Heuchera americana 'Marvelous Marble'
American alum root 'Marvelous Marble'
An evergreen perennial forming a mound of lobed, heart-shaped leaves opening dark purple in spring, becoming dark blue-green, with dark purple veining and a silvery sheen, in summer. Spires of tiny, cream, bell-shaped flowers on wiry, upright stems appear from late spring to early summer
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Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Cream | Purple | ||
|---|---|---|---|---|
| Summer | Green Purple Grey | |||
| Autumn | Green Purple Grey | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or ShelteredDrought resistance
Yes Hardiness
H6Botanical details
- Family
- Saxifragaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Clump forming
- 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 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
- Coastal
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
- Underplanting of roses and shrubs
Pruning
Remove faded flower spikes
Pests
May be susceptible to vine weevils and leaf and bud eelworm
Diseases
May be susceptible to heuchera rust
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