We have found 46 plants that meet your criteria.

black-eyed Susan
Rudbeckia occidentalis 'Green Wizard' black-eyed Susan Bright green sepals with black centres £6.99 Buy
coneflower
Rudbeckia occidentalis 'Green Wizard' coneflower Extraordinary and exotic-looking flowers £2.99 Buy
black elder (syn. Black Beauty)
Sambucus nigra f. porphyrophylla 'Gerda' (PBR) black elder (syn. Black Beauty)... Dramatic purple foliage £10.99 Buy
sweet scabious
Scabiosa atropurpurea 'Black Knight' sweet scabious Opulent colour for the border £2.99 Buy
nasturtium
Tropaeolum 'Black Velvet' nasturtium Sumptuous colouring £2.49 Buy
red hook sedge
Uncinia rubra red hook sedge Wonderful deep bronzy-red foliage £7.99 Buy
Price Pruned
Lenten Rose hellebore
Helleborus × hybridus 'Harvington Shades of the Night' Lenten Rose hellebore Early spring flowers in... NOW £9.99 Buy
beard tongue
Penstemon 'Raven' beard tongue Dramatic, deep purple, foxglove-like flowers £6.99 Buy
Crocus Special Offers
New Tulip collection Buy 30 tulips for £18.95 + get... NOW £0.00 Buy
New
Tulipa Black Parrot & Erysiumum cheiri Blood Red A brooding and sumptuous... £0.00 Buy
New
Tulipa Shirley & Tulipa Queen of Night Dramatic without becoming overpowering £0.00 Buy
daylily
Hemerocallis 'American Revolution' daylily Large, deep blood-red flowers in summer £8.49 coming soon
New
spencer sweet pea Beaujolais
Lathyrus odoratus 'Beaujolais' spencer sweet pea Beaujolais One of the darkest forms £6.99 coming soon
Price Pruned
tree peony / tree paeony
Paeonia delavayi tree peony / tree paeony... Tree peony with deep, maroon flowers NOW £19.99 coming soon
pincushion flower
Scabiosa atropurpurea 'Chile Black' pincushion flower Deep claret, almost black flowers £6.99 coming soon
amaryllis Black Pearl bulb
Hippeastrum 'Black Pearl' amaryllis Black Pearl bulb Stunning dark maroon flowers £7.99 coming soon
New
hyacinth
Hyacinthus 'Dark Dimension' hyacinth Darkly delicious £3.99 coming soon
Polyanthus Gold Lace
Primula Gold-laced Group Polyanthus Gold Lace This new variety has all the old world charm £5.99 coming soon
moor grass
Sesleria autumnalis moor grass Perfect for informal edging £7.99 coming soon
double late tulip bulbs
Tulipa 'Black Hero' double late tulip bulbs Almost black double flowers £5.99 coming soon