alum root 'Cassis'
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A clump-forming perennial to about 35cm high, forming a mound of lobed, dark purple leaves that look almost black. Loose sprays of small pink flowers appear above the foliage from spring into summer
Scientific classification
- Species
- alum root 'Cassis' (Heuchera 'Cassis')
- Genus
- Heuchera
- Family
- Saxifragaceae
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- Toxicity
- Herbaceous Perennial
- Plant type
- 0.1-0.5 metres
- Height
- 0.1-0.5 metres
- Spread
- Semi evergreen
- Foliage
- Clump forming
- Habit
- Spring · Summer · Autumn · Winter
- Season of interest
- Full sun · Partial shade
- Sunlight
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- Ideal temperature
alum root 'Cassis' pictures
Distribution of alum root 'Cassis'
Distribution map
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Culture
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Toxicity
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Quick identification of alum root 'Cassis'
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alum root 'Cassis' care guide
- Moderate regular watering, allowing brief slight drying between soakings
- Watering
- Full sun · Partial shade
- Sunlight
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- Ideal temperature
Watering
Moderate regular watering, allowing brief slight drying between soakings
Fertilizing
FertilizingBalanced perennial feed every four weeks from spring through summer
Pruning
PruningRemove faded flower spikes
Propagation
PropagationPropagate by division in autumn
Growing
GrowingGrow in a fertile, neutral soil in sun or light shade, and ensure good drainage, especially in heavy soils. The woody rootstock tends to lift out of the ground over time, so mulch annually to retain moisture. Divide and replant every 3-4 years to maintain vigour
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Common pests and diseases
Diseases
May be susceptible to heuchera rust and leafy gall
Pests
May be susceptible to leaf and bud eelworm and vine weevil
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