We have found 110 plants that meet your criteria.

Hyssop ‘Agastache Black Adder’ Distinctive violet, bottlebrush flowers £5.45 Buy
Angelica ‘Angelica gigas’ Tall, dramatic burgundy flowers £6.95 Buy
Price Pruned
Granny's Bonnet ‘Aquilegia vulgaris var. stellata Black Barlow’ Striking dark purple, double flowers NOW £4.95 Buy
New England Aster ‘Aster novae-angliae Violetta’ Beautiful deep purple flowers £5.95 Buy
Michaelmas Daisy ‘Aster novi-belgii Purple Dome’ Masses of violet-purple flowers in late summer £5.95 Buy
Michaelmas Daisy ‘Aster pyrenaeus Lutetia’ One of the most reliable asters £5.45 Buy
Michaelmas Daisy ‘Aster sedifolius nanus’ A small plant that has big impact £5.95 Buy
Crocus Special Offers
Michaelmas Daisy ‘Aster turbinellus’ Sprays of violet blue flowers NOW £3.95 Buy
Masterwort ‘Astrantia major Rubra’ Gorgeous plum-coloured flowers £5.95 Buy
Butterfly Collection ‘Butterfly Collection Butterfly Collection’ Summer-flowering wildflowers £2.99 Buy
Price Pruned
Dalmatian Bellflower ‘Campanula portenschlagiana’ Vigorous and low-growing NOW £4.95 Buy
Cardoon ‘Cynara cardunculus Cardy’ A fabulous architectural plant £5.95 Buy
Price Pruned
Delphinium ‘Delphinium Walton Gemstone’ White flowers with a lavender blush NOW £7.95 Buy
Crocus Special Offers
Pride of Madeira ‘Echium candicans’ Dramatic purple spikes in early summer. Drought tolerant NOW £3.45 Buy
Tower of Jewels ‘Echium pininana’ Enormous spikes of blue flowers £6.95 Buy
Pineapple Lily ‘Eucomis bicolor’ Huge, exotic, spiky flowers £6.95 Buy
Balkan Cranesbill ‘Geranium macrorrhizum Bevan's Variety’ Magenta flowers. Perfect for suppressing weeds £5.95 Buy
Price Pruned
Dusky Cranesbill ‘Geranium phaeum var. phaeum Samobor’ Small, purple-black flowers. Good for damp or dry shade NOW £5.45 Buy
Cranesbill ‘Geranium pratense Midnight Reiter’ Unusual deep purple foliage £5.95 Buy
Armenian Cranesbill ‘Geranium psilostemon’ Gorgeous magenta flowers with black centres £5.95 Buy