Dianthus carthusianorum (German pink):
Tall stems ending in clusters of bright pink flowers above mounds of green, grassy foliage. Prefers sunshine. Hardy. Up to 50cm.
Dierama pulcherrimum (Angel's Fishing Rod):
Tall, wiry, arching stems with soft pink nodding bells. Likes well-drained soil that doesn't dry out. Lovely near water or over paths. To 1.5m.
Gaura lindheimeri 'The Bride':
Beautiful airy stems of white flowers in mid to late summer. Best in full sun, in well drained soil and a sheltered spot. Stems up to 1m.
Heuchera 'Black Pearl':
Dark purple almost black leaves with ruffled edges and white flowers. Does fine in sun or dappled shade. Hardy.
Hosta 'Devon Green':
Elegant hosta with tapering, dark green, fine-veined leaves. Lilac flowers in summer
Thalictrum delavayi (Chinese meadow rue):
Dainty lilac-mauve flowers 2cm in width, with prominent creamy yellow stamens above fern-like bright green leaves. Hardy. Up to 1.5m.