| Name |
Cold / Heat
Zones |
Height/Width |
Comments |
| Bearded iris Iris 'Superstition' |
3 to 9/
9 to 1 |
30 to 36 in./
18 in. |
Perennial with purple-black flowers; late-spring bloom; easy to grow; full sun; well-drained soil |
| Black iris Iris chrysographes |
3 to 9/
9 to 1 |
24 in./10 in. |
Hardy bulb with velvety ebony-black flowers in June; swordlike green foliage; full sun to part shade |
| Black
or chocolate cosmos Cosmos atrosanguineus |
7 to 10/
10 to 1 |
30 in./18 in. |
Perennial; velvety maroon-black flowers in midsummer to autumn; flowers lightly chocolate scented; full sun; well-drained soil |
| Clematis Clematis 'Romantika' |
4 to 9/
9 to 1 |
8 to 10 ft./
3 to 4 ft. |
Vine; large purple-black flowers; pruning group 3; flowers midsummer; sun to part shade |
| Dahlia Dahlia 'Arabian Night' |
8 to 11/
12 to 1 |
36 in./24 in. |
Tender tuber, dig and store for winter in cold climates; dinner plate blooms of maroon-black; full sun; well-drained soil |
| Daylily Hemerocallis 'Starling' |
3 to 9/
9 to 1 |
26 to 30 in./
24 in. |
Perennial; velvety deep-chocolate and mahogany-black blend with a golden throat; 6-in.-wide blooms in June and July; full sun; well-drained soil |
| Fritillaria Fritillaria persica |
6 to 8/
8 to 1 |
3 ft./6 in. |
Bulbous erennial with tall stems; burgundy-black flowers in spring; sun to part shade |
| Geranium Geranium phaeum 'Samobor' |
3 to 8/
8 to 1 |
14 to 16 in./
14 to 18 in. |
Perennial with maroon-black flowers in May and June; leaves marked with brown blotch |
| Nemophila Nemophila menziesii 'Pennie Black' |
Annual/
12 to 1 |
12 in./10 in. |
Annual; five-petaled purple-black flowers with a scalloped edge of white; sow seed directly in early spring; full sun to part shade |
| Pincushion flower Scabiosa atropurpurea 'Ace of Spades' |
Annual/
12 to 1 |
24 to 36 in./
15 to 18 in. |
Annual; pincushionlike purple-black flowers; sow seed directly in early spring; flowers in summer; good cut flower; full sun |
| Purple gooseneck loosestrife Lysimachia atropurpurea |
6 to 9/
9 to 1 |
18 in./15 in. |
Perennial; spikes of red-black flowers in mid- to late summer; also good in containers; full sun to part shade; moist soil |
| Sweet William Dianthus barbatus nigrescens 'Sooty' |
4 to 10/
10 to 1 |
15 in./12 in. |
Perennial; maroon-chocolate flowers on red stems; fragrant, early summer blooms; full sun to part shade; well-drained soil |
| Whipple's beardtongue Penstemon whippleanus |
4 to 8/
8 to 1 |
2 ft./1 ft. |
Perennial; clusters of black flowers open in late July to early August; full sun; well-drained, slightly alkaline soil |
