'Gold Heart' is a Dicentra plugged into the electrical grid with golden foliage that sets off the pink flowers to great effect.

Dicentra spectabilis 'Ruby Gold' is the gold-leaved form of 'Valentine' with red hearts dripping from red, arching stems and gold foliage.

Dicentra spectabilis 'Valentine' is a red form of the classic cottage garden favourite with flowers that are so dark pink they border on true red!

Dicentra 'White Gold' is white hot with pure white bleeding hearts arching over lustrous gold foliage. Awesome.

Dicentra 'Amore Rose' is a bleeding heart with rose-pink flowers for months over lacy foliage.

Dicentra Amore 'Titanium' is a bleeding heart with pure white flowers for months on end and lacy blue-green foliage.

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

Digitalis purpurea 'Dalmatian Peach' is a common foxglove with peach-tone flowers and orange speckled throats.

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.

One of the only shrubs that can be grown in the shade and still produce incredible fall colour.

Disporum cantoniense 'Moonlight' is an exceptional new cultivar with compact silvery white and green leaves.

Disporum cantoniense 'Night Heron' or Chinese fairy bells is a beautiful and stately evergreen perennial that emerges flushed with burgundy.

Disporum flavens is a easy woodlander with arching stems and terminal, bell-shaped, yellow flowers becoming black berries in late summer.

Dodecatheon meadia has loose umbels of pink flowers with dramatically reflexed petals like a badminton birdie.

Dodecatheon meadia 'Album' has loose umbels of pure white flowers with dramatically reflexed petals like a badminton birdie.

Dodecatheon meadia 'Queen Victoria' has loose umbels of pink to lavender-pink flowers with dramatically reflexed petals.

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.

A large, bold fern with shredded tips the length of the fronds.

Dryopteris affinis 'Cristata' aka 'The King' is a large, bold fern with crested tips.

A large fern with lustrous fronds centred with a dark central stipe.

Dryopteris championii is a large, evergreen fern with arching, dark green, glossy fronds.