Cobweb Houseleek 'Cebenese' (Sempervivum arachnoideum 'Cebenese')

Cobweb Houseleek 'Cebenese'

Sempervivum arachnoideum 'Cebenese'

Cobwebby rosettes hold delicate frost-like texture. Mat-forming succulent; common name: Cobweb Houseleek 'Cebenese'.

Full sun
1–2/week
Beginner
🌱

Plant Needs

☀️
Sunlight Full sun to partial sun; tolerates intense direct sunlight in cool climates; avoid prolonged shade to prevent leggy growth
💧
Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot and rosette decay
🌡️
Temperature Hardy to subzero temperatures; withstands heat up to 30°C with proper drainage; avoid extreme temperature fluctuations
🔍

Characteristics

  • Leaf: Tight rosettes of fleshy, pointed green leaves draped in fine white cobweb-like trichomes
  • Flower: Star-shaped pink to red blooms on upright 10–15 cm stems
  • Stem: Short, creeping stolons produce offset rosettes (chicks)
🛠️

Care Guide

Watering

Water when top 2–3 cm of soil is dry; reduce watering during extreme summer heatwaves

Fertilization

Diluted balanced succulent feed once every 2 months. Use low-nitrogen feed to prevent leggy, weak growth; avoid fertilizing dormant plants in winter

Eggshell powder topdress:Crush dried, rinsed eggshells to fine powder; sprinkle lightly on soil surface, avoiding direct contact with rosettes to prevent moisture buildup
Pruning
  • Remove dead outer leaves to maintain rosette health and improve airflow
  • Trim spent flower stems after blooming to redirect energy to new offset rosettes
  • Thin overcrowded mats to reduce competition for light and prevent fungal growth
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported toxic reactions

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

📖

Garden Uses & Culture

Culture: Symbolizes endurance and resilience in European folk traditions; often planted on roofs for protection

Usage: Ornamental rock garden plant, container succulent, green roof groundcover