Although a much slower method than the excavation of Japanese Knotweed, a herbicide treatment is an economical method of eliminating this tenacious plant. Landtech (UK) Limited have a team of NPTC and BASIS qualified technicians. These qualifications are a legal requirement for giving advice on applying herbicides. In addition, we offer a 10 year insurance backed guarantee with all Japanese Knotweed treatments to satisfy mortgage lenders.
* If it is suggested that multiple applications in any one year are necessary, you are being misled. In most cases multiple applications are counterproductive as can result in simply damaging the plants rather than killing them. This can make control in subsequent years more difficult as the plants are distorted with reduced leaf area to absorb the herbicide.
Foliar Spray Application - This is normally the most economic, killing 95% of plants in the first year.
Stem Injection - This involves injecting the stem with a herbicide using a specialist gun. This method is highly effective but rarely justifies the cost over foliar spray except over small areas or areas where other vegetation needs to be preserved.
Stem Filling - This involves cutting the Japanese Knotweed off just above the first node and filling the hollow stem with herbicide. This is a very effective technique but disposal of the cut green stems can often prove expensive.