Your Property & Japanese Knotweed

Your Property & Japanese Knotweed

Japanese Knotweed can cause a multitude of issues if left un-treated. It can penetrate foundations and brickwork, underground services and affect drainage. You can see more about the problems caused by Japanese knotweed on our previous blog post here.

Identifying Japanese Knotweed

It has purple speckled stems and regular nodes much like bamboo. The stems to the leaves are zig-zag. The leaves are shaped like a shield and lush green. The rhizome or rootstalks will contain little white shoots.

It can be hard to tell if you are dealing with Japanese knotweed especially as there are closely related relatives. It is commonly confused with Giant knotweed and it’s hybrid. Confused? We don’t blame you. Here is a link to the Gov.UK website article on Japanese knotweed. There is a very informative guide that can be downloaded “How to identify Japanese knotweed“.

Spraying Japanese Knotweed With Chemicals

In an ideal world we wouldn’t have to use any harmful chemicals such as Glyphosate which is found in general weedkillers such as (Roundup).

This invasive species can be sprayed with chemicals as an effective treatment but great care should be taken. A specialist is recommended to carry out the knotweed control process. It can take over 3 years to get the underground rhizomes under control. Usually at the end the specialist will present you with a certificate showing that the knotweed poses no risks to the property. The chemicals required will be determined by the specialist.

The Northern Ireland Environment Agency and National Parks & Wildlife Service have come together to compile an Invasive Species advice portal. You can use this excellent tool to get information on invasive species like knotweed here.

Property Surveyors NI

We carry out property surveys across Northern Ireland. We carry out a full property survey and don’t just survey certain issues. We look at everything and give you a good overview of the whole structure, reporting all issues found.

Contact Us or call Philip today on 07702 332 333. Our professional surveyors are always happy to be of service.