Japanese Knotweed & Railway Embankments

Over the past few weeks, our surveyors have been busy supporting Japanese Knotweed projects on and around the Scottish Rail network.

It is also very common for our teams to visit residential and commercial properties that are located immediately adjacent to railway.

So why is Japanese Knotweed so prevalent around UK railways?

Japanese Knotweed has an intriguing and troubled history with rail infrastructure in the UK.

During the Victorian era, railway companies were on a mission to create picturesque landscapes along their tracks. Japanese Knotweed, with its lush foliage and rapid growth, seemed like an ideal candidate to beautify the railway embankments.

Little did they know, this “exotic” plant had a hidden agenda. Japanese Knotweed’s incredible ability to spread rapidly through its underground rhizomes turned it into an invasive species. As it grew unchecked, it began to overpower native vegetation along the railways.

The Dangers of Japanese Knotweed

Over time, Japanese Knotweed proved to be a tenacious invader, capable of causing serious ecological damage. It formed dense thickets that choked out native plants, reducing biodiversity in the affected areas. Additionally, its deep and extensive root systems caused structural issues for railway infrastructure, posing a threat to tracks and embankments.

The allure of Japanese Knotweed soon turned into a big challenge for railway authorities, as controlling its spread became an uphill battle. Eradication efforts were complicated, as even the smallest fragment of the plant could regrow into a full-fledged infestation.

Today, the battle with Japanese Knotweed continues, serving as a stark reminder of the unintended consequences that introducing non-native species can have on delicate ecosystems!