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Cactus SucculentAlpine Rockery

Sempervivum 'Grey Owl'

An evergreen perennial forming mats of greyish-green, fleshy leaf rosettes that may be flushed pink at the base. Pink flowers in loose clusters appear on top of stout stems arising from mature rosettes in summer

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver Pink
Summer Pink Green Grey Silver Pink
Autumn Green Grey Silver Pink
Winter Green Grey Silver Pink
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Drought resistance
Yes
Hardiness
H5
Botanical 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

Unresolved

How to grow

Cultivation

Grow in moderately fertile, very well-drained soil in full sun. Protect from excessive winter wet. Suitable for rock garden, scree bed, wall crevice, trough or alpine house

Propagation

Propagate by rooting offsets in spring

Suggested planting locations and garden types
  • Gravel garden
  • Patio and container plants
  • Rock garden
  • Low Maintenance
Pruning

Rosettes die after flowering and should be carefully removed

Pests

May be susceptible to vine weevil

Diseases

May be susceptible to a rust

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.