Like its namesake, Clematis 'Princess Diana' or 'The Princess of Wales' is strong, dignified and beautiful. The hardy climber is easy to maintain as it is pruned back almost to ground level annually. However, this variety of Old Man's Beard is best known for its tulip shaped flowers which appear throughout the summer. Their bright pink petals are complemented by honey coloured stamens, providing a colourful addition to cottage gardens, patio containers, trellises and obelisks. Height: 4m (13'1); Spread: 1m (3'3); Pruning group: 3.