Dicentra 'Burning Hearts' produces lusty deep red bleeding hearts edged in white atop ferny blue foliage.

Dicentra 'Love Hearts' has ivory white bleeding hearts with pink tips and a slight fragrance. Bluish foliage.

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.

Dierama dracomontanum is a compact species with showers of bell-shaped, salmony pink flowers in great numbers in summer.

Dierama igneum has showers of bell-shaped flowers deeply dissected into lobes in shades of magenta-red to tomato-red.

Dierama medium is an angel's fishing rod, also called lilac hairbell, with lovely bell-shaped purple to lilac flowers.

Dierama pauciflorum is a dwarf species with upright stems blooming in spring with magenta flowers long before other species.

Angel's fishing rod, Dierama pulcherrimum, is a stunning, long-lived perennial with perfectly formed bells in purple and magenta.

The Dierama Plantworld Jewels produce showers of perfectly formed bells in shades of white, lavender, purple, burgundy, and rose-red.

Dietes vegeta is an iris-like plant with narrow blades of foliage and white flowers accented with yellow and purple.

Digiplexis 'Firecracker' is a foxglove hybrid with orange-yellow flowers with rosy overtones and gray-green foliage.

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

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

Digitalis grandiflora (ambigua) 'Cream Bell' is a yellow foxglove with palest yellow flowers and orange-brown speckled throats.

Digitalis lanata 'Cafe Creme' is an unusual foxglove bronzy brown tubular flowers with protruding white lips.

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

Digitalis thapsi 'Spanish Peaks' is a reliably perennial selection noted for its lovely raspberry-rose flowers.

Digitalis x mertonensis is the Merton foxglove with rosy-pink flowers and darker speckled throats and lives longer than common foxglove.

Dodecatheon jeffreyi is a western North American native shooting star with loose umbels of pink, deep pink, or magenta flowers.

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.