Se vedete questa pianta in giardino, chiamate un professionista, perche' e' una pianta altamente pericolosa per la struttura della vostra casa. In presenza di piante simili spesso le banche non concedono mutui prima che venga debellata.
The fast-growing weed, which can grow through brickwork and concrete, is estimated to cost £165 million a year to control in the UK. It has a root system that can extend up to three metres in depth and seven metres in all directions and grow into building foundations and drains, causing serious structural damage. Mortgage lenders can refuse loans for homes blighted by the problem. But poor advice on websites and provided by some councils could be causing needless worry and expense, according to scientists from the University of Exeter. The researchers found knotweed guidance on websites run by NGOs, weed-control firms and local government varied wildly, and was sometimes "contradictory and potentially misleading".