Heuchera ‘Obsidian’
$1,234,567.89
Near-black rounded leaves form a compact mound beneath airy cream-white flowers.
- Description
- Additional information
Description
Heuchera ‘Obsidian’ forms a compact, rounded mound of remarkably dark foliage. The shallowly lobed leaves open reddish black in spring and deepen toward near-black in summer, while airy clusters of tiny white-to-cream flowers rise on dark reddish stems from late spring through summer.
Grow it in full sun or partial shade in fertile, neutral, moist but well-drained loam or sandy soil. Dark leaf color can intensify with sun, but avoid prolonged drought and waterlogged ground. Keep the crown at or slightly above soil level, mulch annually, and space plants about 35 centimeters apart.
Use this polished dark-leaved perennial for edging, groundcover, containers, or underplanting where it can contrast with gold grasses and fresh green foliage. Remove dead leaves and spent flowers, and divide the clump every few years to keep the crown healthy.
Additional information
| Height | 23 cm – 50 cm |
|---|---|
| Spread | 35 cm – 40 cm |
| Flowering months | May, June, July, August |
| Synonyms | Heuchera 'Obsidian', Heuchera micrantha Obsidian, Heuchera Obsidian Rainbow Series |
| Family | Saxifragaceae |
| Propagation | Divide established clumps in spring, selecting vigorous outer sections with good roots and two or three shoots. |
| Pests | May be affected by leaf and bud eelworms and vine weevil. |
| Diseases | May be affected by heuchera rust; the cultivar has shown excellent resistance to powdery mildew. |
| Pruning | Remove dead leaves and deadhead spent flower stems. |
| Hazardous | unknown |
| Variegated | no |
| Watering instructions | Keep the soil moist but not wet, water newly planted clumps regularly through the first growing season, and provide occasional summer water once established. |
| Sunlight instructions | Grow in full sun or partial shade; provide reliable moisture where the position receives stronger sun. |
| Color flower spring | White, Pink |
| Color flower summer | White, Pink, Cream |
| Aspect | East, South, West, North |
| Foliage | Semi-evergreen |
| Habit | Clump-former |
| Moisture | Moist but Well Drained |
| Ph | Neutral |
| Position | Full sun, Partial shade |
| Shape | Mound-forming |
| Type | Perennial |
| Use for | Ground cover, Underplanting, Container Planting |
| Years to max height | 2 |
| Drought resistance | yes |
| Soil | Loam, Sand |
| Local names | Obsidian coral bells, Alum root 'Obsidian', Purpurglöckchen 'Obsidian' |
| Blomidon Item No | MO23036561, ZHEUOB0001G |