There are various different methods of Japanese knotweed removal. A Japanese knotweed rhizome barrier may be used to prevent the local spread of the plant. This will prevent the spreading across a land boundary. The barrier is comprised of a thick sheet of plastic that cannot be penetrated by underground growth of the knotweed. The Japanese knotweed rhizome barrier is buried along the required margin.
Key corridors of Japanese knotweed spread, for example, watercourses and railway lines, can be monitored to identify invasion by the invasive weed as early as possible. Rapid Japanese knotweed control could then be undertaken to prevent the infestation from establishing. Fly-tipping is often a cause of Japanese knotweed material spreading, where sections of Japanese knotweed stem or rhizome are included in garden waste and other debris.
Improving the security of a landholding to restrict fly-tipping may help reduce the potential for Japanese knotweed invasion.
Imported soils should be sourced from a supplier that can confirm they are free of Japanese knotweed.
Where Japanese knotweed is already present on a landholding, its spread can be prevented. If the plant has been disturbed by development, for example, the Japanese knotweed has been run over by machinery then, you immediately need to stop work in the area.
Where possible, you need to identify machinery that was working in the area in contact with Japanese knotweed and prevent it from moving the weed elsewhere. It would be advisable to contact a Japanese knotweed specialist to gain advice on Japanese knotweed control and Japanese knotweed eradication. Another means of preventing Japanese knotweed from spreading would be to erect fencing. With Japanese knotweed control in some cases it is essential to install boot and wheel washing facilities to prevent spread of the plant out of known contaminated areas.
If the knotweed in the area has not been disturbed but the site where there is Japanese knotweed is active, or there is a risk that the plant could be accidentally disturbed, fencing should be erected around each Japanese knotweed stand to a distance of around 7 meters from the edge of the aboveground growth.
For control, ideally chestnut palling or metal Heras fencing should be used around the knotweed. Orange barrier net fencing can be useful as a temporary barrier though.
Using herbicide over several years is an effective method of Japanese knotweed eradication. Cutting the plant should be avoided as it is often ineffective and may result in accidentally spreading it further.
Key corridors of Japanese knotweed spread, for example, watercourses and railway lines, can be monitored to identify invasion by the invasive weed as early as possible. Rapid Japanese knotweed control could then be undertaken to prevent the infestation from establishing. Fly-tipping is often a cause of Japanese knotweed material spreading, where sections of Japanese knotweed stem or rhizome are included in garden waste and other debris.
Improving the security of a landholding to restrict fly-tipping may help reduce the potential for Japanese knotweed invasion.
Imported soils should be sourced from a supplier that can confirm they are free of Japanese knotweed.
Where Japanese knotweed is already present on a landholding, its spread can be prevented. If the plant has been disturbed by development, for example, the Japanese knotweed has been run over by machinery then, you immediately need to stop work in the area.
Where possible, you need to identify machinery that was working in the area in contact with Japanese knotweed and prevent it from moving the weed elsewhere. It would be advisable to contact a Japanese knotweed specialist to gain advice on Japanese knotweed control and Japanese knotweed eradication. Another means of preventing Japanese knotweed from spreading would be to erect fencing. With Japanese knotweed control in some cases it is essential to install boot and wheel washing facilities to prevent spread of the plant out of known contaminated areas.
If the knotweed in the area has not been disturbed but the site where there is Japanese knotweed is active, or there is a risk that the plant could be accidentally disturbed, fencing should be erected around each Japanese knotweed stand to a distance of around 7 meters from the edge of the aboveground growth.
For control, ideally chestnut palling or metal Heras fencing should be used around the knotweed. Orange barrier net fencing can be useful as a temporary barrier though.
Using herbicide over several years is an effective method of Japanese knotweed eradication. Cutting the plant should be avoided as it is often ineffective and may result in accidentally spreading it further.
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