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

Armeria maritima 'Armada White' (Thrift 'Armada White'): An old fashioned cottage garden favourite. Makes a neat clump of evergreen foliage with white pom-pom flowers suffused with pink. Hardy. Height to 20cm.

Calamintha nepeta 'White Cloud': Spikes of small white flowers above mounds of minty scented green leaves. Loved by bees and butterflies. Hardy. Up to 30cm.

Campanula glomerata 'Alba' (White clustered bellflower): Tight clusters of white flowers on short stems above neat, mat-forming foliage. Height about 30cm. Hardy.

Centaurea montana 'Alba' (Perennial cornflower - white): Large white cornflower-like flowers over grey-green foliage. To 30cm. Hardy.

Centaurea montana 'Purple Heart' (Perennial cornflower 'Purple Heart'): Large white cornflower-like flowers with violet central markings. To 30cm. Hardy

Convallaria majalis (Lily of the Valley): Scented white bells in spring, Great for spreading around in shade.

Convallaria majalis 'Flore Pleno' (Lily of the Valley - double flowered): Scented double white bells in spring, Great for spreading around in shade. To 20cm.

Geranium maculatum 'Album' (white spotted cranesbill): Clean white flowers over neat foliage. Great for establishing under trees and in shady areas.

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.

Geranium sanguineum 'Album' (Bloody cranesbill 'Album'): Pure white flowers over a mat of dark green leaves. Height to 20cm. Fully hardy.

Helleborus niger (Christmas Rose): Pure white flowers in midwinter, evergreen foliage.

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.

Maianthemum bifolium (False lily of the valley): Shade-loving spreading perennial. Pairs of glossy oval leaves. Like a mini-hosta. Spikes of white star-shaped flowers. Hardy. Up to 10cm.

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.

Phlox divaricata 'White Perfume': Deliciously scented and delicate pure white flowers which are long-lasting. Prefers some partial shade. Hardy. Up to 30cm.

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

Primula denticulata var. alba (Drumstick primula - white): Pure white balls of flowers on sturdy stems. To 25cm. Hardy

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

Sisyrinchium idahoense 'Album': White star-like flowers with a yellow centre, grass-like strappy foliage. Prefers a sunny spot with good drainage. Hardy. Up to 15cm.