Overview
Sempervivum arachnoideum 'Red Papaver' is a matforming, rosette-forming alpine rockery in the genus Sempervivum, part of the Crassulaceae family, with evergreen, fleshy, pointed leaves, green, grey, red foliage. Sempervivum arachnoideum 'Red Papaver' grows best in full sun, and tolerates loam and sand soils and any pH. Its UK hardiness is rated H5. Suggested uses include rock garden, scree bed, wall crevice, trough and alpine house.
About
Sempervivum arachnoideum, the cobweb house-leek, is a species of flowering plant in the family Crassulaceae, native to European mountains, in the Alps, Apennines and Carpathians. Growing to 8 cm (3 in) tall by 30 cm (12 in) wide, it is a rosette-forming succulent perennial, valued in cultivation for its ability to colonise hot, dry areas via offsets.
Growing conditions
Best soil and position for Sempervivum
- Sunlight
- Full sun
- Soil type
- Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, East-facing, West-facing, North-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
Sempervivum arachnoideum 'Red Papaver' size, habit and characteristics
- Plant type
- Alpine Rockery, Cactus Succulent
- Habit
- Matforming, Rosette-forming
- Foliage
- Evergreen, Fleshy, Pointed leaves, Green, Grey, Red
- Suggested uses
- Rock garden, Scree bed, Wall crevice, Trough, Alpine house
Care notes
Pruning and caring for Sempervivum arachnoideum 'Red Papaver'
- Propagation
- Offsets in spring
- Pest resistance
- Vine weevil, Sempervivum leaf miner, Slugs, Snails
- Disease resistance
- Rust
Frequently asked questions
Where is the best place to plant Sempervivum arachnoideum 'Red Papaver'?
Sempervivum arachnoideum 'Red Papaver' prefers full sun. It suits exposed and sheltered positions.
What soil does Sempervivum arachnoideum 'Red Papaver' need?
Sempervivum arachnoideum 'Red Papaver' grows best in loam and sand soil. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Sempervivum arachnoideum 'Red Papaver' hardy in the UK?
Sempervivum arachnoideum 'Red Papaver' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Sempervivum arachnoideum 'Red Papaver'?
Offsets in spring.
More in the Sempervivum genus
- Sempervivum 'Black'
- Sempervivum arachnoideum subsp. tomentosum 'Minor'
- Sempervivum borissovae
- Sempervivum calcareum 'Benz'
- Sempervivum marmoreum 'Brunneifolium'
- Sempervivum tectorum 'Red Flush'
- Sempervivum 'Bellotts Pourpre'
- Sempervivum 'Big Slipper'