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

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Common Name

Foamy bells

Family

Saxifragaceae

Genus

species

hybrid

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
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Heucherella 'Onyx' - Growing Recipe
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