Hosta 'Devon Green':
Elegant hosta with tapering, dark green, fine-veined leaves. Lilac flowers in summer
Salvia 'Amistad' PBR (Sage 'Amistad'):
Tender perennial deep purple tubular flowers with a dark black calyx. Flowering from early summer to first frosts. Deadhead to prolong flowering. Up to 1.2m.
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.