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Non-native plants and weeds

Preventing the spread of significant weeds

Find out about how weeds are spread and recommended actions for prevention.

Preventing weed spread: advice for gardeners and outdoor enthusiasts

Find out how to control weeds in your home garden.

Managing weeds on your property

Find out how to control weeds and pest plants on your property.

Travelling in Cape York and the Torres Strait – protect Queensland from pests and diseases

Find out about the Coen Information and Inspection Centre, Cape York Peninsula.

Declared pests

Read frequently asked questions about declared pests in Queensland.


Weedbusters is an awareness and action program that aims to protect Queensland's environment, agriculture and other industries from weeds.

Weed Spotters’ Network Queensland

The Weed Spotters' Queensland Network includes more than 1,000 trained weed spotters who keep watch for new weeds in their local area and collect specimens of potential new weeds for identification by the Queensland Herbarium.

The Weed Spotters Network Queensland bulletin includes information about new and emerging weeds.

How to identify weeds

Biosecurity Queensland have a full listing of declared species and other invasive plants. Other useful resources are available to help with weed identification.

Weeds–Queensland Herbarium

The Queensland Herbarium produces the Census of the Queensland Flora that lists the native, naturalised and doubtfully naturalised species.

We are working with the community and Biosecurity Queensland to monitor how non-native plants are introduced and naturalised in Queensland and to detect potential new weeds through the Weed Spotters’ Queensland Network.

Naturalised species are those that have successfully established themselves outside their native habitat by reproducing there without cultivation or human intervention.

Many species have become naturalised in Queensland since European settlement. Most originated outside Australia and were imported for food, fodder, as ornamentals, or by accident. A few are native species that have spread to new areas outside their natural distributional range.

In Queensland:

  • Naturalised species are increasing at a rate of approximately 10 new species becoming established each year
  • There are 1,326 species naturalised in Queensland (2016 data). More than 100 of these are declared pests and there are an additional 360 species listed as doubtfully naturalised.

Four Tropical Weeds Eradication Program

Find out more about the Four Tropical Weeds Eradication Program and the 6 weed species it targets.

Creative Commons Attribution 3.0 Australia (CC BY 3.0)
Last updated
20 March 2018
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