Heuchera 'Obsidian' (1 Gallon) Coral Bells

About this item

Make a bold statement in the garden with Heuchera 'Obsidian', an exceptional evergreen-to-semi-evergreen perennial prized for its remarkably glossy, deep purple foliage that appears almost black. Also known as Coral Bells or Alumroot, this compact, clump-forming perennial provides dramatic color, beautiful texture, and year-round garden interest.

The smooth, rounded leaves form a dense, attractive mound, maintaining their rich, dark coloration throughout the growing season. In late spring to early summer, delicate sprays of tiny creamy-white to pale green, bell-shaped flowers rise above the foliage on slender stems, creating an elegant contrast against the nearly black leaves.

Plant Characteristics

• Foliage: Glossy, rounded leaves in rich shades of deep purple, burgundy, and near-black. The striking foliage retains its beautiful dark coloration throughout the season.

• Flowers: Airy stems bearing delicate, creamy-white to pale green bell-shaped flowers appear in late spring to early summer, reaching approximately 20–24 inches tall.

• Size: Forms a compact mound approximately 8–10 inches tall and 12–16 inches wide.

• Growth Habit: Neat, clump-forming perennial with a dense, mounding habit.

• Hardiness: USDA Zones 4–9.

Growing & Care

• Light: Prefers partial shade, particularly protection from hot afternoon sun. In cooler climates, it can tolerate more sunlight with adequate moisture.

• Soil: Grows best in rich, humus-filled, well-draining soil with consistent moisture. Avoid waterlogged conditions, as excessive moisture around the crown can lead to root rot.

• Water: Water regularly to maintain evenly moist soil, especially during hot, dry weather and while plants are becoming established.

• Maintenance: An easy-care perennial that requires minimal attention. Remove damaged or tattered foliage in early spring to encourage fresh, healthy growth. In colder climates, a light winter mulch can help protect the crown from frost heaving.

• Wildlife: Generally resistant to deer and many common garden pests. Its delicate flowers can attract hummingbirds and butterflies.

Landscape Uses

Perfect for adding dramatic foliage contrast to shaded garden spaces, 'Obsidian' is an excellent choice for border edging, woodland gardens, mass plantings, and mixed perennial beds. Its compact size also makes it ideal for patio containers, where its nearly black foliage pairs beautifully with chartreuse, golden, silver, and bright green-leaved plants.

With its lustrous, almost-black foliage and delicate flowers, Obsidian Coral Bells brings sophisticated color, texture, and striking contrast to gardens and container arrangements throughout the seasons.