The luminous white flowers that often fade to pink are perfect for brightening up a shady, moist bed or woodland garden in mid to late spring. The large, broad-petalled flowers are a knockout. This Trillium has been given the Award of Garden Merit by the Royal Horticultural Society for its top performance in the garden. Flowers April-May. Height 30-38cm. Root size 1. Hardy, clump-forming perennials with unique 3-petalled flowers set atop unique 3-prolonged leaves.