The first thing to do when you discover Japanse Knotweed on or near your property is to not ignore it. Left untreated the knotweed can grow at amazing rates (upto 10cm a day above ground and 1 meter per month underground) damaging yours and your neighbours properties. If it is growing on your ground you could be liable for the damage caused to other properties.
This particular weed has been given a strict code of practice by the Environment Agency because it is so serious to help those who are affected. The code of practice is aimed at professional Japanese Knotweed Removal specialists but it is good to read as it will give you an idea of what to expect if you need to contact a knotweed removal company.
Things to look for when using a professional knotweed eradication company:
- For complete Japanese knotweed excavation, your contractor will have to be registered with the Environment Agency as they will be certified to dispose of the weed.
- Small cases of knotweed can be treated using herbicides and careful excavation, but remember, this can take up to 3 years to completely eradicate all traces and all soil that is effected will have to be disposed of as stated in the official code of practice mentioned above.
- Japanese Knotweed waste can be in burnt but you should inform your local authority for guidance on this.
It is good practice to consult a professional knotweed remover before carrying out any DIY eradication yourself, but due to the conditions and regulations tied to this type of weed removal it is no wonder that most people employ a contractor to get the removal done properly.