Sempervivum calcareum, commonly called the houseleek or 'hens-and-chicks', is an evergreen alpine succulent that grows as a low, ground-hugging rosette of fleshy blue-green leaves, each leaf neatly tipped with a sharp reddish-brown to purple point. Native to the European Alps, it spreads by sending out short offsets ('chicks') around the parent rosette ('hen'), quickly forming dense mats.
It is a monocarpic perennial: an individual rosette flowers once after a few years, sending up a tall stalk of star-shaped pinkish flowers, then dies — but the surrounding offsets carry the colony on. In India it is best suited to cool hill regions and to bright terraces and balconies in the plains during the milder months, where it thrives as an extremely drought-tolerant, low-maintenance succulent.
Prized for its symmetry, colour contrast and toughness, it is a favourite for rock gardens, trough plantings, shallow dish gardens and green-roof style containers.
Specifications
| Family |
Crassulaceae |
| Native region |
European Alps (introduced/cultivated worldwide) |
| Mature height |
8-10 cm (rosette); flower stalk up to 25 cm |
| Mature spread |
Individual rosette 4-8 cm; colony spreads 15-30 cm via offsets |
| Growth rate |
Slow to moderate |
| Foliage |
Evergreen; fleshy blue-green leaves with reddish-purple pointed tips |
| Flower colour |
Pale pink to dull rose |
| Flower season |
Summer (rosette flowers once, then dies) |
| Climate zone |
Temperate/alpine; tropical only with shade and excellent drainage |
Care guide
| Sunlight |
Full sun to bright light; 4-6 hours of direct sun. In hot Indian plains give morning sun with afternoon shade to avoid scorch. |
| Watering |
Low. Water only when soil is fully dry (soak-and-dry). Reduce sharply in monsoon and winter. Overwatering causes rot. |
| Soil / mix |
Very free-draining gritty mix; cactus/succulent mix amended with coarse sand, perlite or pumice. Avoid heavy, water-retentive soil. |
| Temperature |
Thrives in 10-25 C; very cold-hardy. Struggles above 32-35 C; needs shade and airflow in Indian summer heat. |
| Humidity |
Prefers low humidity and good air circulation; high humidity and stagnant air promote rot and fungal issues. |
| Fertilizer |
Minimal. A dilute (quarter-strength) balanced or low-nitrogen succulent feed once in spring is plenty; over-feeding spoils form. |
| Pruning |
Remove dead/dried outer leaves and spent flower stalks. Lift and replant offsets to refresh crowded clumps. |
| Repotting |
Every 2-3 years or when the pot fills with offsets; use a shallow wide pot with drainage holes. Best done in spring. |
| Propagation |
Very easy from offsets ('chicks') — detach a rooted or unrooted offset and press into gritty mix; also by seed. |
| Pests & problems |
Generally trouble-free; watch for aphids on flower stalks, mealybugs, vine weevil and rot from overwatering or poor drainage. |
| Toxicity / safety |
Non-toxic to humans, cats and dogs; considered safe and pet-friendly. |
| Difficulty |
Easy |
Uses
<p>A versatile ornamental succulent for low-water Indian gardens and homes:</p><ul><li>Rock gardens, gravel gardens and dry-stone walls in hill stations and cooler regions.</li><li>Shallow dish gardens, troughs and succulent bowls for terraces, balconies and windowsills.</li><li>Living-wall, green-roof and vertical planters where a tough, ground-hugging mat is wanted.</li><li>Pet-safe, child-friendly indoor or patio decor near bright light.</li><li>Easy gifting and propagation plant for beginners, thanks to its free offsets.</li></ul>
Growing tips
<p><strong>Summer (Mar-Jun):</strong> In the plains, shift pots to a spot with morning sun and afternoon shade; ensure airflow and let soil dry fully between waterings to prevent heat-and-water rot.</p><p><strong>Monsoon (Jul-Sep):</strong> The most dangerous season — move pots under cover, stop routine watering, and make sure drainage holes are clear so rosettes never sit in wet soil.</p><p><strong>Winter (Oct-Feb):</strong> The ideal growing window across most of India; give maximum bright light, water sparingly, and divide or replant offsets now. In hill stations it tolerates cold and light frost well.</p>
