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Obsidian Alum Root

Heuchera 'Obsidian'

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Overview

Heuchera 'Obsidian', known as Obsidian Alum Root, is cherished for its stunning, nearly black, glossy foliage. This evergreen perennial forms a compact mound about 10 inches high and 16 inches wide. In late spring, delicate cream flowers on slender 20-inch stems rise above the leaves. It prefers partial shade and moist, well-draining soil. Hardiness ranges from USDA zones 4-9, adding a dramatic touch to borders and containers.

Sun Half, ShadeWater Low, MediumZones 4–9Type Perennial
Obsidian Alum Root (Heuchera 'Obsidian') — Heuchera 'Obsidian', known as Obsidian Alum Root, is cherished for its stunning, nearly black, glossy foliage

Culture

Sun
Half, Shade
Water
Low, Medium
USDA zones
4–9

Shape & size

Classification

Type
Perennial
Family
Saxifragaceae

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Photos

Obsidian Alum Root (Heuchera 'Obsidian') — Heuchera 'Obsidian', known as Obsidian Alum Root, is cherished for its stunning, nearly black, glossy foliage

Photograph: David J. Stang, CC BY-SA 4.0 · source

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