Agastache rugosa f.albiflora 'Liquorice White' (Korean mint 'Liquorice White'): Tall, aromatic perennial with spires of tiny white flowers. Aromatic foliage. To 1.5m. Fully hardy in light soils. May self-seed.

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.

Aruncus dioicus (Goat's beard): Stately plant for larger borders or feature plant. Deeply divided foliage, frothy panicles of creamy white flowers in summer. Up to 2m. [Collect Only]

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.

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. [Collect Only]

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 persicifolia 'Chettle Charm' (Peach-leaved bellflower 'Chettle Charm'): Large white cups with tinged with violet blue at the petal edges. Very pretty summer flowering perennial. To 75cm.

Campanula persicifolia var. alba (Peach-leaved bellflower white flowered): Pure white large rounded cups on upright stems. Long flowering. Height to 70cm. Hardy.

Cenolophium denudatum (Seseli libanotis, Baltic parsley): Flat umbels of pretty white flowers in summer. Fine, filigree foliage. Great in borders, sun or part shade. Hardy. To 90cm [Collect Only]

Centranthus ruber 'Albus' (White Valerian): White panicles of white flowers in mid-late summer. Very easy, self-seeds. Perennial and hardy. To 60cm.

Dierama 'Snow Bells' (white angel's fishing rod): Tall, wiry, arching stems with white nodding bells. Grassy foliage. Likes well-drained soil that doesn't dry out. Hardy. Up to 1.5m.

Epilobium angustifolium 'Album' (White Rosebay Willowherb. Syn. Chamaerion angustifolium 'Album'): Slender spires of white flowers in late summer. Spreads rapidly through underground runners but doesn't self-seed.To 1.8m. Hardy. [Collect Only]

Gaura lindheimeri 'The Bride': Beautiful airy stems of white flowers in mid to late summer. Best in full sun, in well drained soil and a sheltered spot. Stems up to 1m. [Collect Only]

Geranium pratense 'Striatum' (SPLISH SPLASH) (Meadow cranesbill 'Splish Splash'): Classic white cranesbill type flower mottled with purple streaks. To 60cm. Hardy.

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. [Collect Only]

Geranium sanguineum 'Album' (Bloody cranesbill 'Album'): Pure white flowers over a mat of dark green leaves. Perfect for border edging. Long Flowering.To 20cm. Fully hardy.

Gillenia trifoliata (Bowman's root): Lovely plant with starry white flowers held high over elegant foliage. Great in light shade. Hardy. To 90cm.

Lychnis coronaria 'Alba' (Rose campion (white)): Pure white flowers on tall silver stems above rosettes of silver leaves

Penstemon 'White Bedder': Pure white tubular flowers over semi-evergreen foliage. Frost-hardy perennial. Up to 60cm.

Phlox paniculata 'David' (Phlox 'David'): An excellent phlox with clean white flowers and a delightful scent. To 1.2m. Hardy.

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.

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.

Sanguisorba 'Burr Blanc': A lovely white Sanguisorba with fluffy flowers above ferny foliage. Very floriferous. Prefers soil that is not too dry. Hardy. Up to 1.2m

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

Tradescantia (Andersoniana Group) 'Innocence' (Spider lily 'Innocence'): Three-petalled pure white flowers with purple tinged anthers. Strappy bright green foliage.

Tradescantia (Andersoniana Group) 'Osprey' (Spider lily 'Osprey'): Three-petalled white flowers with a fluffy blue centre above strappy foliage. Great as a ground clump former in sun or part shade.

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.

Vinca minor f. alba 'Gertrude Jekyll' (Small white periwinkle 'Gertrude Jekyll'): A compact mat-forming evergreen perennial with trailing stems of dark green leaves. White flowers from mid spring to autumn.