Environmental weed in NSW and Victoria.
http://keyserver.lucidcentral.org/weeds/data/media/Html/poa_annua.htm
Poa annua is listed in the following regions:
Canberra & Southern Tablelands | Albury, Wodonga | South Coast
Maps
Banksia Street Wetland Corridor Bruce Ridge to Gossan Hill City Renewal Authority Area Crace Grasslands Flea Bog Flat, Bruce Haig Park Harcourt Hill MichaelBedingfied's Home Garden Point Hut to Tharwa Sullivans Creek, Lyneham South Sullivans Creek, TurnerPlaces
Bungendore, NSW Narrabundah, ACT Nicholls, ACT