Sempervivum arachnoideum Coconut Crystal ('Belsemmag1') (Colorockz Series)
cobweb houseleek [Coconut Crystal]
A mat-forming evergreen succulent, producing rosettes of fleshy, spoon-shaped leaves that are dark reddish brown tipped with pale lime green. Tall spikes of starry pink flowers are produced from mature rosettes in summer; these die off after flowering and are replaced by new offsets
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Size
Ultimate height
Up to 10cmTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Red Green | |||
|---|---|---|---|---|
| Summer | Pink | Red Green | ||
| Autumn | Red Green | |||
| Winter | Red Green |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or ShelteredDrought resistance
Yes Hardiness
H5Botanical details
- Family
- Crassulaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Matforming
- Genus
Sempervivum are evergreen perennials forming mats of fleshy-leaved rosettes, often attractively coloured, with star-shaped pink or pale yellow flowers in summer
- Name status
Trade
How to grow
Cultivation
Grow in poor to moderately fertile, sharply drained soil in full sun. In pots use a 50:50 mix of peat-free, loam-based potting compost and grit. Protect from excessive winter wet. See hardy cacti and succulent cultivation
Propagation
Propagate by removal of offsets in spring and early summer
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Gravel garden
- Houseplants
- Patio and container plants
- Rock garden
- Conservatory and greenhouse
Pruning
No pruning required
Pests
May be susceptible to vine weevil larvae
Diseases
May be susceptible to rust diseases
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