Japanese Knotweed has spread widely throughout Britain and has caused lots of damage to number of commercial and domestic sites. It is said that today, these species have occupied a site in every 10km area in England. It is also present in some of parts of Europe and Scotland. They greatly damage foundations, brick walls and concrete. Though people say that knotweeds prefer sunny location but it is not always true because they have the resistance to stand even the extreme environmental conditions.
Below listed are a few problems that are caused by them:
- Pitch areas are damaged
- Damage to paving and
- Cause damage to wall structures
- Harm foundations of building
- Damages various archaeological sites
- Reduces value of land
- Causes various Aesthetic issues
- Is dangerous for many insects
Knotweed is aggressive and grows extremely quickly. Just within a week a small plant can grow up to a foot. A root fragment of half inch can produce hundreds of plants. Ecological consultants say that if not noticed then these knotweeds can destroy wildlife, vegetation and even wildlife habitat.