We have found 306 plants that meet your criteria.

Agastache 'Black Adder' hyssop Distinctive violet, bottlebrush flowers £6.99 Buy
Allium hollandicum 'Purple Sensation' allium Rich, deep purple globes £6.99 Buy
Allium schoenoprasum chives Edible leaves and button-like flowers £4.99 Buy
Allium sphaerocephalon round-headed leek Small, wine-coloured flowers on tall stems £6.99 Buy
Allium 'Globemaster' ornamental onion Enormous, deep violet globes £7.99 Buy
Allium 'Schubertii' ornamental onion Giant pink starbursts £6.99 Buy
Angelica gigas angelica Tall, dramatic burgundy flowers £6.99 Buy
Aquilegia vulgaris var.stellata 'Black Barlow' (Barlow Series) granny's bonnet Striking dark purple, double flowers £5.99 Buy
Aquilegia vulgaris 'William Guinness' granny's bonnet Unusual purple-black flowers £5.99 Buy
Aster pyrenaeus 'Lutetia' michalmas daisy One of the most reliable asters £5.99 Buy
Aster sedifolius 'Nanus' michalmas daisy A small plant that has big impact £5.99 Buy
Campanula glomerata 'Superba' clustered bellflower Rich purple flowers in June £5.99 Buy
Campanula rotundifolia harebell Ideal for wildflower meadows or naturalised planting schemes £5.99 Buy
Campanula trachelium bats-in-the-belfry Common native hedgerow plant £1.49 Buy
Clematis 'Purple Spider' clematis (group 1) Often has a second flush of flowers £9.99 Buy
Cynara cardunculus 'Cardy' cardoon A fabulous architectural plant £6.99 Buy
Price Pruned
Deschampsia cespitosa tufted hair grass Ideal for sun or shade NOW £6.99 Buy
Dianthus amurensis pink A mat-forming pink with mauve flowers £5.99 Buy
Digitalis × mertonensis foxglove Towering spikes of carmine flowers £5.99 Buy
Digitalis purpurea foxglove A native foxglove £1.49 Buy