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19 Dec 2014 < Back

New guide gives clarity on Japanese knotweed concerns

A new guide has been launched by the Property Care Association (PCA) to give a comprehensive picture on the main issues surrounding the invasive plant Japanese knotweed.

The move follows the recent announcement from the Home Office that it is has reformed anti social powers to introduce Community Protection Notices for Japanese knotweed and other non-native invasive plants.

Written by Professor Max Wade – chairman of the PCA’s Invasive Weed Control Group – the guide explains some of the major factors surrounding the Government’s introduction of Community Protection Notices, which could see fines of up to £20,000 imposed for companies failing to tackle the problem.

Individuals would also be forced to comply too, or face a fine of up to £2,500.

JK cover web

Along with details on the new control measures, the eight-page PCA guide, entitled ‘A guide to the problems caused by Japanese knotweed and how to deal with them’ also provides some useful do’s and don’ts, details on preventative measures to stop the plant taking hold in the first place and guidance on how to recognise it.

The guide is available to view below

Steve Hodgson, chief executive of the PCA, said: “The guide offers a timely overview to Japanese knotweed and gives information that will help inform individuals and companies on the action they need to take should they face problems with non-native invasive weeds. The guidance is particularly useful in light of the new development from the Home Office in dealing with invasive weeds, which will increase the demand to eradicate plants such as Japanese knotweed and giant hogweed.”

In 2012, The Property Care Association – which has been in formation for more than 80 years – worked with the Royal Institution of Chartered Surveyors (RICS) – supported by the Council of Mortgage Lenders and The Building Societies Association – together with Japanese knotweed control companies that currently operate within the UK, to set up the Invasive Weed Control Group, to signpost consumers to professional treatment companies.

Mr Hodgson added: “Japanese knotweed is just a plant and we are taking all steps necessary to ‘normalise’ it, so it is viewed generally as any other type of property problem, in that it can be identified and treated, with minimal impact.

“The new guide is part of that process and we hope it helps clarify the main points surrounding the plant to individuals and companies alike.”

Japanese knotweed – A guide to the problems caused by Japanese knotweed and how to deal with them



Keith Thomas

Hi James, posted in similar vein on LinkedIn this morning. However, it must be said that much of the ‘race to the bottom’ is being fuelled by members from the manufacturing/ supplier contingent

Paul Green

Well said James The race to the bottom is an age old / not new phenomenon, (albeit maybe exasperated more recently ?), and with ref to the comments about utilising experts from inception stages I cannot concur more with you, and in my humble opinion, more emphasis needs to be placed on our members standing their ground where shoddy substrates / concrete needs to be a major consideration before even contemplating to propose or install any BS;8102 compliant waterproofing systems, or any combinations of them, and it would perhaps better serve both our members, and their clients, if our cohorts had a greater understanding of say, watertight concrete too, and if it helps, I for one would be happy to offer a member friendly CPD type presentation on type-B waterproofing to broaden the knowledge base of some of our younger members too ?

Andrew Young

I’m trying to find a company who is associated to your organisation that can remove our Icynene spray foam from our pitched roof. I have been unsuccessful at this time, could you advise me please

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