Heucherella 'Onyx'Heucherella 'Onyx'

Heucherella ‘Onyx’

True black, glossy, deeply cut leaves on a dense medium size mound make this a great landscape plant. We've been working for years to get a good black Heucherella. This is it. Loves heat and humidity but great in the northwest. Shy to bloom – always stays neat and clean. Great foliage for mixed containers.

USDA Hardiness Zone(s): 4-9
Size (HT/W/FL HT): 10″ / 16″ / 15″
Exposure: Part Shade, Full Sun, Full Shade
Bloom Time(s): June, July

Common Name Foamy bells
Family Saxifragaceae
species --
Plant Type
US Patent # PP29926
EU Grant # --
Bloom Time ,
Flower Color --
Foliage Color ,
Dormancy Winter
Exposure , ,
Growth Habit
Growth Rate
Hardiness Zone , , , , ,
How Different? --
Landscape Value Mass planting, accent, container, border or mixed beds.
Most Active Growing Season
Persistence Evergreen
Size (HT/W/FL HT) 10" / 16" / 15"
Soil (Garden) Prefers well-drained, humus rich soils.
Water (Garden) Average. They like more moisture than the Heuchera.
Special Uses ,
Comments --
Water (Greenhouse) Dry moderatley between waterings.
EC 0.6 – 0.9
pH 5.5 – 6.5
Fertility Needs 100 – 150 ppm
Notes Be careful not to bury the crowns when planting.
Finish Time to 4″ 4 – 6 weeks
Finish Time to Gallon 8 – 10 weeks
Day Length for Flowering Day Neutral
Heucherella 'Onyx' - Product Profile
Heucherella 'Onyx' - Growing Recipe

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