Declared plants

To protect Western Australian agriculture the Department of Primary Industries and Regional Development regulates harmful plants under the Biosecurity and Agriculture Management Act 2007.

Plants that are prevented entry into the State or have control or keeping requirements within the State are known as declared pests.

The Western Australian Organism List (WAOL) contains information on the area(s) in which a plant is declared and the control and keeping categories to which it has been assigned in WA.

If you need advice on declared plants please search for articles below in our website or:

Articles

  • What you should know about red witchweed (Striga asiatica).

  • This article provides information on aquatic weeds that are declared plants in Western Australia. Prevention is the cheaper option!

  • Some aquatic plants used in ponds and aquariums are highly invasive and have become serious weeds in natural waterways.

  • The opuntioid cacti are Weeds of National Significance, recognised for their agricultural, environmental and social impacts and the associated economic costs.

  • This page contains useful information about cleavers (Galium aparine) and how to identify it.

  • This article contains useful information about mesquite (Prosopis spp.) and how to identify it.

  • This page contains useful information about Noogoora burr (Xanthium strumarium) and how to identify it.

  • This article contains useful information about Paterson's curse (Echium plantagineum), how to identify it and biological control agents.

  • What you should know about gorse (Ulex europaeus).

  • This article contains useful information on physic nut (Jatropha curcas) and bellache bush (Jatropha gossypiifolia) and how to identify them.