Alum root

Heuchera sanguinea | Also known as: Coral flower, Coral bells | Rating: 0 votes | Print / Pdf

Heuchera sanguinea or allum root grows in a bushy clump with small round lobed leaves, green and marbled with silver. and lots of spikes of small funnel shaped flowers. It likes full sun or partial shade. It likes moist soil that's a neutral pH. The roots of the plant can tend to lift out of the ground, so either lift it each year and replant it, or mulch it. It doesn't need too much pruning, just remove the spikes of flowers when the blooms are finished. Vine weevils can be problem but it's usually not affected by disease.

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Plant
Known dangers?
  • no
Height [m]
  • 0.3
Spread [m]
  • 0.3
Dominant flower colour
  • Red
Flower Fragrance
  • No, neutral please
Flowering seasons
  • Early summer
  • Mid summer
  • Late summer
Foliage in spring
  • Green
Foliage in summer
  • Green
Foliage in Autumn
  • Green
Foliage in winter
  • Green
Propagation methods
  • seed
  • division
Growth habit
  • Clump-forming
  • Mat-forming
Environment
Acidity
  • Neutral
Hardiness zone
  • Z3-8
Heat zone
  • H8-1
Winter temperatures [°C]
  • -40 - -7
Heat days
  • 0 - 120
Moisture
  • well-drained but frequently watered
Soil type
  • sandy
  • loams
Sun requirements
  • Full sun
  • Partial shade
Exposure
  • Exposed
  • Sheltered
Usage
Standard category
  • Flowers & bulbs
  • Perennials
Grown for
  • Ornamental Foliage
Creative category
  • Kid Approved
  • For Beginners
  • For birds & bees
  • For every season
Garden type
  • Cottage garden
  • Containers
Garden spaces
  • Flower beds
  • Cut flowers
  • Underplanting
  • Ground cover
  • Borders
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years