Onyx Foamy Bells

Onyx Foamy Bells (Heucherella 'Onyx')

Onyx Foamy Bells (Heucherella 'Onyx') is a bold, compact perennial prized for its deeply lobed, jet-black foliage that provides striking contrast in shaded and partially shaded gardens. A hybrid between Heuchera and Tiarella, this variety blends the best traits of both parents - dramatic leaf color, tidy habit, and reliable performance - making it a standout in containers, borders, and woodland plantings.

Distinctive Features

'Onyx' forms a dense, low mound of uniquely cut, near-black leaves with a satin finish. In late spring to early summer, delicate white to pale pink foamy bell-shaped flowers rise on slender stems above the foliage, adding light texture and pollinator interest. Mature plants reach 8 to 10 inches tall (up to 16 inches in bloom) and spread 12 to 16 inches, creating a dark, elegant presence in the garden.

Growing Conditions

• Sun Exposure: Partial shade to full shade (tolerates morning sun in cooler climates).
• Soil: Prefers moist, well-drained, humus-rich soil.
• Water: Moderate water needs; avoid letting soil dry out completely.
• Humidity: Prefers moderate humidity; good airflow helps prevent mildew.
• USDA Hardiness Zones: 4-9, offering excellent cold hardiness and versatility.

Ideal Uses

• Shade Borders: Adds dark contrast among ferns and hostas.
• Containers and Patio Pots: Makes an eye-catching foliage focal point.
• Woodland Gardens: Thrives in dappled light with spring ephemerals and other shade perennials.
• Edging and Pathways: Neat habit provides soft structure along garden paths.
• Foliage Contrast: Enhances mixed plantings with bold, dark leaves.

Low Maintenance Care

Onyx Foamy Bells is an easy-to-grow, low-maintenance perennial that rewards with stunning foliage and long-lasting garden appeal.

• Watering: Keep soil evenly moist but not soggy; mulch to conserve moisture.
• Pruning: Remove faded flower stalks and damaged leaves to maintain a tidy appearance.
• Fertilizing: Light feeding in spring with a balanced fertilizer supports healthy growth.
• Pest and Disease Resistance: Resistant to deer and rabbits; generally pest-free with good air circulation.
• Winter Care: Evergreen in mild climates; mulch in colder zones to protect the crown.

Why Choose Onyx Foamy Bells?

Onyx Foamy Bells delivers stunning dark foliage, refined texture, and adaptability in shady landscapes with minimal care.

• Jet-Black Foliage: Adds dramatic color and texture to garden beds and containers.
• Compact Growth Habit: Ideal for small spaces and layering in borders.
• Shade-Tolerant: Thrives in low-light conditions where color is often lacking.
• Pollinator-Friendly Blooms: Delicate spring flowers attract bees and butterflies.
• Low Maintenance: Easy to grow and long-lasting in the right conditions.

For a standout foliage plant that adds rich color and elegance to shaded spaces, Onyx Foamy Bells (Heucherella 'Onyx') is an exceptional choice.