Hairy Aichryson (Hairy House Leek) care

Light

Hairy Aichryson is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Requires bright indirect light for compact, well-formed growth. A south- or east-facing windowsill is ideal. The dense hair covering gives some tolerance to direct sun but avoid prolonged intense midday sun through glass, which causes bleaching. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water hairy aichryson every 2–3 weeks in spring and summer; once monthly 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. Water thoroughly then allow the compost to dry completely before the next watering. The dense hairy covering traps moisture, so avoid overhead watering. Always water at the base. Reduce almost completely from October to February.

Soil and pot

Hairy Aichryson grows best in very free-draining cactus/succulent mix. Use cactus compost combined with 40–50% coarse perlite or horticultural grit. The hairy stems are especially susceptible to stem rot at soil level if compost stays moist; a grit surface mulch adds further protection. 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 Aichryson sits happiest at around 20–40% humidity and 8–23°C (46–73°F). Prefers lower ambient humidity than most houseplants. The dense pubescence (hair) on leaves and stems can trap moisture and promote mould or rot in humid conditions. Keep in a well-ventilated room. If you keep the room above 8–23°C 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 aichryson sparingly. Feed once in spring and once in early summer with a quarter- to half-strength balanced or cactus liquid fertiliser. Avoid feeding in autumn and winter. The species naturally grows in low-nutrient soils; over-fertilising produces weak, sappy 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 aichryson in the Growli community. Each is annotated with the most common cause so you know where to start.

• Stem base rot — The densely hairy stem surface wicks moisture toward the base, making stem rot at soil level a common issue. Use a grit surface mulch, water only at the base, and ensure the pot drains fully after watering.
• Mould on foliage in humid conditions — The dense pubescence traps humid air, creating conditions for botrytis or surface mould. Improve ventilation, reduce ambient humidity, and remove any affected leaves promptly to prevent spread.
• Leggy growth in low light — Insufficient light causes stems to stretch and the attractive compact, hairy character is lost. Provide the brightest indoor position available and prune leggy stems in spring; cuttings root readily.

Propagation

Take stem cuttings 4–6 cm long in spring or early summer. Strip lower leaves and allow cut ends to callous for at least 48 hours (the hairy surface slows moisture loss but also slows callous formation). Place on dry gritty compost and water lightly after 5–7 days. 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 Aichryson is mildly toxic to pets. Aichryson villosum belongs to Crassulaceae and is not individually listed by ASPCA. Several related jade-type Crassulaceae genera are noted as toxic to dogs and cats. As a precaution, treat this species as mildly toxic and keep away from pets. 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 Aichryson deep-dive guides

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

• Common hairy aichryson problems & fixes
• Hairy Aichryson watering schedule
• Hairy Aichryson light requirements
• Best soil mix for hairy aichryson
• Hairy Aichryson fertilizing guide
• When to repot hairy aichryson
• How to propagate hairy aichryson
• How to prune hairy aichryson
• What's eating my hairy aichryson?
• Hairy Aichryson growth rate & size
• Hairy Aichryson cold hardiness
• Hairy Aichryson temperature & humidity
• Is hairy aichryson toxic to cats & dogs?
• Is hairy aichryson toxic to cats?
• Is hairy aichryson toxic to dogs?
• All 9 Aichryson varieties

Featured in these plant shortlists

Hairy Aichryson qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• 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 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 a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Hairy Aichryson is also commonly called Hairy Aichryson or Hairy House Leek.

• Crested Euphorbia care — light, water and common problems
• Candelabra Euphorbia care — light, water and common problems
• Boea Hygroscopica care — light, water and common problems
• All 8452 plant care guides in the Growli library