Power hour: Japanese knotweed

Japanese knotweed causes panic in property buyers and sellers alike. Is it really the terrifying nightmare that’s reported in the media, or has it been blown out of proportion?

Japenese Knotweed green stem

Japanese Knotweed can extend 2–3 metres high and up to two metres deep and will exploit any weakness in the fabric of a building in its quest for water and light.  

The dangers of Japanese Knotweed

Japanese Knotweed can jeopardise the sale of a property. This guide covers what to look out for and what your options are if you believe it exists on your property.


Kay Pemberton

Japanese Knotweed Ltd

Kay has worked for Japanese Knotweed Ltd (JKL) since 2016, managing the company’s website, online presence, exhibitions and advertising. She writes editorial on the subject of Japanese knotweed for industry publications along with case studies that detail work completed by JKL.

In 2020 JKL completed a £1.3m knotweed excavation project and completed a further 190 other excavation contracts in the same year. They have over 5000 herbicide treatment contracts running in the UK, catering for commercial and residential customers.

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