Firecracker flower (Dichelostemma ida-maia) has cool red, green and white tubular flowers held in clusters.

Dichelostemma 'Pink Diamond' is a firecracker flower with lavender-pink, light pink and white flowers.

Dicksonia antarctica, the Tasmanian tree fern, is an impressive specimen and one of the oldest plants in the world.

Dicliptera suberecta is commonly known as the firecracker or hummingbird plant with nectar-filled, deep orange flowers.

Digiplexis 'Berry Canary' has hot pink foxglove-like, tubular flowers with creamy yellow throats.

Digiplexis Illumination 'Apricot' has gorgeous tubular flowers of light apricot-orange and warm yellow.

Digiplexis Illumination 'Flame' is like a foxglove crossed with a Hawaiian shirt with amazing colours of apricot-orange and reddish-magenta!

Digiplexis Illumination 'Raspberry' Improved has magenta-red flowers that bloom for months.

Digiplexis 'Rising Phoenix' is a sterile foxglove with tubular flowers of rosy-pink and light apricot hues on tall spires.

Dinteranthus vanzylii is related to Lithops. It is a lovely living stone in pastel shades of grey, lavender, and peach with subtlebrownish speckling.

Dinteranthus wilmotianus forms near spherical greyish white balls covered in subtle greyish spots and edged with yellow.

Venus flytraps (Dionaea muscipula) grow in nutrient poor bogs ensnaring prey to meet their nutritional needs.

Fishbone or zig zag cactus (Disocactus anguliger, syn. Epiphyllum anguliger) is an epiphytic cactus from Mexico.

Disocactus (syn. Epiphyllum) phyllanthoides, offers multitudes of 3-4 inch wide rose pink flowers with pale pink centres.

Dodecatheon pulchellum has pink flowers with reflexed petals and white and yellow highlights around near-black stamens.

Dodecatheon pulchellum 'Red Wings' has glowing magenta flowers with reflexed petals and white and yellow highlights.

Dodecatheon 'Aphrodite' is a hybrid of a North American native with reflexed pink petals with yellow and red highlights.

Dolichos lablab 'Ruby Moon' is a vine with lavender, pea-like flowers followed by large, purple pods held on purple stems amongst purple-infused foliage.

Doodia media (syn. Blechnum medium) is a stunning fern with bright red to pink new fronds that darken to green.

Dracunculus vulgaris is topped with a lurid 18 inch burgundy spathe with a columnar purple-black spadix.

Giant sea squill, Drimia (Urginea) maritima, produces huge bulbs with dramatic leathery leaves and amazing 4-6 foot tall spikes.

Drosera capensis, also known as Cape sundew, is a small, carnivorous plant native to the Cape of South Africa.

Dramatic burgundy rosettes of succulent foliage edged with dramatic white teeth. Fantastic pot specimen.

Dyckia 'Gran Marnier' is a stunning succulent with dramatically serrated silver leaves.

Dyckia 'Grape Jelly' is a bromeliad with dramatic burgundy rosettes of succulent foliage. A fantastic pot specimen and a good winter houseplant.