Common Houseleek (Sempervivum tectorum)

Common Houseleek

Sempervivum tectorum

A resilient rosette-forming succulent that thrives in rocky crevices, symbolizing eternal life. Other names: Hens and Chicks.

Requires full sun for optimal coloration and tight rosette formation.
0.5/week
Beginner
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Plant Needs

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Sunlight Requires full sun for optimal coloration and tight rosette formation.
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Watering Highly drought-tolerant; water only when the soil is completely dry.
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Temperature Extremely cold hardy and heat tolerant.
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Characteristics

  • Leaves: Fleshy, obovate to lanceolate, forming tight basal rosettes, green with purple or red tips, margins often ciliate;
  • Flowers: Star-shaped, pink to purplish-red, borne on thick, leafy, upright stems emerging from mature rosettes;
  • Roots: Fibrous, shallow root system, producing numerous offsets (stolons) to form dense mats.
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Care Guide

Watering

Water deeply but infrequently, allowing soil to dry out entirely between waterings

Fertilization

Apply a very dilute, low-nitrogen fertilizer once. Rarely needs fertilization; thrives in nutrient-poor soils.

Eggshell Powder:Crush rinsed and dried eggshells into a fine powder and sprinkle on the soil surface to provide calcium and improve drainage; avoid over-application.
Pruning
  • Remove dead or dried basal leaves gently with tweezers to prevent fungal rot;
  • Cut back dead flower stalks at the base after blooming, as the flowering rosette will naturally die (monocarpic);
  • Separate and replant offsets (chicks) if the cluster becomes too crowded.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Non-toxic to cats per ASPCA.

Humans: Non-toxic to humans.

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Garden Uses & Culture

Culture: Historically planted on roofs in Europe to ward off lightning and fire, associated with Jupiter and Thor.

Usage: Rock gardens, green roofs, container gardening, ground cover, and alpine troughs.