Supporting the community in tackling weeds and pest animals


Weed control

Chemical brands

Chemical brands mentioned on this site are for no other reason than that they are well known local brands. Other brands are available with the same chemical ingredient at rural supply stores. To find all registered chemicals for a particular noxious weed visit the Australian Pesticide and Veterinary Medicines Authority website. A link to their web page is here. Search by state and type the disease/pest in question, (common name is ok) to find the registered chemicals.

Off Label *

In Victoria off label use (not exceeding the maximum rate on the label) is permitted except for restricted chemicals requiring an ACUP e.g Grazon. Off label permits can be applied for at the Department of Environment and Primary Industries (DEPI) or Australian Pesticide and Veterinary Medicines Authority. Off label use can be quite complex and it is recommended that enquiries be made in the first instance with the DEPI. The DEPI website does have good info on chemical use rules. A link to their web page is here


Weed Management Principles

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. If looking to undertake weed control works in these areas, 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 here.

A long-term approach, regular monitoring and vigilance is necessary to successfully control weeds and, if the property is heavily infested, many years of follow-up treatment will 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”.

Non-Chemical Control Methods Explained

Biological Control 

Biological control is the use of one living species, the agent, to control an unwanted species, the target. Agents can be diverse, and weeds are commonly controlled by introducing bacteria, viruses, fungi and insects that inhibit their growth. Biological control can’t eradicate a pest species, but it can reduce the weed population and slow down invasion. It can be a lengthy process and results may vary as weed growth varies according to climate and land use.

Cultivation

Cultivation has two main objectives, to prevent seeding and to destroy existing plants.

Fire

Controlled burning for the management of  large woody weed infestations to enable access for follow up control treatments such as hand removal or (if using chemical) foliar spraying or cut and paint methods. Follow up essential. Many safety concerns. Consult CFA and DSE/CMA (if infested area involves public land).

Hand Pulling 

Very effective in small areas or with isolated plants. Some plants will regenerate unless all root material is removed.

Mechanical– Use of Machinery  

Suitable for initial removal of large infestations of woody weed to enable access for follow up control treatments such as hand removal or (if using chemical) foliar spraying or cut and paint methods. Ensure machinery is cleaned down before moving to a new area.

Mulching/Smothering 

Involves placing a thick layer of material on the ground surface which weeds struggle to penetrate.

Pasture Improvement/Re-vegetation 

The aim of the game for weed control is to ultimately  replace weeds with plants that we do want.  Once weeds are down to a manageable level, plant competition is an important means of weed control.

In a pasture situation, increasing competition through good grazing management and addressing soil fertility will help to control many weeds. In fact, once competitive pasture is established, the pasture weeds drop out the picture altogether as is the case with certain weeds in a bushland environment. In areas where you want native vegetation, weed control programs should include revegetation using suitable native plants.

Slashing or Mowing 

May be used to delay seed production until a more suitable means of control can be undertaken. Care must be taken as weeds, if in seed, can spread easily using this method.

Solarisation

A technique that blocks light and uses the heat from the sun to ‘cook’ weeds. Usually involves covering the infested area with a plastic sheet, sealing it tight and leaving it in place for several weeks. Suitable for plants that grow along the ground i.e. creepers. Adequate sunlight is required for this technique to be truly effective.

Chemical Control Methods Explained

Cut and Paint 

Suitable for many woody weeds and some climbing creepers. The plant is cut off close to the ground and herbicide is immediately applied to the cut surface. A staggered pruning technique may be used for larger trees with herbicide applied at the last cut.

Drill and Fill

Chips or frills are made into the trunk of a woody weed close to the base of the trunk with an axe or tomahawk with herbicide immediately applied to the cut surface. Cut to penetrate through the hard outer bark to just into the soft bark layer.  Alternatively, an angled hole can be drilled into the sapwood just below the bark and herbicide immediately apply the herbicide.

Scrape and Paint

A variation of cut and paint that is more appropriate for treating large woody, vine-like weeds. The outside bark of a vine is removed with a knife and the exposed inner tissue is immediately  applied with herbicide.

Foliar Spray

An appropriate applied as fine droplets to the surface of foliage using a knapsack or spray unit.

Grazing 

Use stock such as goats, sheep and cattle.

Weed Identification and Control

SGLN Facebook

South Gippsland Landcare Network

We acknowledge the Traditional Owners of the land on which we work and meet. The South Gippsland Landcare Network stretches from Mt Best to Mt Lyal, and along the prom coast. It’s made up of 16 local groups working to preserve and protect the natural environment, while also enhancing the long-term sustainability of farming in this part of Victoria. We’re proud to work across both Bunurong and Gunaikurnai country, and to recognise the rich history embedded in this land we now share. As a network, we’re a diverse group – made up of primary producers, hobby farmers, tree changers, backyard gardeners and environmentalists of all sorts. This page is part of our community, so we welcome feedback and input from anyone who’s interested in having a voice here.
South Gippsland Landcare Network
South Gippsland Landcare Network
Confused about Acknowledgement of Country?

A Welcome to Country or an Acknowledgement of Traditional Owners recognises the continuing connection of Aboriginal Traditional Owners to their Country.

This map (https://achris.vic.gov.au/weave/wca.html) allows you to find out who the formally recognised Traditional Owners are for an area.

1. Search for a location
Enter a location (such as a street address or the name of a town) into the search window located on the toolbar above the map.

2. Hover and click on the map
When the map has navigated to that location, hover your mouse cursor, and left click, over the location where your event or function will be held. It will display the name of the formally recognised Traditional Owners of the area.

This name can be referred to for Acknowledgements.

Click on the map to bring up information about the formally recognised Traditional Owner corporation and the Traditional Owners represented for Acknowledgements.

3. Click on the links provided to contact the formally recognised Traditional Owners corporation
Links are provided (where available) which take you to the corporation’s website to arrange a Welcome to Country ceremony.

4. Show formally recognised Traditional Owners boundaries (if desired)
Click this button on the toolbar to toggle on/off map layers that show the formally recognised Traditional Owners boundaries.
South Gippsland Landcare Network
South Gippsland Landcare Network
This SGLN publication is relevant to all areas lucky enough to have koalas. It's an easy read with some great photos and tips for living compatibly with these much-loved marsupials.
https://www.sgln.net.au/wp-content/uploads/2017/03/SGLN_Koala_Brochure.pdf
South Gippsland Landcare Network
South Gippsland Landcare Network
Working bee at Hamann's Bush Reserve

Members of the Arawata and Nerrena Tarwin Valley Landcare Groups combined forces last month at a twilight working bee at Hamann's Bush Reserve in Leongatha North.

The main purpose of the working bee was to tackle the problem of sweet pittosporum (Pittosporum undulatum). Although native to Australia, sweet pittosporum is a serious problem when it extends outside its natural range. As well as creating a dense canopy, it releases chemical inhibitors (saponins) which prevent indigenous plants from growing beneath. It is also highly flammable.

There was a lot of discussion at the working bee about the best way(s) to kill sweet pittosporum. The following methods were used:

Remove by hand
Hand removal is only recommended for very small plants, ensure the root system is removed and the disturbed area is covered over with mulch to reduce spread of other weeds.

Cut and paint
Cut plants off at ground level and immediately paint the stump with an undiluted glyphosate based product. This is useful for larger seedlings that are too hard to hand pull but should not be attempted on trees with trunks greater than 50mm as they are likely to resprout.

Drill and fill
Drill holes 2-3 cm deep and about 5 cm apart, at the base of the trunk. Fill the hole immediately with an undiluted glyphosate-based product. This technique should be used for plants greater than 50mm in diameter and is best done in active growth stage which is late spring and mid-autumn.

Please send in photos of your get-togethers to admin@sgln.net.au - we'd love to publish them.

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