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Can Japanese Knotweed Grow Through Concrete?

Here at Japanese Knotweed Solutions Limited (JKSL), we’re experienced in seeing the mayhem that this particularly invasive weed has been causing to land and property across Britain. With our wealth of experience in identifying, controlling and eradicating Japanese knotweed, we’re well placed to answer many of the key questions on the weed’s characteristics and impacts. We’ll begin with a little bit of a brief history on the weed in case you’re new to the topic.

History of Japanese knotweed

The import of Japanese knotweed to the UK, from (as its name would suggest) Japan, was carried out by the Victorians in the mid-19th century. The plant was once a decorative favourite for many gardeners, embraced in the properties of the wealthy because of its exotic bamboo-like appearance and its strong growth. However, as with many decorative items, fashions change, and it was soon discarded into the wild, but for a plant that developed a robust nature on the slopes of Japanese volcanoes, the British countryside posed little challenge and it had soon taken root across the nation.

Since then, it has become a nightmare for many land and/or property owners, causing havoc to gardens, commercial or residential buildings, and roads. Japanese knotweed squeezes out surrounding wildlife, as well as exploiting weaknesses in brickwork and piping, which brings us onto the topic of this page.

The Concrete Question

Now...on to the famous claim…can Japanese knotweed actually break its way through concrete? While the weed’s growth is close to relentless, it can’t actually force its way through intact concrete. However, just as with brickwork and piping, should there be existing cracks in the concrete, Japanese knotweed is very adept at making its way through gaps and worsening any current cracks. Like any other weed or plant, it needs water and light to continue to grow and flourish, so it’ll be sure to fight its way through weak spots in walls, roads, tarmacs, joints and even concrete. If a trickle of water can pass through a crack, then so can Japanese knotweed, so if you notice a knotweed issue, it’ll need a rapid response.

How do I deal with it?

The process of eradicating it from your territory begins with the correct identification of the weed. Here at JKSL, we understand that for the menace of the weed to be completely tackled, expertise must be applied. We have trained professionals able to identify Japanese knotweed’s many forms and characteristics throughout the year. It is not possible to rely on spotting its oval-shaped leaves and bamboo-stem when identifying, but this is where our expertise comes in handy; send us images of our your potential Japanese knotweed issue and we’ll be able to make proper identification.

Should we identify Japanese knotweed, our team can visit your home or commercial site to see how far the plant has grown and determine the best method to use for eradication. Once we’ve completed our site survey, we will advise on the most suitable treatment method, whether it be chemical treatment excavation and removal or burial on site.

All of our removal methods are fully industry-compliant and properly licensed. It’s vital that removal is carried out by professionals with the right tools and equipment, as amateur removal can often lead to greater regrowth and spread in the future. For more information on how JKSL can provide you with the ideal solutions to your Japanese knotweed issues, please get in touch with us today.

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