Anemone sylvestris (Snowdrop anemone): Large pure white flowers over a mound of green ferny foliage. Hardy. Up to 30cm.

Epimedium grandiflorum 'White Queen' (Barrenwort 'White Queen'): Among the largest and showiest of white flowered Epimediums. To 30cm. Hardy.

Lamium maculatum 'White Nancy' (Spotted dead nettle 'White Nancy'): A low ground cover plant with silvery heart-shaped leaves and short stems of white flowers. Brightens up a shady area. Hardy. Up to 20cm.

Mukdenia rossii: Short plump spikes of white flowers in spring, but mainly grown for its foliage which turns brilliant red in autumn. Up to 30cm.

Podophyllum peltatum (May apple): Large umbrella like leaves, with white waxy flowers beneath. A fine woodland plant. Height to 30cm. Hardy.

Pulmonaria 'Sissinghurst White' (Lungwort 'Sissinghurst White'): Clusters of pure white flowers in spring over white spotted green leaves. To 20cm. Hardy.

Trillium grandiflorum (American wake-robin): Pure white, three petalled flowers over three-leaved foliage.