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One of the most well-known treatments for Japanese Knotweed is Herbicide Treatment.
The most common and preferred treatment method is a herbicide treatment. Therefore, the best time for Japanese knotweed to be sprayed is when the plant is actively growing. This is because the herbicide used is a systemic translocating herbicide. It is also most efficient on a warm, sunny day.Â
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We use various chemicals to treat Japanese knotweed, however, one is significantly stronger than what is available to the general public and the other is not available to the public in any form.
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Typically, we would carry out three treatments within the first season. Followed by two further years of monitoring to ensure there is no re-growth. A total of nine visits is typical, however more is sometimes necessary. Our pricing is fixed and all work is guaranteed!Â
The surveys are carried out by a PCA qualified surveyor and to the RICs guidelines, this forms the basis for all further recommendations on how to eradicate or remove the Japanese knotweed from site.
We treat the invasive weed by spraying it with a systemic translocating herbicide which is significantly stronger than herbicides available to the public. This kills both the top of the plant and the rhizome (root). If there are other plants in the area that need protecting then alternatively stem injection can be used.
Following this, monitoring is carried out in year two and if no growth is seen, we monitor for an additional year.
Finally, once the site is declared free of any invasive plants, a completion certificate is issued.
Please note that soil should not be moved off-site. It may still be classed as controlled waste as it could still be contaminated with dormant rhizome. It should instead be used in landscaping areas where it can be monitored.
Your 10-year guarantee starts once your certificate of completion is issued. We also offer a 10-year insurance backed guarantee as per industry standard.