Japanese knotweed is unlikely to cause significant structural damage to buildings indirectly by subsidence, or by collapse, as in a tree-fall. Japanese knotweed does however cause damage, both by its above ground canopy exerting pressure on adjacent walls/fences, but also by its expanding network of underground rhizomes and roots, and, for mature stands, its crown. Read more about the impact of knotweed on property in MD Nic Seal's blog.

Our short video of Japanese knotweed damage illustrates some of the damage caused by the species that we've come across over the years.

Japanese Knotweed damage
Japanese knotweed damage
Pictures of Japanese knotweed damage

 

Japanese Knotweed damage
Pictures of structural damage caused by Japanese knotweed
Pictures of Japanese knotweed damage

 

 

 

japanese knotweed crown

 

Japanese knotweed pictures showing damaged caused
Pictures of structural damage caused by Japanese knotweed
Pictures of Japanese Knotweed growth