Japanese knotweed (sometimes referred to as Asian knotweed) is a type of plant which is classified as a pest in many countries, including here in the UK.

It has this status as it is a highly aggressive and invasive species. So invasive that it has successfully managed to establish itself in new habitats all around the world.

The flowers are small and are usually either cream or white. With its hollow stems and distinct raised nodes, it looks a lot like bamboo, although the two are not related in any way.

Each growing season it’s possible for stems to reach a height of 3-4 meters or 10-13ft.

Is Japanese Knotweed a Problem?

Japanese knotweed is most definitely a problematic plant.

Its impressively powerful and aggressive roots can grow up to 20cm a day and break through concrete and tarmac.

Japanese knotweed growing through concrete

Because of this, Japanese knotweed has been responsible for untold amounts of damage to buildings, roads and pavements. This is causing a huge headache for both commercial and residential sites up and down the country.

The now infamous plant came to public attention in 2012, when it became publicised that some banks and lenders were refusing to give out mortgages on the basis that Japanese knotweed had been discovered in gardens or even at neighbouring properties.

Many people have had mortgages refused or been unable to sell their properties due to the mere presence of invasive plant species.

Countries around the world have tried to find new and innovative ways of dealing with the problem. The Dutch government recently broke its own policy of introducing alien species to its ecosystem in order to try and slow the spread of Japanese knotweed.

They hope that the introduction of 5000 Japanese leaf fleas – which feed on Japanese knotweed – will slow the spread and prevent further damage to city buildings and roads.

How did the plant get to the UK?

Back in the 1800s, before people understood the dangers Japanese knotweed posed to the local plant ecosystem, it was donated to the Royal Botanic Gardens by the German botanist, doctor and traveller Philipp Franz Balthasar von Siebold.

Von Siebold was renowned for his studies of Japanese flora and fauna, as well as the being known as the man who first brought Western medicine to Japan. His daughter, Kusumoto Ine, became the first female Japanese doctor.

Japanese knotweed quickly gained popularity among UK gardeners due to its similarities in appearance with bamboo. Not only that, but its ability to thrive anywhere made it easy to grow.

Japanese Knotweed Removal

JBB Knotweed Solutions Ltd provide specialist services for the professional identification, surveying, treatment and removal of Japanese Knotweed. All of our work is fully compliant with the strictest of industry standards. Banks and mortgage lenders will accept our guarantees.

Our removal services include carrying out in-depth site surveys and a range of treatment options. This includes herbicide, excavation, relocation and disposal.

We have a great deal of experience removing Japanese knotweed from commercial and residential premises. We are well-known for our professional approach and excellent customer care.

If you suspect you might have any invasive plants growing on your land, in your garden or near your home, we recommend booking a survey and resolving the problem as soon as possible.

Book a knotweed survey here.

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