Gardeners can pick up top tips from across the Channel by heading to France for the 'Rendez-vouz aux Jardins' festival, 31 May to 2 June. The nationwide event sees many fine French gardens open their gates to visitors for the first time. There are 33 parks and gardens in the Nord / Pas de Calais taking part, ranging from small private creations to grand medieval estates. All are within a short drive of Calais