On Friday 24 May, UHWA staff discovered an infestation of Parthenium weed in the Muswellbrook Shire Council area.
It is suspected that machinery is the probable pathway for this weed as earthmoving equipment has been used recently in the area.
Parthenium weed is identified as a significant biosecurity risk in NSW and is listed as Prohibited Matter in Schedule 2 of the Biosecurity Act 2015.
Parthenium weed invades pastures and crops and has been linked to severe human health issues including respiratory problem and severe dermatitis.
Recently a number of infestations have been found across NSW with some of them linked to drought feeding of stock with feeds sourced from Queensland.
The Authority is asking landholders to check any stock feed sites or where earthworks have recently been undertaken for this or for the presence of any other strange plant.
If you suspect that you have an infestation of this or any other plant you are not sure of please contact the Authority.