We have found 18 plants that meet your criteria.

Allium Purple Sensation ‘Allium hollandicum Purple Sensation’ Rich, deep purple globes £3.50 Buy
Price Pruned
Allium ‘Allium cristophii’ Huge globes of star-like, lilac flowers NOW £5.99 Buy
Allium cristophii ‘Allium cristophii’ Huge globes of star-like, lilac flowers £5.00 Buy
Allium ‘Allium hollandicum Purple Sensation’ Rich, deep purple globes £5.99 Buy
Round-headed Leek ‘Allium Sphaerocephalon’ Small, wine-coloured flowers on tall stems £4.00 Buy
Price Pruned
Standard Bay with Love Heart... ‘Laurus noblis’ NOW £149.99 Buy
New Zealand Flax ‘Phormium Platt's Black’ Dramatic, almost black, strappy foliage £13.99 Buy
Single Late Tulip ‘Tulia El Nino’ Probably our tallest tulip £4.00 Buy
Single Late Tulip ‘Tulipa Caravelle’ Perfect for adding height to bedding displays £4.00 Buy
Senecio ‘Brachyglottis (Dunedin Group) Sunshine’ Yellow flowers and silver leaves £6.99 Buy
Camellia ‘Camellia hiemalis Sparkling Burgundy’ Showy, ruby-red flowers in winter £12.99 Buy
Camellia ‘Camellia x williamsii Debbie’ Neat, rose pink flowers in spring £12.99 Buy
Camellia ‘Camellia x williamsii Jury's Yellow’ One of the best for producing loads of flowers £12.99 Buy
Carpenteria ‘Carpenteria californica’ Handsome glossy leaves large flowers £19.99 Buy
Fuchsia ‘Fuchsia Riccartonii’ Delicate, scarlet and dark purple flowers £5.99 Buy
Hibiscus (syn. Hibiscus syriacus Blue... ‘Hibiscus syriacus Oiseau Bleu’ Late flowering shrub with... £9.99 Buy
Corkscrew Stem Standard Bay ‘Laurus nobilis’ Fabulous by the side of door £79.99 Buy
Price Pruned
Myrtle ‘Myrtus communis subsp. tarentina’ Scented pink tinted flowers small neat aromatic leaves NOW £12.99 Buy