Weeds of National Significance

To help focus national efforts to address weed problems in Australia, a list of Weeds of National Significance was compiled. Plant species were selected on the basis of their invasiveness and impact characteristics, their potential and current area of spread and their primary industry, environmental and socioeconomic impacts.

In Western Australia many Weeds of National Significance are also declared pests under the Biosecurity and Agriculture Management Act 2007.

To protect Western Australia’s agriculture the Department of Primary Industries and Regional Development:

  • regulates weeds under the Biosecurity and Agriculture Management Act 2007
  • provides a weed identification service
  • provides information on weed control, crop weeds, regulated/declared plants and herbicides.

For advice on Weeds of National Significance in Western Australia search our website, the Western Australian Organism List or contact our Pest and Disease Information Service (PaDIS).

Articles

  • Control methods for Mimosa (Mimosa pigra) a declared pest in Western Australia. Report the presence of this organism before undertaking a control measure.

  • Control methods for serrated tussock (Nassella trichotoma) a declared pest in Western Australia. Report the presence of this organism before undertaking a control measure.

  • Wheel cactus (Opuntia robusta) is a declared pest in Western Australia (WA).

  • Water hyacinth, floating water hyacinth, (Eichhornia crassipes) is a declared pest in Western Australia (WA).

  • Opuntia species (except O.

  • Cylindropuntia species (exept C. californica) are Declared Pests in Western Australia.

  • Austrocylindropuntia species (except A. vestita) are Declared Pests in Western Australia.

  • Lantana, common lantana (Lantana camara) is a declared pest in Western Australia (WA).

  • Chilean needle grass (Nassella neesiana) is a declared pest in Western Australia (WA).

  • Pond apple (Annona glabra) is a declared pest in Western Australia (WA).