Geranium phaeum (Dusky cranesbill):
Purple flowers with swept-back petals held high above soft green foliage. Early to flower, reliable and easy. To 60cm. Hardy.
Geum 'Nonna' (PBR) (Avens 'Nonna'):
New variety with warm apricot semi-double flowers edged in orange, above hairy green foliage. Long flowering. Hardy. Up to 40cm.
Jeffersonia diphylla (Twinleaf):
White single cup-shaped flowers above clumps of unusual bi-lobed leaves on long stalks. Prefers moist, humus-rich soil in shade.
Lamium orvala 'Album':
A woodland perennial with large, white, lipped flowers in late spring. Hardy. Up to 50cm.