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What is a weed?
What is Council doing to stop the spread of weeds?
What can you do?
Council as an authority
Weed Control on Public Land
Weed Classification
What is a weed?

In the Sydney Central Region many parks and bushland reserves are under threat from a variety of invasive plant species known as weeds.Many common garden plants are spread by birds, wind, storm water and through the dumping of garden clippings into our parks and bushland reserves.

Weeds generally grow vigorously and compete with native plants for light, space, nutrients and soil moisture. Weed infestations have the potential to completely change the natural character of our bushland reserves reducing the available habitat of many native plant and animal species.

Weeds may be declared noxious if they pose a significant risk to human health, the environment, animals or the agricultural industry. Noxious Weeds are plants that must be controlled under the NSW Biosecurity Act 2015. It is the responsibility of the owners of private land as well as their occupants to ensure that reasonable and effective measures are taken to control infestations of noxious weeds.

In NSW all plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. 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.

For an up to date list of plants that are declared noxious in the Strathfield local government area, visit the Department of Primary Industries website.

What is Council doing to stop the spread of weeds?
  • Managing bush regeneration contractors in significant natural areas in the Strathfield Municipality
  • Working closely with the Sydney Central Regional Weeds Committee to control weeds on a regional basis
  • Implementing Local and Regional Weed Management Plans developed by the Weeds Committees and the Department of Primary Industries
  • Coordinating the Strathfield Council Bushcare program
  • Carrying out weed control measures in Parks and Reserves
  • Private property inspections and education regarding obligations under the NSW Noxious Weeds Act 1993
  • Promoting weed control in the Strathfield Community through displays, information sessions, local advertising and the distribution of brochures.
What can you do?
  • Remove any noxious weeds using appropriate control measures
  • Never dump garden waste in parks or bushland reserves
  • Compost garden clippings at home or place in Council green-waste bins for collection
  • Don’t over fertilise your garden as excess nutrients may wash into waterways promoting weed growth
  • Replace unwanted plants with locally indigenous species — Grow Me Instead booklets are available free of charge at the Customer Service Centre
  • Join the Strathfield Council Bushcare program.

For more information, please refer to NSW Weed Wise. This site lists over 300 weeds species that includes profile, control and legal requirements.

Council as an authority

Council is recognised as a local control authority (LCA) under the Biosecurity Act 2015 and is responsible for the control or eradication of invasive weeds. As a local control authority Council’s responsibilities include but are not limited to:

  • The inspection of properties
  • Assistance with weed identification
  • Provision of advice on weed eradication or control measures
  • Notification of the presence and dangers of invasive weeds on both private and public lands.


The Biosecurity Act 2015 includes a number of mechanisms (regulatory tools) that can be used to manage weeds in NSW, these are outlined below. The Biosecurity Act 2015 and Regulations provide specific legal requirements for high risk activities and state level priority weeds.

Prohibited Matter: biosecurity matter listed in Schedule 2, Part 1 of the NSW Biosecurity Act 2015 for the purpose of preventing entry of that matter into NSW or a part of NSW. Prohibited matter relevant to the region is listed in Appendix A1.1 of this plan. Prohibited matter includes weeds nationally targeted for eradication and presently not in NSW.

Control Order: establishes one or more control zones and related measures to prevent, eliminate, minimise or manage a biosecurity risk or impact. Control orders are for managing weeds under approved eradication programs and last for five years (or can be renewed for longer-term eradication programs). Weed Control Order 2017 (Part 6 Division 1) under the NSW Biosecurity Act 2015 will include weeds that are subject to a Control Order for the purpose of eradication. Further Control Orders will be proposed as needed to address subsequent eradication campaigns.

Biosecurity Zone: aims at containment of a species and provides for ongoing strategic management in a defined area of the state. A Biosecurity Zone specifies the measures that must be taken in the defined area to manage the weed. Species may also be subject to other measures tailored by the region either within the zone or outside it.

Mandatory Measures Regulation: requires parties to take specific actions with respect to weeds or carriers of weeds. Mandatory Measures are defined in the regulations and include prohibition on certain dealings – including Weeds of National Significance (WoNS) (Division 8 Clause 33), Parthenium weed carriers – machinery and equipment (Division 8 Clause 35), and duty to notify of importation of plants into the state (Division 8 Clause 34). Mandatory measures relevant to the region are listed in Appendix 1.

Weed Control on Public Land

The management of weed species on public land will be conducted in areas where long-term control programs will deliver the greatest benefits to ensure the long term protection of Strathfield LGA’s natural ecosystems and habitat, public health and social amenity.

On public land with bushland, weeds will be priority managed where they are impacting on:

  • Threatened species and wildlife corridors
  • Areas that contain greater conservation value
  • Council bushland maintained by Council staff, contractors and volunteers e.g. Bushcare programs
  • Health and safety for recreation

In parks, reserves and sportsgrounds, weeds will be priority managed where they are impacting on:

  • Health and safety for recreational users
  • Native vegetation or natural areas
  • Aesthetic values

In road reserves, footpaths and carparks, weeds will be priority managed where they are impacting on:

  • Vision of vehicular traffic
  • Health and safety of pedestrians
  • Native vegetation or natural areas

The control of weed species will conform to Council’s responsibilities under the relevant legislation.

  • Weeds will be assessed on a risk base and in accordance with the General Biosecurity Duty, Mandatory measures, Greater Sydney Regional Strategic Weed Management Plan 2017-2022, Control Orders, Biosecurity Zones and Prohibited Matter.
  • Weeds will potentially not be removed if the area is considered a low priority or if the weeds are providing important habitat to native fauna and their removal would negatively impact the wildlife.

Prevention of Further Spread of Weeds

To prevent the further spread of weeds, Council will:

  • Ensure all works on Council lands do not include planting of invasive species or environmental weeds that may in the future be listed as weeds.
  • Ensure landscape and erosion control materials used by Council (such as topsoil and straw bales etc.) are free of weed seeds and propagules.
  • Ensure council staff and contractors do not discard vegetation material (e.g. lawn clippings) into natural areas.
  • Investigate and prosecute illegal dumping in natural areas.
  • Educate to prevent spread of weeds and their management.
  • Monitor the presence and extent or spread of weeds in the Strathfield LGA.
  • Council will not encourage the sale of weeds species in the cut flower or nursery industries.
Weed Classification

Weeds of National Significance:

Under the National Weeds Strategy, 32 introduced plants have been identified as Weeds of National Significance (WONS). A list of 20 was endorsed in 1999 and a further 12 were added in 2012. These weeds are regarded as the worst weeds in Australia because of their invasiveness, potential for spread, and economic and environmental impacts. List of Weeds of National Significance.

National Environmental Alert List weeds:

Under the National Weeds Strategy, 28 environmental weeds were identified National Environmental Alert Weeds. Alert Weeds are non-native plant species that are in the early stages of establishment and have the potential to become a significant threat to biodiversity if they are not managed. List of National Environmental Alert Weeds.

Native plants considered weeds

Some Australian native plants have become invasive in areas beyond their natural range or habitat. This is partly due to their popularity as ornamental plants, and partly due to landscape changes. Many areas of native vegetation are protected in Australia. Always check native vegetation requirements before undertaking control of a weedy native plant. List of native plants considered weeds.

Water weeds

Freshwater ecosystems are highly vulnerable to invasion by weeds. Many exotic plants have been accidentally or deliberately introduced into waterways in New South Wales, and have become widespread. Do not deal with these water plants in NSW.