Weeds management

Weeds are a major threat to our unique natural environment, threatening the survival of hundreds of native plants and animals in NSW alone. They also impact on the price of food, human health through allergies and asthma, recreational activities and the NSW economy. 

Weed management is an essential activity which safeguards our economy, environment and community. We manage weeds in accordance with the NSW Biosecurity statutory framework and associated tools. 

Under the Biosecurity Act 2015 everyone has a legal obligation to manage weeds on land that they own or occupy. In NSW, any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable. 

What is a weed?

Weeds can mean different things to different people or in different areas, but generally they can be described as plants growing outside their natural environment with an adverse impact on the economy, environment or local community. 

A plant may be called a weed if it is:

  • Not native to the area, including plants introduced from overseas or from far parts of Australia;
  • Able to grow quickly - weeds are often the first plants to grow in disturbed soil;
  • Able to reproduce more than other plants - some weeds produce thousands of seeds from a single flower; and 
  • Able to reproduce in multiple ways - a willow can grow from a cut branch resting on the soil.

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Related information

Weeds in Australia

NSW Department of Primary Industries - NSW WeedWise

CSIRO - Weed Biological Control

NSW Department of Primary Industries - Weed