Jovibarba calcarea, Houseleek, Hen and Chicks

sempervivum calcareum

Also known as: ["Jovibarba calcarea","Houseleek","Hen and Chicks"]

Family: Crassulaceae Genus: Sempervivum Category: Succulents & Cacti

Overview

A hardy succulent forming rosettes of fleshy leaves, often with reddish or purple tints, native to rocky, calcareous areas in Europe.

Benefits & Perks

["drought tolerant","shade tolerant","rare/collector’s item"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Saxifragales
Family: Crassulaceae
Genus: Sempervivum
Botanical Name: Sempervivum calcareum

Plant Characteristics

Basic Information
  • Category: Succulents & Cacti
  • Suitable Location: rock gardens, alpine troughs, or containers with excellent drainage
  • Suitable For:
    Beginners Busy People (low Maintenance) Outdoor Landscapers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"0–35°C"}
  • Hardiness: {"zones":"5–9"}
  • Misting: rarely required, only if ambient humidity is very low
  • Drainage: Fast-draining.
  • Soil Type: Well-draining, gritty soil like cactus mix with added perlite or sand.
Maintenance Level
  • Maintenance Level: very low
  • Toughness Level: very high
  • Pruning Frequency: As needed, typically every few months or when dead leaves are present.
  • Pruning Intensity: Light pruning.
Care Details

Ideal Sunlight Coverage:
Bright indirect light to full sun (4–6 hours/day). Adjust to avoid scorching in intense summer sun.

Sunlight Tolerance Tips:
Acclimate gradually to intense light; protect from harsh midday sun; place indoors near a south-facing window or outdoors in dappled shade.

Warning Signs: Wilting despite moist soil, root rot, or prolonged leaf discoloration indicate poor soil or drainage conditions.

Care Requirements

Care Difficulty
very easy

easy

Sunlight

full sun to partial shade

Rotate plant for even growth; provide shade during peak summer; avoid direct sun in winter.

Watering

every 7–10 days in summer, every 3–4 weeks in winter

Water deeply but infrequently; avoid waterlogged soil; ensure excellent drainage.

Soil

well-draining, gritty soil with added sand or perlite

pH: Slightly acidic to neutral (6.0–7.0).

Ensure soil dries quickly; avoid peat-heavy mixes; use terra cotta pots for better drainage.

Temperature

Prefers cool to moderate temperatures (50–75°F or 10–24°C). Tolerates mild frost but thrives in cooler conditions.

Avoid sudden temperature swings; protect from frost; keep away from heat sources.

Fertilizing

every 2 months during active growth (spring and summer)

Dilute fertilizer to half strength; fertilize only when actively growing; skip winter feeding.

Propagation

Methods

Stem cuttings or offsets (pups).

Step-by-Step Propagation Guide
  1. Remove offset.
  2. Let cut end dry for a few days.
  3. Plant in dry soil.
  4. Water lightly after roots form.

Best Time: Spring or early summer when the plant is actively growing.

Environment

Warm, bright indirect light; moderate humidity; good air circulation.

Medium

Well-draining mix like cactus soil or perlite and sand.

Hormone

Not necessary but can speed up rooting.

Timeline

Roots develop in 2–4 weeks; establish in 1–2 months.

Tools Needed

Clean knife or scissors, small pot, well-draining soil.

Quick Tips

Allow cuttings to callous before planting; use a small pot to avoid overwatering.

Pruning & Repotting

Pruning Guide
Method

Gently pull off dead leaves or use clean scissors to trim.

Pruning Plan

Minimal pruning; focus on removing dead or damaged leaves to maintain shape.

Tools

Clean fingers or small, sharp scissors.

Checklist

Remove dead leaves; check for pests; maintain compact shape.

Repotting Guide
Best Season

Spring, before the growing season begins.

Pot Size

One size up (e.g., from 4-inch to 5-inch pot).

Method

Gently remove plant; trim roots if necessary; repot in fresh, well-draining soil with a slightly larger pot.

Suggestions

Repot every 2–3 years or when the plant outgrows its container.

Checklist

Use fresh soil; ensure drainage; handle roots gently; water lightly after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil dryness; water deeply; ensure drainage; reduce in winter.

How to Apply Water Properly

Water directly at the soil level, ensuring moisture reaches the root zone without wetting the leaves. Allow excess water to drain freely from the pot.

Pro Tip: Water early in the morning to allow foliage to dry before nightfall.
Watering Schedule Tips

Water sparingly, allowing soil to dry completely between waterings. Reduce frequency in winter to once every 4–6 weeks, depending on conditions.

Soil Improvement

Add perlite, coarse sand, or pumice to improve drainage; avoid heavy organic matter.

Temperature Stress Management
Signs of Temperature Issues

Wilting, leaf discoloration (yellowing or browning), stunted growth, or mushy leaves.

Cold Stress

Slows growth; may cause leaves to curl or discolor if exposed to prolonged freezing temperatures.

Solution: Protect from frost; move indoors during hard freezes; ensure good air circulation to prevent rot.

Hot Stress

Can lead to sunburn, dehydration, or root rot if overwatered in high heat.

Solution: Provide shade during peak heat; water deeply but infrequently; ensure excellent ventilation.

Fertilizing Guide
Fertilizing Checklist

Use balanced fertilizer; dilute properly; fertilize during growing season only.

Fertilizing Method

Use a balanced, diluted cactus fertilizer monthly during growing season (spring–summer); avoid fertilizing in winter.

Common Problems & Solutions

Yellow leaves in Sempervivum calcareum can indicate overwatering, nutrient deficiencies, or pest infestations. It may also be a natural part of the plant's life cycle as older leaves yellow and die off.

Wilting in Sempervivum calcareum is often due to underwatering or root rot caused by overwatering. It can also result from extreme temperatures or pest damage.

Leaf spots on Sempervivum calcareum are typically caused by fungal or bacterial infections, often due to excessive moisture or poor air circulation. These spots can lead to leaf necrosis and weaken the plant.

Rotting, particularly root or stem rot, is common in Sempervivum calcareum when the plant is overwatered or planted in poorly drained soil. This can lead to the plant's death if not addressed promptly.

Toxicity Warning

Cats
Non-toxic

Sempervivum calcareum is non-toxic to cats. No toxic effects are documented from ingestion or contact.

🌿 Toxic Parts:
entire plant
⚡ Toxic If:

if eaten

This plant is safe for cats, but as with any plant, monitor for any unusual behavior or sensitivity.
Dogs
Non-toxic

Sempervivum calcareum is non-toxic to dogs. No adverse effects are expected from ingestion or contact.

🌿 Toxic Parts:
entire plant
⚡ Toxic If:

if eaten

This plant is safe for dogs, but monitor for any unusual behavior or sensitivity.
Humans
Non-toxic

Sempervivum calcareum is generally considered non-toxic to humans. There are no significant toxic effects or physiological impacts reported from ingestion or contact.

🌿 Toxic Parts:
entire plant
⚡ Toxic If:

if eaten

While non-toxic, excessive consumption may cause mild gastrointestinal discomfort. Handle with care to avoid potential irritation.

Frequently Asked Questions

Q: How often should I water Sempervivum calcareum?

A: Water sparingly, allowing the soil to dry completely between waterings, especially during winter.

Q: Can Sempervivum calcareum be grown indoors?

A: Yes, but it requires bright light and good air circulation to thrive.

Q: Does Sempervivum calcareum attract wildlife?

A: It can attract bees and butterflies, making it a good choice for wildlife gardens.

Quick Reference
Family: Crassulaceae
Care: very easy
Light: full sun to partial shade
Water: every 7–10 days in summer, e
Suitable For: ["beginners","busy people (low maintenance)","outdoor landscapers","wildlife supporters (attracts bees, butterflies, birds)"]
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