Acanthus mollis (Bear's Breeches): Architectural spires of purple/white flowers over large, dark green deeply divided leaves. Best in sun or light shade. Height to 1.2m.

Angelica gigas: Magnificent plant with huge domes of purple flowers in summer, and attractive seed heads. Biennial/short-lived perennial. Up to 2m.

Anthriscus sylvestris 'Ravenswing' (Purple cow parsley): A dark leaved form of the common cow parsley. To 1.5m. Hardy. Tends to be biennial.

Campanula Iridescent Bells = 'Iribella' (PBR) (Bellflower 'Iridescent Bells'): Purple buds open to silvery-lilac bells in summer. Prefers a moisture retentive soil. Height to 80cm. Hardy

Cardamine quinquefolia: Light purple flowers emerge very early in spring, with attractive deeply divided leaves. Foliage dies down in summer.

Centaurea 'Jordy' (Perennial cornflower 'Jordy'): Beautiful maroon-purple flowers over felty silvery-green foliage.

Centaurea atropurpurea: Attractive deep-red, almost black thistle like flowers above silvery foliage. Good for bees and butterflies. Hardy. Up to 1m. [Collect Only]

Centaurea montana 'Violetta (Perennial cornflower 'Violetta'): Large purple cornflower-like flowers over grey-green foliage. Very attractive to bees and butterflies. Up to 40cm. Hardy.

Echinacea purpurea 'Green Twister' (Coneflower 'Green Twister'): A new variety with a unusual mix of purple and lime green flowers with upturned petals and a central dark cone. Hardy. Up to 60cm.

Erigeron 'Adria' (Fleabane 'Adria'): Mound forming perennial forming masses of semi-double purple flowers with central yellow disc. Hardy. Up to 60cm.

Erigeron 'Dunkelste Aller' (Fleabane 'Darkest of all'): Large purple daisy flowers over a long season in summer. Great in sunny, dry borders. To 30cm. Hardy [Collect Only]

Erigeron karvinskianus 'Lavender Lady' (Fleabane 'Lavender Lady'): A lavender flowered form of this delicate but robust daisy. Self-seeds around where happy. To 20cm. Hardy.

Festuca amethystina: Evergreen grass with elegant, dusky purple arching flower stalks very early in season, for a grass.

Geranium phaeum (Dusky cranesbill): Purple flowers with swept-back petals held high above soft green foliage. Early to flower, reliable and easy. To 60cm. Hardy.

Geranium phaeum 'Raven' (Dusky cranesbill 'Raven'): Dark purple flowers with long stamens and swept-back petals held high above soft green foliage. Great for shady areas. To 60cm. Hardy. [Collect Only]

Geranium wlassovianum: Warm purple flowers over attractive velvety foliage. Excellent autumn foliage colour.

Hosta 'Devon Green': Elegant hosta with tapering, dark green, fine-veined leaves. Lilac flowers in summer [Collect Only]

Hosta 'Patriot': Large green leaves cleanly edged in white. Lilac flowers in summer. To 50cm. Hardy. [Collect Only]

Hosta 'Praying Hands': Very upright, rippled leaves. Leaves are green, narrowly edged in white and curl up. Lilac flowers in summer. Hardy. Up to 40cm. AGM. [Collect Only]

Iris 'Langport Wren': Sword-shaped glaucous green leaves and stems of up to 4 flowers, with rich reddish-purple and deep maroon almost brown flowers. [Collect Only]

Lathyrus vernus (Spring pea): Two-tone purple and pink pea-like flowers in early spring. Thrives in shade, even quite dry shade. To 30cm. Hardy.

Limonium platyphyllum 'Violetta' (Broad leaved Statice 'Violetta'): A froth of tiny purple flowers in mid-summer on stiff stems. To 60cm. Hardy.

Liriope muscari 'Big Blue' (Blue turf lily 'Big Blue'): Spikes of vibrant purple flowers in autumn, larger than the usual form, evergreen strappy foliage. Good for dry shade. Hardy. Up to 50cm

Liriope muscari 'Royal Purple' (Blue turf lily 'Royal Purple'): Spikes of deep purple flowers in autumn above dark-green evergreen strappy foliage. Can tolerate dry shade. Hardy. Up to 50cm.

Molinia caerulea 'Transparent' (Purple moor grass 'Transparent'): Deciduous grass with long feathery purple flower spikes. Likes moist but well-drained soil in sun or light shade. Hardy. Up to 1.2m.

Monarda 'Prarienacht' (Bergamot 'Prarienacht'): Whorls of zingy purple flowers over bright green aromatic foliage. Very attractive to bees. Hardy. Up to 90cm.

Ophiopogon planescapus 'Nigrescens' (Black lilyturf): Jet back strappy leaves and purplish flowers in mid-summer. Widely and rightly used in modern planting schemes against silvery plants and paving.

Papaver orientale 'Patty's Plum' (Oriental poppy 'Patty's Plum'): Huge sultry, antique bronzey purple flowers held above green hairy leaves

Penstemon 'Pensham Plum Jerkum': Plum-purple tubular flowers with white throat markings. Semi-evergreen in milder areas. Protect from hard frosts. To 70cm.

Penstemon 'Raven': Darkest purple-red tubular flowers over semi-evergreen foliage.

Perovskia 'Blue Spire' (Russian Sage 'Blue Spire'): Fine spikes of purple flowers on silver stems. Lovely winter stem effect. Hardy. Up to 1m. [Collect Only]

Perovskia 'Filigran' (Russian Sage 'Filigran'): Silvery foliage & spikes of purple flowers in mid-summer. More upright than other cultivars. Lovely winter stem effect. Hardy. Up to 1.5m. [Collect Only]

Polemonium 'Heaven Scent' (PBR) (Jacob's Ladder Heaven Scent'): Lovely dark, purple foliage and stems in spring which contrasts well with the pale lilac purple bell like flowers. Lightly scented. Hardy. Up to 50cm.

Primula denticulata (Drumstick primula): Round heads of purple, occasionally white flowers above a rosette of green leaves.

Pulmonaria 'Diana Clare' (Lungwort 'Diana Clare'): Long, slender silver foliage and purple flowers in spring. To 30cm Hardy.

Pulsatilla vulgaris 'Papageno' (Pasque flower 'Papageno'): The petals are deeply dissected, giving a frilled, double effect. Usually purple but can be pink, reddish or white. Hardy. To 30cm

Salvia nemorosa 'Caradonna' (Balkan Clary 'Caradonna'): Rich purple spikes in early summer - just in time for Chelsea Flower Show at which is widely used.To 50cm. Hardy

Salvia x sylvestris 'Dear Anja' (Wood sage 'Dear Anja'): Spikes of lilac-purple flowers tipped with white. Aromatic foliage. Prefers a sunny spot with good drainage. Bees love it. Hardy. Up to 1m.

Salvia x sylvestris 'Mainacht' (Wood sage 'May Night'): Spikes of warm purplish blue flowers in mid-summer. Height to 70cm. Hardy.

Thalictrum 'Elin' (Rue 'Elin'): Tallest of the Thalictrums we grow with huge heads of lavender and yellow flowers in mid-late summer. To 2m. Hardy. [Collect Only]

Thalictrum delavayi (Chinese meadow rue): Dainty lilac-mauve flowers 2cm in width, with prominent creamy yellow stamens above fern-like bright green leaves. Hardy. Up to 1.5m.

Thalictrum delavayi 'Hewitt's Double' (Chinese meadow rue 'Hewitt's Double'): Tiny purple pom-pom flowers dance airily above ferny grey-green foliage. Height to 1.2m. Hardy

Tricyrtis formosana 'Dark Beauty' (Toadlily 'Dark Beauty'): Upright flower stems of star-shaped white flowers heavily spotted with blue/purple above dark-spotted lance-shaped leaves. Sheltered position. [Collect Only]

Verbena officinalis 'Bampton' (Vervain 'Bampton'): Attractive plant with dark purple foliage and upright, wiry stems with delicate purple flowers. Long flowering. Up to 90cm. Hardy. [Collect Only]

Veronica 'Purpleicious Harmony' (PBR) (Spiked speedwell 'Purpleicious'): Spikes of dark-purple flowers over a mound of shiny green leaves. Long-flowering and excellent as a cut flower. Hardy. Up to 50cm. [Collect Only]

Vinca minor 'Atropurpurea' (Small periwinkle 'Atropurpurea'): A compact mat-forming evergreen perennial with trailing stems of dark green leaves and dark purple flowers. Good in shade. Hardy ground cover.