Acanthus mollis (Latifolius Group) 'Rue Ledan (Bear's Breeches 'Rue Ledan'): Architectural spikes of hooded pure white spiny flowers over large, soft, bright green leaves. Best in sun or part shade. Height to 1.2m [Collect Only]

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. [Collect Only]

Anemonopsis macrophylla (False anemone): A really elegant plant with glossy dark green leaves and dainty lilac flowers held on wiry stems. Hardy. Up to 75cm.

Anemonopsis macrophylla 'Alba' (False anemone 'Alba'): A really elegant plant with glossy dark green leaves and dainty white flowers held on wiry stems. Hardy. Up to 75cm.

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.

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]

Aruncus dioicus (Goat's beard): Stately plant for larger borders or feature plant. Deeply divided foliage, frothy panicles of creamy white flowers in summer. Hardy. 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. [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.

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.

Campanula lactiflora 'Alba' (Milky bellflower 'Alba'): Tall stems with clusters of pure white flowers in mid-summer. Ideal for filling out borders and adding height. Hardy. Up to 1.2m

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

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]

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

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

Dierama - white flowered (Angel's Fishing Rod): Arching white flowers with pink throat on wire-like stems. Grassy foliage. Looks lovely near water, in pots or over paths

Dierama pulcherrimum 'Alba' (Angel's Fishing Rod): Tall, wiry, arching stems with white nodding bells. Lovely near water or over paths. To 1.5m. [Collect Only]

Gaura lindheimeri 'Elurra': A more compact form with airy wands of white flowers. Best in full sun, in well drained soil and a sheltered spot. Up to 50cm.

Gaura lindheimeri 'The Bride': Beautiful airy stems of white flowers in mid to late summer [Collect Only]

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

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.

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

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.

Monarda 'Schneewittchen' (Bergamot 'Schneewittchen'): Whorls of pure white flowers held high above aromatic foliage. Does well in sun or part shade and in moist soil. Attractive to bees. To 90cm. Hardy. [Collect Only]

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

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]

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 '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

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 delavayi 'Album' (Chinese meadow rue 'Album'): Dainty cup-shaped white flowers held high above fern-like greyish green leaves. To 1.2m. Hardy [Collect Only]

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.

Verbena hastata 'Alba' (American blue vervain 'Alba'): Tall, branched stems like a candelabra with spikes of small white flowers loved by bees. Needs a sheltered spot & full sun. Up to 1.2m. [Collect Only]

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. [Collect Only]

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]