Japanese Knotweed is NOT bamboo. It is even more invasive and almost impossible to eradicate. Look it up on Google. We "inherited" a huge swath of it when we moved to the country in Ontario. We spent the next 8 years trying to beat it back, with very little success. It sends out suckers that can be up to 15 meters long, and every part of it will reconstitute and grow more plants. It will grow through concrete paving, or anything else that is in its way. Don't EVER be tempted to buy it at a garden centre. In fact, if garden centres in your area are stocking it you should inform them that it is a noxious weed and they should get rid of it - and probably the only way will be by poisoning it.
Japanese Knotweed is NOT bamboo. It is even more invasive and almost impossible to eradicate. Look it up on Google. We "inherited" a huge swath of it when we moved to the country in Ontario. We spent the next 8 years trying to beat it back, with very little success. It sends out suckers that can be up to 15 meters long, and every part of it will reconstitute and grow more plants. It will grow through concrete paving, or anything else that is in its way. Don't EVER be tempted to buy it at a garden centre. In fact, if garden centres in your area are stocking it you should inform them that it is a noxious weed and they should get rid of it - and probably the only way will be by poisoning it.