Growli

Plant care

Twisted Aichryson (Twisted House Leek) care

Aichryson tortuosum

Also called Twisted Aichryson, Twisted House Leek.

RHS H2USDA 10-11Mildly toxic to petsIndoor 15–25 cm tall

Watering rhythm

2-3weeks

Every 2–3 weeks in spring and summer; monthly in winter

Light

Bright indirect light (just back from a sunny window)

Soil

Well-draining cactus or succulent mix

Humidity

25–45%

Temp

8–24°C

Pet safety

Mildly toxic to pets

Mature size

15–25 cm tall

Care at a glance

Light

Bright but filtered. Twisted Aichryson burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Grows best in bright indirect light with some gentle morning sun. A south- or east-facing windowsill is ideal. Avoid intense direct afternoon sun in summer, which can bleach or scorch the hairy leaves. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering twisted aichryson: every 2–3 weeks in spring and summer; monthly in winter. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water moderately in the growing season, allowing the top half of the soil to dry between waterings. Reduce significantly in winter when the plant semi-rests. Never leave standing in water — root rot develops quickly.

Soil and pot

Twisted Aichryson grows best in well-draining cactus or succulent mix. Use cactus compost mixed with 30–40% perlite or coarse grit. A small terracotta pot promotes healthy drying cycles. Repot every 2–3 years or when the plant becomes top-heavy. 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

Twisted Aichryson sits happiest at around 25–45% humidity and 8–24°C (46–75°F). Tolerates average indoor humidity well. High humidity combined with poor airflow can encourage fungal disease on the hairy leaf surfaces. A well-ventilated room is preferable to a damp bathroom. If you keep the room above 8–24°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 twisted aichryson sparingly. Feed monthly from March to August with a diluted half-strength balanced liquid fertiliser or dedicated cactus feed. Withhold fertiliser entirely from September through February to encourage a natural rest. 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 twisted aichryson in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Leggy, weak growthPlants stretch significantly in low light, losing their compact twisted form. Move to a brighter spot and prune back leggy stems in spring — cuttings root easily.
  • Root rotOverwatering or poor drainage causes rapid root rot. The hairy stems hold moisture so take extra care not to wet them when watering. Allow soil to partially dry between waterings.
  • Aphids on new growthSoft new stems and flower buds attract aphids in spring. Remove by hand or spray with a diluted insecticidal soap solution. Repeat after 7 days to catch hatching nymphs.

Propagation

Stem cuttings taken in spring or early summer root readily. Allow cut ends to callous for 24–48 hours, then insert into barely moist gritty compost. Rooting usually occurs within 3–4 weeks in a bright, warm position. 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

Twisted Aichryson is mildly toxic to pets. Aichryson is a Crassulaceae genus closely allied to Aeonium. It is not individually listed by ASPCA, but related jade-type Crassulaceae genera are considered toxic to dogs and cats. Treat as mildly toxic and keep away from pets as a precaution. 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.

Twisted Aichryson care — frequently asked questions

What is the common name for Aichryson tortuosum?

Aichryson tortuosum is most commonly called Twisted Aichryson, but it is also known as Twisted Aichryson, Twisted House Leek. The names refer to the same species, so care instructions for Twisted Aichryson apply identically to anything sold as Twisted House Leek.

How much light does twisted aichryson need?

Twisted Aichryson grows best in bright indirect light (just back from a sunny window). Grows best in bright indirect light with some gentle morning sun. A south- or east-facing windowsill is ideal. Avoid intense direct afternoon sun in summer, which can bleach or scorch the hairy leaves.

How often should I water twisted aichryson?

Water twisted aichryson every 2–3 weeks in spring and summer; monthly in winter. Water moderately in the growing season, allowing the top half of the soil to dry between waterings. Reduce significantly in winter when the plant semi-rests. Never leave standing in water — root rot develops quickly. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is twisted aichryson toxic to cats and dogs?

Twisted Aichryson is mildly toxic to pets. Aichryson is a Crassulaceae genus closely allied to Aeonium. It is not individually listed by ASPCA, but related jade-type Crassulaceae genera are considered toxic to dogs and cats. Treat as mildly toxic and keep away from pets as a precaution.

What USDA hardiness zone does twisted aichryson grow in?

Twisted Aichryson is rated for USDA zone 10-11 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Twisted Aichryson deep-dive guides

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

Featured in these plant shortlists

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

Related guides

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