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

Centaurea montana 'Parham' (Perennial cornflower 'Parham'): Large lavender purple fluffy flowers over silvery-green foliage. To 40cm. Hardy

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

Geranium maculatum 'Beth Chatto' (Spotted cranesbill 'Beth Chatto'): Very pretty palest purple flowers held above attractive green foliage. To 50cm. Hardy.

Geranium maculatum 'Vickie Lynn' (Spotted cranesbill 'Vickie Lynn'): Pale lavender flowers above a clump of fresh green divided leaves. Prefers soil that doesn't dry out in summer. Hardy. Up to 45cm.

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

Geranium x magnificum 'Rosemoor' (Purple cranesbill 'Rosemoor'): A mass of large purple flowers in early summer. Large, slightly felty leaves with good autumn colour.

Hosta 'Halcyon': Medium sized Hosta with attractive blue-grey heart-shaped leaves and pale lavender purple flowers. Hardy. Up to 40cm.

Hosta 'June': A popular cultivar. Glaucous blue green heart-shaped leaves with yellow-green variegation in the leaf centre. Purple flowers. Hardy. Up to 50cm.

Liriope '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.

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.

Polemonium 'Lambrook Mauve': Sprays of light purple-pink bell-shaped flowers with a yellow centre above fresh green ferny foliage. Hardy. Up to 60cm.

Salvia nemorosa 'Ostfriesland' (Balkan Clary 'Ostfriesland'): Masses of upright spikes of purple flowers in mid summer. Easy and trouble free. To 50cm. Hardy [Collect Only]

Sedum telephium 'Purple Emperor' (Syn. Hylotelephium telephium 'Purple Emperor'): A fine sedum with purple, almost metallic fleshy leaves and flattish heads of purple-red flowers in late summer.