'Wild Swan' is a hybrid which probably has a very long, intermittent flowering season. It has white flowers with a blue reverse, and flourishes in dappled shade. Winner of the RHS Chelsea Flower Show Plant of the Year Award in 2011.
Soil: Moist but well drained
Sunlight: Full sun, partial shade
Height and Spread: 0.1-0.5m, 0.1-0.5m