Heuchera 'Black Pearl' (Black Pearl alum root)


Botanical Information

FamilySaxifragaceae
GenusHeuchera
Cultivar'Black Pearl'
CategoryPerennials

Details

USDA Hardiness Zone6 - 7
USDA Hardiness Ref.
Canadian Hardiness Zone6b
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)(-20) - (-15)
Temperature (°F)4 - 5
Height0.1 - 0.5 m
Spread0.1 - 0.5 m
GrowthFast
Flowering PeriodJune, July, August

Description and Growing Information

General DescriptionA dense forming perennial with black leaves accented by red ruffled edges.
ShapeClump-forming.
LandscapeExcellent for rock gardens, borders and open woodland gardens, or as an edger along paths or walkways.
PropagationPropagate by division in autumn.
CultivationGrow in a rich, well-drained soil in full sun or partial shade, making sure to provide consistent moisture if grown in full sun in a warm area. Remove the stems of faded flowers to encourage further bloom.
PestsSusceptible to leafy gall (Corynebacterium fascians), and affected plants should be destroyed.
Notable SpecimensTrebah Gardens, Mawnan Smith, Nr Falmouth, Cornwall.
HabitatHorticultural origin.

Photographs