Hairy Houseleek (Cobweb Houseleek) care

Light

Hairy Houseleek needs sun on the leaves, not just bright ambient room light. Requires at least 6 hours of direct sun daily. Indoors, place on a south- or west-facing windowsill. Insufficient light causes etiolation and loose, floppy rosettes. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water hairy houseleek every 2–4 weeks in the growing season; once a month or less in winter. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Allow soil to dry completely between waterings. Water at the base — never overhead, as moisture trapped in the hairy rosette causes rot. Virtually drought-tolerant once established.

Soil and pot

Hairy Houseleek grows best in gritty, sharply draining succulent or alpine mix. Mix standard potting compost 1:1 with coarse grit or perlite. Good drainage is non-negotiable; terracotta pots help wick excess moisture. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Hairy Houseleek sits happiest at around 10–40% humidity and -20°C to 30°C (-4°F to 86°F). Prefers low humidity, typical of alpine environments. High indoor humidity promotes crown rot. No misting required or recommended. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed hairy houseleek sparingly. Feed once in spring with a half-strength balanced fertiliser (10-10-10). No further feeding required; excess nitrogen causes soft, rot-prone growth. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on hairy houseleek in the Growli community. Each is annotated with the most common cause so you know where to start.

• Crown rot — The most common issue, caused by overwatering or water pooling inside the hairy rosette. Ensure the soil dries fully between waterings and always water at soil level.
• Etiolation (stretching) — Rosettes become loose and elongated when light is insufficient. Move to the sunniest available position or supplement with a grow light for at least 6 hours daily.
• Mealybugs — White waxy insects can hide within the dense hairs of the rosette. Remove manually with a cotton swab dipped in isopropyl alcohol, or apply a dilute neem-oil drench to the soil.

Propagation

Separate offsets (chicks) from the mother rosette once they have developed their own roots, and pot into gritty compost. Monocarpic rosettes die after flowering — remove spent rosettes and allow offsets to fill the gap. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Hairy Houseleek is pet-safe. Sempervivum is listed by the ASPCA as non-toxic to cats and dogs. The genus contains no known toxic principles; ingestion may cause mild gastrointestinal upset at most. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Hairy Houseleek deep-dive guides

Every aspect of hairy houseleek care, each with its own calibrated guide:

• Hairy Houseleek watering schedule
• Hairy Houseleek light requirements
• Best soil mix for hairy houseleek
• Hairy Houseleek fertilizing guide
• When to repot hairy houseleek
• How to propagate hairy houseleek
• Hairy Houseleek growth rate & size
• Hairy Houseleek cold hardiness
• Hairy Houseleek temperature & humidity
• Is hairy houseleek toxic to cats & dogs?
• Is hairy houseleek toxic to cats?
• Is hairy houseleek toxic to dogs?

Featured in these plant shortlists

Hairy Houseleek qualifies for 11 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• Best succulents for beginners — The easiest succulents and cacti to keep alive — selected by documented growth habit, each with the light and watering it actually wants.
• Best pet-safe succulents — Succulents the ASPCA lists as non-toxic to cats and dogs — low-water greenery that is also safe around a curious pet.
• Best small & tabletop houseplants — Compact houseplants that stay under about 40 cm — desk, shelf and windowsill plants that never outgrow a small space.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Best small pet-safe plants — Compact, tabletop houseplants that are also ASPCA non-toxic to cats and dogs — safe greenery for a desk or shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Hairy Houseleek is also commonly called Hairy Houseleek or Cobweb Houseleek.

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