Achillea ptarmica 'The Pearl' (Yarrow 'The Pearl): Tight buttons of white flowers, ferny grey/green foliage. Prefers full sun and light well-drained soil. Hardy. Up to 60cm.

Ageratina altissima 'Chocolate' (Snakeroot 'Chocolate'): An attractive perennial with leaves tinged with chocolate brown and delicate white flowers, much loved by bees and butterflies. Hardy. Up to 1m. [Collect Only]

Ajuga reptans 'Alba' (Bugle, white flowered): Superb ground cover plant with bright green leaves and white flower spikes in summer. Very attractive to bees

Anemonella thalictroides (Mayflower): Gorgeous little white flowers over dainty foliage. Hardy. To 20cm.

Aruncus 'Horatio' (Goat's beard 'Horatio'): A very elegant form of the familiar goat's beard, with fine sprays of creamy flowers in summer. To 1.2m. Hardy [Collect Only]

Aster cordifolius 'Silver Spray' (Syn. Symphyotrichum cordifolium 'Silver Spray'): Large sprays of small pale lilac flowers in autumn. Mildew resistant and doesn't need staking. Hardy. Up to 80cm. [Collect Only]

Aster divaricatus (White wood aster. Syn. Eurybia divaricata): Upright dark stems with a mass of small white starry flowers. Large, oval dark green mildew resistant leaves. Good for shade. Hardy. Up to 60cm.

Astilbe 'Cappuccino' (PBR): Large, upright panicles of creamy white flowers in summer over contrasting dark bronze ferny foliage. Hardy. Up to 60cm. [Collect Only]

Astilbe 'Ellie': Large, upright panicles of white flowers in mid-summer over dark green ferny foliage. Hardy. Up to 80cm. [Collect Only]

Astrantia major (Greater masterwort): White/green pincushion flowers. Good for drying, I'm told! Great in sun/shade in soil that isn't too dry. Hardy. Up to 60cm.

Bergenia 'Silberlicht' (Elephant's ears 'Silberlicht'): Strong spikes of white flowers on pink stems in winter/early spring. Large rounded evergreen leaves. Excellent ground cover plant

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.

Catananche caerulea 'Alba' (Cupid's Dart (White)): Papery white flowers above slender grey-green foliage. Flower heads retains attractive form through winter. To 60cm. Hardy

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

Geranium macrorrhizum 'White Ness' (Cranesbill 'White Ness'): Pure white flowers over aromatic, bright green, evergreen foliage. Good groundcover in shade. Hardy. Up to 50cm.

Geranium pratense f. albiflorum 'Laura' (PBR) (Meadow cranesbill 'Laura'): An attractive double form of the familiar meadow cranesbill with lovely pure white flowers. Strong growing. Hardy. Up to 70cm.

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

Geranium sylvaticum 'Album' (Wood cranesbill): Upright stems of white saucer-shaped flowers above deeply divided leaves. Prefers moist shadier spots. Hardy. Up to 70cm. [Collect Only]

Kalimeris incisa 'Alba' (Japanese Aster 'Alba'): Daisy white flowers forming upright sprays above bright green foliage. Loves a sunny spot. Hardy. Up to 60cm.

Leucanthemum x superbum 'Aglaia' (Shasta Daisy 'Aglaia'): Double, frilly white flowers in late summer and autumn. Glossy green foliage. Fully hardy, dislikes soggy soils. Height to 50cm [Collect Only]

Leucanthemum x superbum 'Becky' (Shasta daisy 'Becky'): Shasta daisy with clean white flowers with golden centre. Long flowering season. Ideal for sunny border. Hardy. Up to 1m.

Leucanthemum x superbum 'Wirral Supreme': Tall form of Shasta daisy with white flowers and multiple shorter petals around the golden centre, making an attractive frilly effect. Hardy. Up to 1.5m. [Collect Only]

Ligusticum scoticum (Scottish Lovage): Native plant with white umbels above mound of green leaves. Celery like leaves. Up to 60cm. Hardy

Lobelia siphilitica 'Alba' (Cardinal flower 'Alba'): Tall spikes of white flowers and bright green lance-shaped leaves. Needs a soil which doesn't dry out. Hardy. Up to 90cm.

Maianthemum racemosum (False solomon's seal. Syn. Smilacena racemosa): Arching sprays of white flowers with bold, oval green foliage. A fine woodland plant, especially if soil is not too dry. To 90cm. Hardy.

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.

Pachyphragma macrophyllum: Great for ground cover in shady areas,glossy round, green leaves and clusters of white flowers in the spring. Hardy. Up to 45cm.

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

Polemonium caeruleum f. albiflorum (Jacob's Ladder - white form): Clusters of pure white flowers over foliage with leaflets arranged in pairs.Good in part shade. To 50cm. Hardy.

Polygonatum x hybridum (Solomon's seal (Syn. Polygonatum multiflorum)): Arching sprays of paired white bells, tinged with green in spring. To 70cm. Hardy. [Collect Only]

Potentilla montana (Mountain cinquefoil): Low-growing form with silvery grey green leaves and small white flowers with a yellow centre. Good ground cover. Hardy. Up to 30cm [Collect Only]

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

Salvia x sylvestris 'Schneehugel' (Wood Sage 'Schneehugel'): White flower spikes above grey-green leaves. Flower over a long season from mid-summer. Bees love it! Hardy. Up to 50cm. [Collect Only]

Sanguisorba tenuifolia var. alba: Soft arching white bottle-brush flowers over fine, frondy foliage. To 1.5m Hardy. [Collect Only]

Sanguisorba tenuifolia var. alba 'Korean Snow': A very tall form with white fluffy tassel-like flowers above attractive ferny green foliage. Prefers full sun, will tolerate some shade. Hardy. Up to 1.8m. [Collect Only]

Selinum wallichianum (Wallich milk parsley): Stately umbellifer with large white heads atop large lacy leaves. Hardy. To 1.5m

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.

Stokesia laevis 'Alba' (Stoke's aster): Large fluffy white flowers in mid summer above slender green leaves. Likes a well drained but fertile soil in full sun. Up to 60cm. Hardy

Thalictrum aquilegiifolium (French meadow rue): Fluffy heads of pale pink or white flowers in early summer

Thalictrum Nimbus White = 'Tntnw' (PBR) (Rue 'Nimbus White'): A new variety with dense clouds of fluffy white flowers on dark stems above grey-green ferny foliage like an aquilegia. Hardy. Up to 70cm.

Tricyrtis 'White Towers' (Toadlily 'White Towers'): Upright stems and star-shaped white flowers above fresh green foliage. Shade-lover. Prefers a moist soil. Hardy. Up to 60cm.

Veronica longifolia 'Charlotte' (PBR) (Long-leaved speedwell 'Charlotte'): Spikes of white flowers, slender variegated leaves. Good in sun or part shade. Hardy. Height to 40cm.

Veronica longifolia 'Melanie White' (Long-leaved speedwell 'Melanie White'): Spikes of pure, clean white flowers, and long slender foliage. Good in sun or part shade. Good as a cut-flower. Hardy. Up to 60cm.

Veronicastrum virginicum 'Album' (Culver's Root 'Album'): Slender spikes of white flowers above rising whorls of slender green leaves. To 1.5m. Hardy [Collect Only]