How is Japanese knotweed Treated or Controlled or Removed?
Japanese knotweed is controlled by various measures, this depends on the severity of the outbreak, where it is and environmental considerations such as nearby watercourses, trees etc.
The principle means of control and eradication is by using herbicides as part of a treatment or control plan, this can last up to 5 years. If the land is required for redevelopment other treatment is available to reduce the time scale but this is usually a much more costly alternative.
Removal of Japanese knotweed requires digging out the whole plant and root system. This requires removing by excavation and disposal an areaÂ 3 metres deep and 5 metres wide to ensure all the Japanese knotweed is removed. As you can imagine when Japanese knotweed is adjoining building this is a large expensive undertaking.
What Are My Legal Responsibilities?
As a landowner you are obliged by law to control Japanese knotweed on your land to prevent the spread to adjoining land. However if it is affecting a neighbouring property and is causing problems then you have an obligation to deal with it.It is an offence under the Countryside & Wildlife Act 1981 to plant, or to encourage Japanese knotweed to grow in the wild.
Japanese knotweed and Mortgage issues
The presence of Japanese knotweed within 7 meters of a property boundary can render the property un-mortgageable. As you can imagine this can be a severe and costly issue for home owners as eradication is either very costly or long term treatments that are required can result in the failure to move when desired.
Is There Any Solutions to Japanese knotweed that enables a Mortgage to be obtained?
As members of the Property Care Association Invasive weed Section, Professional Remedial Services offer a program of treatment to eradicate Japanese knotweed, this consists of a 3 year treatment program and two years monitoring.
Once the program of treatment is completeÂ PRSÂ issueÂ aÂ 10 year guarantee against re-growth in the treated area. (Subject to our terms and conditions).
Professional Remedial Services are members of the invasive weed section of the Property Care Association and as such offer the Guarantee Protection Insurance (GPI) for the treatment of Japanese knotweed control and the guarantee against anyÂ structural damage if the infestation is adjoiningÂ a building or structure.
As you can imagine a long term treatment program whilst you wish to move is not much use! however most building societies accept that once a contract for eradicationÂ is in place and the cost secured, they will issue a mortgage to enable the home owner to move and secure the new owners against any loss on the property value or damageÂ resulting from Japanese knotweed infestations.