Japanese Knotweed

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What is Japanese knotweed?

Despite being a rather good-looking plant, Japanese knotweed (Fallopia japonica) is not one you would want on your property. This brute of a plant grows to massive proportions and spreads rapidly. By early summer the bamboo-like stems can shoot to over 2.1m (7ft) high!

Japanese knotweed’s tenacious growth can see it push through the smallest nooks and crannies in concrete and masonry, and this can have a devastating effect on the structural integrity of buildings. This is why a great number of banks and building societies will refuse to lend on affected properties.

Japanese knotweed treatment requires a dedicated, professional programme as it is very hard to remove once it gets its roots in.

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What does Japanese knotweed look like?

Japanese knotweed takes different forms throughout the year. Take a look at these pictures to help identify it.

(click on images above for hi-res version)

The Wise approach

At Wise Property Care, we have our very own specialist division Wise Knotweed Solutions to combat invasive weeds.

Wise Knotweed Solutions take a step-by-step approach to provide you with clear and practical advice towards Japanese knotweed to ensure that all our customers have a positive experience from start to finish. If you have Japanese knotweed, we will find the right knotweed solution for you.

More about Wise knotweed Solutions 

About our Knotweed surveys

At Wise Property Care and our specialist Knotweed division, we take the responsibility of a survey VERY seriously. Click on the video and button to find out more.

More about our Knotweed surveys

Our Knotweed credentials

As members of the Property Care Association and many other trade bodies, you can rest assured that your Knotweed issue will be correctly dealt with to industry standards and beyond.

About our Experience & Qualifications


Before going ahead with any form of Japanese knotweed treatment, it is important to ensure and correctly identify where you do have a Japanese knotweed issue by a Japanese knotweed expert.

If you suspect you have Japanese knotweed, visit our specialist Wise Knotweed Solutions website at www.wiseknotweed.com.

Alternatively, contact our team today on 0800 65 22 678 for help and advice or use our online contact form.

Visit our specialist Wise Knotweed Solutions website


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  • Transparent & itemised costs

  • Instant Onsite Diagnosis & Estimates

  • Rated and trusted

  • PCA Award winners

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