Invasive Plant Management

Below are descriptions of common invasive plant (weed) management methods:

• Spread prevention
• Prescribed measures for the control of noxious weeds
• Change in land use practices
• Biological control of weeds

Please note: Where a land owner is served with a Notice under the Catchment and Land Protection Act 1994 for the eradication or control of noxious weeds, one or more of the prescribed measures described in that Notice must be undertaken in order to comply with that Notice. It is recommended that these prescribed measures are also used when undertaking any noxious weed control as they have been determined to be the most effective control measures for a given species

Why manage invasive plants?

Invasive plants present a significant threat to Victoria’s primary production, biodiversity and social amenity. It is estimated that invasive plants and animals cost Victorian agriculture over $1 billion annually in lost production and control costs alone. Environmental costs are estimated to be of a similar magnitude.

Who is responsible?

We all have a role to play in invasive plant management. By working together, government, industry and the community can best protect Victoria from these serious weed threats.
Land owners and managers have a particular role to play and are required by law to manage declared noxious weeds on their property.

For more information on your responsibilities as a land owner, see Noxious Weed and Pest Animal Management: Your legal roles and responsibilities’

Management principles

Invasive plants (weeds) may be managed using a variety of methods. The most effective management is usually achieved through a combination of techniques. Combining techniques to manage invasive species is also known as integrated management.

In general, the principles of a successful weed management program are:

• Clean (or weed free) areas should be managed to keep them free of infestation.
• Lightly infested areas should be treated as a priority to minimise further spread.
• Heavily infested areas should be tackled progressively as part of a property management plan. Repeated treatments will be required.

Things to consider before you begin

It is important not to disturb native vegetation, culturally significant areas or waterways when undertaking weed control works. You will need to consult with the responsible authority to seek advice on the best approach for your circumstances. Contact the Department of Sustainability and Environment, Department of Planning and Community Development and/ or your relevant Catchment Management Authority prior to commencing control works.

Work with your neighbours and encourage everyone to work together to control weeds at the same time. This will help to reduce re-infestation from neighbouring properties and reduce the amount of follow up control work required.

Contact your local Landcare group who will be able to provide advice and information that will assist your weed management program. They may be able to provide equipment, financial assistance or help coordinate a community program. More information about Landcare can be found at: http://www.landcarevic.net.au/

A long-term approach, regular monitoring and vigilance is necessary to successfully control weeds and many years of follow-up treatment may be required. This is because many weeds will regrow from seed and other plant parts stored in the soil.

Always remember to “treat your weeds before they seed”.