Sedum ternatum
Iceland moss
A compact, evergreen succulent, to around 15cm high, with a creeping habit, branching stems and flat, broadly oval to rounded, fleshy green leaves arranged in whorls of 3 around the stems. Leaves sometimes flush red in strong light. Flowering shoots produced in summer are upright, to 20cm high, and tipped with clusters of small, starry white flowers
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Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Red | |||
|---|---|---|---|---|
| Summer | White | Green Red | ||
| Autumn | Green Red | |||
| Winter | Green Red |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H6Botanical details
- Family
- Crassulaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Matforming
- Genus
Sedum may be annuals or herbaceous or evergreen perennials with succulent stems and leaves and clusters of small, star-shaped flowers in summer or autumn
- Name status
Correct
- Plant range
- Canada & USA
How to grow
Cultivation
Grow in a sheltered position in moderately fertile, well-drained, alkaline to neutral soil in full sun. See hardy cacti and succulent cultivation for further advice
Propagation
Propagate by softwood cuttings of non-flowering shoots in early summer
Suggested planting locations and garden types
- Patio and container plants
- Rock garden
- Low Maintenance
- Banks and slopes
Pruning
No pruning required
Pests
May be susceptible to slugs, snails, vine weevil grubs, scale insects and mealybugs
Diseases
May be susceptible to fungal and bacterial crown and root rots, especially in damp conditions and poor drainage
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