I feel so bad for anyone battling Japanese knotweed. (Reynoutria japonica), but especially bad for new homeowners, who usually had no idea that they were buying a property with this on it. It can take over your yard, cause major damage to foundations and septic systems and decrease the value of your property. It looks like bamboo and pokeweed but isn’t. It is also taking over wetlands, edges of forests, highways and many other areas. It’s invasive in many parts of the US and other parts of the w