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.

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 pratense 'Dark Reiter' (Meadow cranesbill 'Dark Reiter'): Dark purple/bronze leaves with single purple flowers in mid-summer. To 40cm. Hardy

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.

Hosta 'Sum and Substance': Large, bright green leaves. lavender flowers, good in shade or sun. Hardy. To 60cm high and wide. [Collect Only]

Penstemon 'Raven': Darkest purple-red tubular flowers over semi-evergreen foliage. [Collect Only]

Salvia verticillata 'Purple Rain' (Whorled Clary 'Purple Rain'): Purple flowers on slightly arching stems above soft, grey-green leaves. Hardy. To 60cm. [Collect Only]

Stachys officinalis 'Hummelo' (Betony 'Hummelo'): Upright spikes of rosy purple flowers above pointed dark green foliage. Very attractive to bees. To 50cm. Hardy.