Heuchera 'Obsidian' (Coral Bells) — dramatic, glossy, near-black leaves that retain their intense colour year-round, topped with dainty creamy-white flowers. Evergreen, performs well in full sun to full shade, retaining its dark colour better in sun than most varieties.
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🌿 Grown at our London nursery — collect in person or arrange local delivery
📦 Dispatched within 3 business days via Royal Mail
Product features
Botanical name: Heuchera 'Obsidian'
Common name: Alum root, Coral bells
Height: 25cm–40cm (spikes to 60cm)
Spread: 30cm to 50cm
Foliage: Dramatic, glossy, near-black or deep maroon-purple leaves year-round
Flower: Creamy-white bells on dark stems, June to August
Attractive to wildlife: Highly attractive to bees and pollinators
Soil Type: Fertile, moist but well-drained soil
Drought tolerant: Moderately tolerant, prefers consistent moisture
Hardy: Fully hardy (RHS H6)
Position: Full sun or partial shade; retains dark colour well in sun
Evergreen: Yes (semi-evergreen in very cold regions)
Suitable for: Garden edging, ground cover, mixed borders
Materials and care
Light: Full sun to full shade — sunlight deepens its glossy black hue
Aspect: Exceptionally versatile, any border aspect
Soil type: Fertile, humus-rich soils
Drainage: Requires well-drained soil
Watering: Water regularly for consistent moisture
Deadheading: Snip spent flower stems down to the base
End of season: Remove tattered leaves in late autumn or early spring
Propagation: Lift and divide woody crowns every 3 years in spring
