Japanese knotweed can grow at a rate of 20mm a day so it can appear seemingly out of nowhere. Whether you’ll have to deal with it or not might also depend on whether the knotweed was there when you moved in, and whether the knotweed originated on your property or one of your neighbours’. Therefore, a survey may help you ascertain the source of the knotweed.
Get in touch with your landlord as soon as you discover the Japanese knotweed – knotweed can cause structural damage. Even if it is your responsibility to keep the garden tidy, your landlord may help with the cost of removal. This is because it can damage the structure of the building, or other nearby buildings.
Japanese knotweed is more likely to grow in certain high-risk areas. Including, but not limited to, railway lines, waterways, motorways, recently cleared land, industrial land or landfill sites.