Is Japanese Knotweed Really A Problem?


Japanese Knotweed (knotweed) is increasingly becoming a scourge throughout Ireland and be found in all counties. The problem is also being compounded by confusion and lack of knowledge by land and property owners.

Knotweed can cause damage to infrastructure as it can export the smallest flaw in concrete and tarmac and gradually push its way through just about any building material.

Knotweed also damages ecosystems and biodiversity as it grows fast and shades out other native species.

Knotweed myths and facts and fiction: -

Q. Can knotweed grow through concrete?

A. The simple answer is no!

Knotweed Growing Through Tarmac