RHS identify four separate viruses which can obliterate infected grapes . Experts say the only way to deal with viruses is to pull up plants . Disease spotted on display at RHS gardens in Wisley , Surrey . Also detected at the National vine nursery in Brogdale , Kent . Can result in reduced yields , reduced fruit ripening and overly - acidic grapes .
RHS identify four separate viruses which can obliterate grape crops . Experts say the only way to deal with problem is to pull up plants . Disease spotted on vines at RHS gardens in Wisley , Surrey . Also found at the National Fruit Collection in Brogdale , Kent . Can result in reduced yields , delayed fruit ripening and overly-acidic grapes .