(Under Construction)
Black, Red, or Purple in Color
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1) Black Night Iris (Iris chrysographes) Grows to about 24" in height, and blooms in late spring. Prefers sun or partial shade. Germination process make take up to a year, but this variety is easy maintenance afterward. Best in deep, moist soil.  |
2) Black Hollyhock (Alcea nigra) Dark purple-maroon to black flowers growing 5 - 8 feet. Blooms all summer long. Zone 4-9. Biennial  |
3) Black Bat Flower (Tacca chantrieri) Purple-brown, nearly-black bracts that form part of the inflorescence. Glossy leaves. Warm temperatures and prefers humid, moist and shady conditions. Grows 2 - 3 feet in height. Not an easy plant to grow and seeds sometimes take several months to germinate. Zone 10+  |
4) Black Prince Pansy (Viola x wittrockiana) Purple-black flowers with golden centers, occasionally accented with a hint of white. Hardy variety. Annual. Zone 4-8.  |
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5) Sooty Sweet William (Dianthus barbatus Nigrescens) Black-maroon petals. Cold weather variety. Biennial Can be used as a bedding plant. 12-15" in height. Blooms in summer. Full sun or light shade. Zone 4-9  |
6) Black Viola (Viola nigra 'Bowles Black') Velvet black blooms appear as soon as 60 days from seed. Blooms from spring to fall. Likes water. Easy to grow. 6-9 in height inches. Zone 4-9.  |
7) Magpie Columbine (Aquilegia vulgaris) Purple-black & white. Grows to about 24" in height. Likes moist, but well drained soil. Best in temps of 65-70 degrees F. Annual. Zone 3-8.  |
8) Jasmine Tobacco (Nicotiana alata) 18"-3' in height, with 12" spread. Full to partial shade. Regular watering, with well drained soil of high organic content. Blooms during the summer. Annual.  |
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9) Black Hero Tulip Burgundy-black with a light fragrance, this variety grows to about 24" in height. Blooms in late spring. Likes full sun. Zones 3-8.  |
10) Jack-in-the-Pulpit (Arisaema elephas) Tuber plant in dark mahagony, green, and white colors. Grows to about 150cm tall in moist climates.  |
11) Dragon Flower (Dracunculus vulgaris) Grows to about 10" in height. Resembles a calla lily, but is a deep reddish purple in color. There are occasionally silver speckles present. The spadix is almost black, and this flower is scented until pollination. Grows in full sun to partial shade. 
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12) Queen of Night Tulip Full to partial sun. Grows to 24" in height. Blooms in late spring. 
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13) Mourning Widow (Geranium phaeum) A hardy species that grows in full sun to shade. Likes acidic soil that is dry or moist. 
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14) Black Velvet (Uncle Tom) Tulip Same as with Black Hero, but this variety is a dark crimson in color.  |
15) Black Calla Lily (Arum palaestinum) Grows to a height of between 18" and 24". Prefers light shade. Blooms in mid spring. Zones 9-11. 
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16) Western Cone Flower (Rudbeckia occidentalis) Grows 3'-5' in height, with conal protrusions of 3"-5" across. Blooms July-September. Likes sun to partial sun. Average water. Perennial.  |
Grasses and Foliage
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17) Red Dragon (Persicaria microcephala) Reaches a height of 24" and spans a distance between 30" and 40". A vigorous grower, this foliage is well suited for surrounding other plants, and though it blooms white flowers, they are small. Tolerates almost any soil condition, and can be placed in containers for tight spots. 
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18) Sparkling Burgundy Pineapple Lily (Eucomis comosus) Grows between 12" and 24". Blooms in summer and requires partial shade. Grows best in clay or sandy soil, watered regularly. 
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19) Purple Heron Purple leaves and mauve flowers during the summer. Will grow to from between 8"-10" in height, and prefers sun to partial shade in well drained soil.  |
20) Palisandra (Coleus scutellariodes) Grows to a height of about 10". Likes sun to partial shade. A very hardy variety, with velvet-like leaves. Can be planted almost anywhere.  |
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21) Hillside Black Beauty (Cimicifuga racemosa) Hardy perennial for moist shade. In the fall, 6-foot flower stems bearing foot-long bottlebrushes of creamy white fragrant flowers rise from the dark mound of leaves.  |
22) Black Lace (Sambucus nigra) Has dramatic, almost black, dissected foliage and produces beautiful creamy pink buds and flowers May to June, with flowers clusters measuring 15cm in diameter. These are followed by blackish-red berries in the fall that are in dangling clusters. Sun to partial shade, but will live during frost. It will reach 3m x 3m in five years but with regular pruning it can be restricted to 2m.  |
23) Nigrescens (Ophiopogon planiscapus) Black foliage with small bluish tinged flowers followed by blue-black berries. Moist, well drained soil, but will thrive in the roughest conditions.  |
24) Black Magic (Colocasia esculenta) Black Leaf Elephant Ear Moisture loving, will grow to about 60" in height and spread the same distance. Likes sun to partial sun. Zones 7-10.  |
Meredith's list from Witches Three yahoo group...
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Superstition Bearded Iris (Iris germanicus) Deep purple to black in color. Grows to about 30" in height. Prefers full sun. Best in zone 3.  |
Chocolate Cosmos (Cosmos atrosanguineus) Grows to a height of 30'. Prefers full sun and blooms from July-October. Smells like chocolate! 
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Arabian Night Dahlia Requires full sun and is one of the less hearty varieties. Most suitable for an experienced gardener. Grows in well drained soil, clay, or sand and grows to about 4' in height, with a 4"-6" spread. Blooms July-October. No scent. 
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Fritillaria of Persia (Fritillary persica) Blooms in mid spring with stalks of 3'-4' in height. Bulbs require being planted at least 6"-8" deep. Zones 3-8. 
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Ace of Spades (Scaboius atropurpurea) An easily grown variety that reaches about 30" in height. Prefers full sun and blooms during the summer. Lightly scented.  |
Chile Black (Scabious |
Purple Gooseneck Loosestrife (Lysimachia atropurpurea) |
Whipple's Beardtongue (Penstemon whippleanus) |
Japanese blood grass (Imperata cylindrica) |
Black Salvia (Andean Silver Leaf) (Papaver) Cultivar: 'Black Paeony' |
Molly Sanderson Genus: Viola | Peony's ~Guan Shi Mo Yu | Black Jade Paragon ~Hei Hua Kui | Champion of Black Flowers ~Qing Long Wo Mo Chi | Green Dragon Reclining in Black Ink ~ Wu Jin Yao Hui |
| Glittering Gold on Black ~Yan Long Zi | Purple Velvet |
Tip for Black Plants
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Your black plants are turning green? For foliage, it is all to do with pigment, a pigment depending usually on sun and light. It also depends on pH, and feed. Treat your black plants well, give them the right conditions, they will reward you by shining like the night. Black plants will often turn green under cover in a greenhouse and also if overshadowed by other foliage.