Japanese knotweed is a contentious plant that can depreciate the value of a property and cause conflict between neighbours. The invasive plant is known for spreading quickly and for monopolising gardens. Japanese Knotweed damage can be severe as the plant can damage property foundations, flood defences and walls. Knotweed grows in large patches that can quickly push out any other competing plant life. Thankfully, Japanese knotweed is easy to identify, so homeowners can waste no time in getting a treatment plan in place to get rid of the plant.