Treatment of your Japanese Knotweed
Spraying
Herbicide Application.
Japanese Knotweed can be treated in situ with the use of herbicides, this is a far more cost effective method that typically costs just 10-15% of the price of excavation and removal from site by physical/mechanical means. Specialist herbicides are required and these are to be applied by competent and trained technicians.
Stem Injection
Weed wiping is when a hand held wiper / sponge is used to apply the herbicide onto the leaf surface of the knotweed,weed Wiping
The use of herbicides is often the most effective option for the control of Japanese Knotweed
Stem injection is a method whereby herbicide is injected into the lower part of each mature stem of knotweed
To apply the herbicide directly to the leaves of the plant . This ensures that only target plants are treated.
Spraying should be carried out between May and October with is considered to be the optimum period of application. Ideally 2/3 treatments would be applied during this period.