High profile weeds found in the area include:

  • Parthenium
  • Giant rats tail
  • Parramatta grass
  • Honey locust. Infestations of established honey locust trees present in Toowoomba and parts of the Condamine river system are a concern and are currently being monitored to prevent possible dispersal into surrounding areas.
  • Chilean needle grass. Chilean needle grass currently infests a number of properties in the Clifton district & Toowoomba City area with large roadside infestations resulting from movement of stock, plant and equipment.


Restricted matter in the region

Restricted matter is biosecurity matter (e.g. animal or weed pests) that requires action to be taken to minimise the spread and adverse impact of the matter or requires restrictions to be placed on dealings with the matter.

A full list of declared weeds (now referred to as invasive biosecurity matter) can be found in the Toowoomba Region Pest Management Plan 2014 - 2018.


Weed information

A-Z list of weeds


Weeds of particular interest in the region

Bridal creeper

Honey locust

Chilean needle grass

African boxthorn

Annual ragweed


Fireweed (Scenecio Madagascariensis)

Groundsel bush

Harrisia cactus

Mother of millions

Parthenium weed

Prickly pears

Sporobolus grasses

Water weeds