Prevention is the most effective method of dealing with weeds. Once a weed has entered an area and become established, eradication is far more expensive and it is likely that greater resources will be required to control its further spread and reduce its impact. In the home garden choosing plants that are unlikely to become weeds in your area and removing potentially weedy plants and disposing of them through approved channels is essential. Spreading mulch over soil surfaces in the garden will reduce weed growth.
On small holdings the spread of most weeds occurs through the movement of goods, animals and vehicles contaminated with weed seeds. You can reduce the risk of spreading weeds by buying certified weed free fodder and seed wherever possible. Washing down vehicles that have been in known weed infested areas also helps with pest and disease reduction. A guide is available on ;
If possible quarantine any weed infected stock or feed and monitor weed infestations and carry out control works regularly. Early detection and quick, coordinated responses are needed to eradicate or contain species before they become too widespread and control becomes technically and/or financially impossible.