It can be known to grow as much as 10cm in a single day. The herbicide used is most likely to be Glyphosate and the application can only be undertaken by an appropriately certificated operative. In order to ensure that the advice and management you contract is reliable and recognised by mortgage lenders and other relevant agencies, you should contact a company which is a member of the Invasive Weed Control Group of the Property Care Association. PE29 6FY, Email: pca@property-care.org If you would like to, you can learn more about the cookies we use. “PCA®” and the PCA logo are registered trademarks of the Property Care Association. means you agree to our use of cookies. Japanese knotweed is a member of the buckwheat family. When disturbed, the plant can grow very quickly and its roots spread extensively. You must prevent Japanese knotweed on … This can add huge costs to development and regeneration schemes. Call the PCA: 01480 400000 Email: pca@property-care.org, The Property Care Association If you are prepared to accept the Japanese knotweed management plan and associated costs, you should be presented with a contract to agree the works with the Japanese knotweed specialist. Consulting and contracting an expert Recreation – Knotweed is a nuisance to anglers, boaters and other river users as it impedes access. As with other plants, the pressure exerted by the expanding rhizome (or roots) can split structures along weak points and push up through car parks and drives where the asphalt has been poorly laid. Such control methods, relying mainly on chemicals, are widely considered to be unsustainable and so a longer-term and cost effective solution to the problem is required. A notice could require an individual or organisation to make reasonable efforts to make good the problems arising as a result of Japanese knotweed within a specified period of time and/or a requirement to take reasonable steps to prevent future occurrence of the problem. This problem was eased when the Royal Institution of Chartered Surveyors introduced its assessment framework (2012) which ranked the risk of the plant into four categories. According to the UK government, the cost of controlling existing Japanese Knotweed had risen to £1.25 billion in 2014. A collaborative approach is by far the best way to deal with the matter and any costs to be shared. Concrete – It may be strong but not even Japanese Knotweed can grow through concrete. Giant knotweed (Fallopia sachalinensis / Reynoutria sachalinensis) is found widespread throughout the UK but is not as common as Japanese knotweed. Glyphosate has a remarkably low toxicity to humans and other animals and it becomes inactivated, effectively harmless, on contact with soil. Japanese knotweed rhizomes in their search for moisture can interfere with drainage pipes and other structures, blocking and sometimes lifting the pipework and clogging sumps. 11 Ramsay Court Over many years, Japanese knotweed has acquired a reputation as one of the most invasive plants, and has been blamed for causing damage to properties. Identify Japanese knotweed. In order to ensure that Japanese knotweed on your land is effectively and completely treated, you need to obtain professional advice. Japanese knotweed could be more effective than antibiotics at tackling the growing problem of Lyme disease. I have been fighting the Japanese Knotweed in my back yard for years, Last year I did extensive research on this invasive weed. 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