Environmental issues

Pests and weeds


Environmental weeds reduce the diversity and/or abundance of native species or adversely affect the function of natural ecosystems. They can do this by forming dense stands that shade and smother native species or by altering natural disturbance regimes such as fire frequency. This can have profound effects on the structure and diversity of vegetation communities.

In addition, weed infestations can reduce the aesthetic appeal of our natural environment for public recreation and appreciation, and invade neighbouring properties where they may reduce agricultural production. Unlike native plants, introduced weeds have no natural predators or diseases in their new environment.

Most of the state's environmental weeds were initially introduced as garden plants. In some cases, their seeds were dispersed across the landscape by birds, animals or the wind. In other cases they have escaped out of gardens or spread into bushland areas from dumped garden waste.

This section offers descriptions of major weeds in NSW and a broad range of weed management and information links and resources.

NSW weeds

Find out which weeds are common in your area of NSW and which organisations are working to prevent the spread of weeds in your region.

Weed identification

Take a look at online resources available to help you identify weeds in your area.

Weed control

Find out who is responsible for weed control in your area, methods of weed control, strategies to control weeds across NSW and how to get involved at a community level.

Information for weed managers

The Australian Government weeds website has good information on how to manage weeds.

Other weed-related resources

Find out about weed management educational opportunities, and browse weed and botanical resources from Australia and around the world.

Page last updated: 21 September 2012