Heucherella Onyx

Foamy Bells

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Note: This plant is not currently for sale. This is an archive page preserved for informational use.

Tolerant of both heat and humidity, the glossy chocolate-black foliage stays neat and tidy all season long. Foliage undersides flash violet-red. Airy white flowers on dark stems open from pink buds.

Heucherella Onyx is compact and tidy with vigorous growth. A cross of Heuchera and Tiarella. Foamy Bells form an expanding mound flowering late spring into summer with strong leaf colors and great flowers. Versatile!


Type: Perennials
Height: Short 10" (15" in flower)
Spacing: Plant 16" apart
Bloom Time: Early Summer to Mid-Summer
Sun-Shade: Full Sun to Full Shade
Zones: 4-9   Find Your Zone
Soil Condition: Normal
Flower: White
Accent: White
Patent: PP29,926
Pot Size: 3.5" square x 4" deep

Features to Note

  • Attracts Butterflies
  • Dry Shade Tolerant
  • Groundcovers
  • Attracts Hummingbirds
  • Humidity Tolerant
  • OK in Containers

Heucherella General Information

Heucherella are an interesting cross of Heuchera and Tiarella. Forms an expanding mound flowering in late spring into early summer with strong leaf colors and great flowers. Versatile - excelling in the north, as well as the heat and humidity of the South. If grown in full sun, will need more moisture. Idaho has restricted all potted plant material from being shipped into Idaho at this time.

Heucherella Plant Care

Remove old stems of faded flowers for additional bloom and to tidy up so that the attractive foliage can be appreciated. Can be divided every 3-4 years in early spring. Remove and discard the old woody parts of the crown. In cold climates, winter mulch applied after the ground freezes will help prevent root heaving.