Spread of Chilean needle grass
Chilean needle grass panicle seed is large and heavy and will not travel very far in the wind, maybe only a few metres.
Chilean needle grass infestation
- Seed spread is facilitated by the long, twisting awn and the sharply pointed seed head which together allow the seed to penetrate and 'burrow' into animal coats, fleece and clothing.
- Chilean needle grass seed can also be carried in mud on the hooves of livestock, machinery and implements, on vehicle tyres, in contaminated hay and on firewood.
- Chilean needle grass panicle seed can be dispersed by water along creeks and drainage channels.
Avoid the introduction of Chilean needle grass
- Preventing the invasion of Chilean needle grass is the cheapest and most effective means of control.
- Learn to identify Chilean needle grass, regularly check for it and act immediately to remove it.
- Regularly monitor known Chilean needle grass infested areas.
- Appropriately dispose of any panicle seed collected.
- Encourage the growth of competition in infested areas.
- If possible avoid working in an area infested with Chilean needle grass until it has been controlled.
- See the
Weed and Disease Planning and Hygiene Guidelines for detailed information on how to wash-down equipment and personnel to reduce the chance of spreading Chilean needle grass.
- Before undertaking control works confirm that the species you intend to control is in fact Chilean needle grass as the plant you are dealing with may be a native Tasmanian grass.
- The following information is for the control of small populations of Chilean needle grass in urban environments including roadside reserves and native grassland situations.
- For identification and advice on the control of populations in pasture situations or larger infestations contact Biosecurity Tasmania on 03 6165 3777.
- Small infestations and isolated Chilean needle grass plants can be chipped out with a mattock preferably before the plants set seed. Ensure that the base of the plant and as much of the root as possible is removed.
- Do not chip out large patches of Chilean needle grass where a seed bank has built up: any soil disturbance will cause the germination of seeds.
Chilean needle grass can be controlled with the application of a herbicide. See
Chilean Needle Grass - Herbicides for Control
for further information.
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