htm
http://www.environment.gov.au/cgi-bin/biodiversity/invasive/weeds/weeddetails.pl?taxon_id=5425
Populus nigra is listed in the following regions:
Canberra & Southern Tablelands | Albury, Wodonga | South Coast
Synonyms
Populus nigra ‘Italica’Receive alerts of new sightings
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Bullen Range Commonwealth & Kings Parks Gigerline Nature Reserve Isaacs Ridge and Nearby Jerrabomberra Wetlands Mount Ainslie to Black Mountain Pine Island to Point Hut Point Hut to Tharwa Stony Creek Tharwa Bridge Tuggeranong Hill Yarramundi GrasslandPlaces
Barton, ACT Bredbo, NSW Canberra Central, ACT Greenway, ACT Isaacs, ACT Jerangle, NSW Monash, ACT Paddys River, ACT Parkes, ACT Stromlo, ACT Tennent, ACT Tharwa, ACT Theodore, ACT Yarralumla, ACT