Caulophyllum thalictroides (Blue cahosh):
Shade-loving with yellow-brown flowers in spring, followed by blue berry-like seeds in autumn. Attractive, divided blue-grey foliage. Hardy. Up to 1m.
Crocosmia x crocosmiiflora 'Citronella':
Bright sunny yellow funnel shaped flowers in late summer with sword shaped green foliage. A compact variety. Hardy. Up to 60cm.
Digitalis grandiflora (Yellow foxglove):
Perennial foxglove with yellow bell-shaped flowers above clumps of evergreen lance-shaped leaves. Bee-friendly. Hardy. Up to 1m. AGM
Hemerocallis 'Corky' (Daylily 'Corky'):
Slender yellow trumpets with mahogany stripe on back. Flowers held high on black stems above fine foliage. Superb plant. To 60cm. Hardy