If you have the space in your garden this is one plant to choose. Acanthus are robust perennials with handsome, lobed foliage. In late summer, tall racemes of white flowers with dusky purple bracts appear. Used as a motive in architecture and art through ages, Acanthus is a true architectural beauty!

Hollyhocks are a mysterious and prolific flower with a long and rich history. Traditionally associated with cottage-style borders, the dramatic, near-black flowers of Nigra work equally well in a contemporary, minimalist garden. This unique variety creates an impressive impact against most backgrounds.

Eye-catching, purple-black flowers with contrasting white centres appear in late spring and early summer above fern-like, mid-green leaves this variety is something special.

'Black ball' flowers are a lovely rich milk-chocolate hue, almost black on cloudy days! These beauties grow well as border plants and are wonderful in a cutting garden; they look fabulous clustered among other contrasting flowers such as roses.

Dierama “Blackberry Bells” is a vigorous hybrid Dierama. It has inheriting some of the darkness from 'Cosmos' but with much larger, deep purple-maroon flared trumpets that dangle from graceful arching stems. A desirable addition to any herbaceous border or gravel garden.

Dierama mossii is an exceptional species. This delicate dwarf form has unusually thin, strong wiry stems carrying clusters of tubular claret bells. Making a welcome appearance in spring, before any of the larger dieramas. They are excellent for cutting or as a specimen container plant.

“Blackbird“ is an exquisitely beautiful variety. Perhaps the darkest flowered of all Dieramas, from June to August it produces cascades of gorgeous, deep claret-mauve blooms. Each bud expands into a pendant flower so graceful that even on the calmest of days providing continual movement in the garden.

Dierama riparia is a very rare, newly introduced semi-dwarf species. Originally it was difficult to confirm the species as the only Dierama monograph just had a photo of a dried herbarium specimen! Growing to only 90cm tall, they bear on slender stalks, tissue-fine pink-purple pendant flowers. Simply stunning.

An aristocrat from Spain with densely packed spikes of cylindrical small chocolate funnels above dark green coloured glossy leaves. The rich foliage has a sheen that sets these dramatic flower spikes off wonderfully. A plant that will stop viewers in their tracks and have them enquiring its identity.

Geranium phaeum ‘Samobor’ has considerable charm, with luxurious, deep maroon-black flowers which are held high on upright slender stems in late spring to early summer. This beautiful and useful hardy geranium is loved for its amazing deeply scalloped foliage with beautiful dark markings

Originating from one of the country's top hellebore breeders. Hellebore 'Black Beauty' is a choice variety. The deepest plums and purples open from slate coloured buds, many plants having the extra bonus of the dark foliage of their parents.

The Japanese started selecting morning glories in the 9th century, and this is one of their most stunning. This show-stopper morning glory sports huge blooms with a pronounced milk chocolate colour. The extraordinary blooms can be 15cm wide and in a good summer it will reach 9ft tall. Gorgeous.

Kniola's Black Knight has stunning deep-dark velvety purple-black flowers with cerise throats leading to an ivory eye. This extremely carefree and free-blooming climber will bloom early and load itself with masses of attractive dark purple-black flowers all summer long.