Growli

Plant care

Adromischus Marianiae (marianiae adromischus) care

Adromischus marianiae

Also called marianiae adromischus, wrinkled adromischus.

RHS H2USDA 9b-11Mildly toxic to petsIndoor Typically 5-8 cm (2-3 in) tall and 5-10 cm (2-4 in) wide

Watering rhythm

2-3weeks

When the soil is fully dry, roughly every 2-3 weeks in growth

Light

Bright indirect light (just back from a sunny window)

Soil

Extra-gritty mineral mix

Humidity

30-50%

Temp

18-27°C

Pet safety

Mildly toxic to pets

Mature size

Typically 5-8 cm (2-3 in) tall and 5-10 cm (2-4 in) wide

Care at a glance

Light

In the wild adromischus marianiae grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Needs strong light, including a few hours of direct sun, to develop its intense leaf colour and textured surface and to stay compact. Low light produces pale, elongated, weak growth. Acclimate carefully to fierce summer sun, as the dense leaves can scorch if moved abruptly. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Adromischus Marianiae watering is mostly about restraint. When the soil is fully dry, roughly every 2-3 weeks in growth — and never on a schedule. The finger test (or the pot-lift test) catches the actual moisture state; a calendar assumes weather and light don't change. Water sparingly and only once the mix has dried out completely; this species is exceptionally rot-prone. Firm leaves indicate it's well watered. In winter it rests, so water just enough to keep the leaves from deeply shrivelling and no more.

Soil and pot

Adromischus Marianiae grows best in extra-gritty mineral mix. Plant in a very lean, fast-draining medium, ideally majority pumice, lava grit or perlite with only a little cactus compost. Its fine roots rot fast in moisture-holding soil. A small shallow terracotta pot dries quickly and suits its slow, tight habit. 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

Adromischus Marianiae sits happiest at around 30-50% humidity and 18-27°C (65-80°F). Happiest in dry household air; high humidity invites rot and fungal problems. No misting or humidity trays. Good airflow around the plant is important, especially given its dense, slow growth. If you keep the room above 18 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 adromischus marianiae sparingly. Feed only sparingly, perhaps once during the active growing season, with a heavily diluted cactus fertiliser. This very slow grower needs little, and overfeeding bloats the leaves and encourages rot. No feeding during dormancy. 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 adromischus marianiae in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Rot from excess moistureIts fine roots and dense leaves rot quickly if soil stays damp. Use a mostly-mineral mix, water only when bone dry, and ensure rapid drainage and airflow.
  • Etiolation in low lightWeak light causes the normally tight rosette to stretch and pale. Provide the brightest possible spot with some direct sun to keep growth compact and colourful.
  • Extremely slow recoveryBecause it grows so slowly, any setback or damaged leaf takes a long time to mask. Avoid disturbing roots and keep conditions stable rather than tinkering.
  • MealybugsCottony pests hide in leaf crevices and around the base. Inspect regularly and treat early with a cotton bud dipped in alcohol or a suitable insecticide.

Propagation

Propagate from leaf cuttings: detach a plump leaf cleanly, let it callus for several days to a week, then rest it on lean, barely-moist gritty mix and be patient, as rooting is slow. Stem cuttings of branching forms also work. Spring is the best time. 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

Adromischus Marianiae is mildly toxic to pets. Adromischus marianiae is not individually listed by the ASPCA, and its family Crassulaceae includes toxic genera (Kalanchoe, Crassula) alongside benign ones, so it cannot be declared pet-safe. Treat with caution, keep away from curious pets, and seek veterinary advice if ingestion occurs; watch for drooling or gastrointestinal upset. 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.

Adromischus Marianiae care — frequently asked questions

What is the common name for Adromischus marianiae?

Adromischus marianiae is most commonly called Adromischus Marianiae, but it is also known as marianiae adromischus, wrinkled adromischus. The names refer to the same species, so care instructions for Adromischus Marianiae apply identically to anything sold as marianiae adromischus.

How much light does adromischus marianiae need?

Adromischus Marianiae grows best in bright indirect light (just back from a sunny window). Needs strong light, including a few hours of direct sun, to develop its intense leaf colour and textured surface and to stay compact. Low light produces pale, elongated, weak growth. Acclimate carefully to fierce summer sun, as the dense leaves can scorch if moved abruptly.

How often should I water adromischus marianiae?

Water adromischus marianiae when the soil is fully dry, roughly every 2-3 weeks in growth. Water sparingly and only once the mix has dried out completely; this species is exceptionally rot-prone. Firm leaves indicate it's well watered. In winter it rests, so water just enough to keep the leaves from deeply shrivelling and no more. 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 adromischus marianiae toxic to cats and dogs?

Adromischus Marianiae is mildly toxic to pets. Adromischus marianiae is not individually listed by the ASPCA, and its family Crassulaceae includes toxic genera (Kalanchoe, Crassula) alongside benign ones, so it cannot be declared pet-safe. Treat with caution, keep away from curious pets, and seek veterinary advice if ingestion occurs; watch for drooling or gastrointestinal upset.

What USDA hardiness zone does adromischus marianiae grow in?

Adromischus Marianiae is rated for USDA zone 9b-11 (indoor in most US/UK homes) and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Adromischus Marianiae deep-dive guides

Every aspect of adromischus marianiae care, each with its own calibrated guide:

Featured in these plant shortlists

Adromischus Marianiae qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Adromischus Marianiae is also commonly called marianiae adromischus or wrinkled adromischus.