Close to a pure stand (100% cover) of CNG; mapped several times with Field Maps Untreated Weeds; some nearby CNG was sprayed last winter and regrows as predicted. CNG started as small patches when a local resident spread grass clippings (he still does this); over time CNG spread to cover large patches threatening rehab work of the local ParkCare group FoMM. In summer 2023 when CNG was in peak seeding stage a 50m wide asset protection zone in the reserve east of backyards was slashed; I do not believe the intention was to further spread this highly invasive weed.
See also https://canberra.naturemapr.org/sightings/4558611