Geranium himalayense 'Derrick Cook' (Cranesbill 'Derrick Cook'): Large white flowers with delicate purple veining above a clump of bright green leaves. Foliage turns red in autumn. To 35cm. Hardy. [Collect Only]

Geranium nodosum 'Silverwood' (Knotted cranesbill 'Silverwood'): Pure white form of the more common pink species. Soft, shiny green leaves. Ideal for dappled shade. Hardy. To 30cm.

Lychnis flos-cuculi 'White Robin' (White Ragged Robin): A pretty white form of our native Ragged Robin. Starry white flowers in early summer. Thrives in damp, part-shaded spots.