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Herbaceous Perennial

Heuchera 'Blackberry Jam'
  • RHS AGM

alum root 'Blackberry Jam'

'Blackberry Jam' is a clump forming perennial, dark red-purple palmate leaves, with ebony veining and glossy silver sheen. Panicles of small white flowers

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Red Purple
Summer White Grey Silver Red Purple
Autumn Grey Silver Red Purple
Winter Red Purple
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Saxifragaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy
Genus

Heuchera are more or less evergreen, clump-forming perennials with attractive, rounded, shallowly palmately lobed leaves and racemes or panicles of small, tubular flowers, often with colourful calyces

Name status

Accepted

How to grow

Cultivation

Grow in a fertile, moist but well-drained, neutral soil in sun or partial shade. The woody rootstock tends to lift out of the ground so mulch annually or lift and replant

Propagation

Propagate by division in autumn

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Coastal
  • Patio and container plants
  • Rock garden
  • Underplanting of roses and shrubs
  • Flower borders and beds
Pruning

Remove faded flower spikes

Pests

Prone to vine weevils and leaf and bud eelworm

Diseases

May be affected by Heuchera rust

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