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.
Disporum longistylum 'Green Giant':
Elegant woodlander with white-green, pendant flowers and glossy dark evergreen leaves. Bamboo-like form, prefers a shady spot. Hardy. Up to 1.2m.
Polygonatum verticillatum 'Rubrum':
Tall upright dark-red stems with whorls of narrow leaves and bell shaped flowers flushed red. Good in shade. Hardy. Up to 1m.