KNOTTY PROBLEM

Now if there is something strange in your neighbourhood - and it looks like Japanese knotweed - who are you gonna call to sort it out? Radio Foyle's reporter Dan Stanton to the Fort George development - one local site that's been plagued by the plant, which can grow through concrete. There he met Michael Conway from the Roe Valley Country Park who has had to tackle the problem there as well.

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Insect to fight knotweed released