Previously sellers of properties that had knotweed present on their land or sometimes on their neighbours land were trapped in their property unable to sell it.

Its presence can wipe upto 15 percent off the value of a property.

New advice coming into force this March means surveyors for mortgage lenders don’t have to flag the presence of knotweed unless its causing visible damage to a property.

Last year the Royal Institute of Chartered Surveyors (RICS) claimed the plants reputation had been built upon “myths and misconceptions” and hoped that things looked a lot brighter for homeowners where they are hosting this unwelcome “visitor”.