In a letter to the Ellon Times Alec Paterson, Secretary, of the River Ythan Trust said: “I noted with interest, your article in the September 18th edition.
“I am aware from our surveys of the Ythan and tributaries in 2011/12, that an infestation of the invasive non native plant Japanese Knotweed exists there.
“Presence of this plant is often associated with bank erosion. Normally construction work cannot be commenced until it has been removed complete with root rhizomes.
“It can also be treated using herbicides; however repeated treatments are required before the plant can be regarded as eliminated. This plant, if found on your property, may make your house almost unsalable – mortgages are not normally available in such a situation. Find out more: secure.fera.defra.gov.uk/nonnativespecies/downloadDocument.cfm?id=369.”