Sam is helping to remove a noxious weed called bitou bush
and is planting indigenous plant species such as spinifex and pigface.
In southern Australia, bridal creeper (Asparagus asparagoides), bitou bush (Chrysanthemoides monilifera) and blackberry (Rubus fruticosus aggregate) are amongst the worst environmental species.
By 2001, bitou bush was found along 900 km (80%) of the New South Wales coast and is the dominant plant species for 400 km.
In the case of bitou bush
, a serious weed in New South Wales, Victoria and South Australia, research by NSW Agriculture has found that many native species tolerate aerial spraying of low concentrations of glyphosate during winter, whereas bitou bush
was accidentally introduced from South Africa, then deliberately used to stabilise sand dunes after mineral mining.