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:


  • Control methods for bellyache bush (Jatropha gossypiifolia), a declared pest in Western Australia.

  • Control method for mesquite (Prosopis species) declared pests in Western Australia. Report the presence of this organism before undertaking a control measure.

  • Recommendations for the control of declared plants in Western Australia (WA).