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Plant care

Alocasia Reversa (reverse alocasia) care

Alocasia reversa

Also called reverse alocasia, Western Australian alocasia.

RHS H1bUSDA 11-12Toxic to petsIndoor Usually 20-35 cm tall and wide indoors

Watering rhythm

6-9days

When the top 5 cm of soil is dry, roughly every 6-9 days in growth

Light

Bright indirect light (just back from a sunny window)

Soil

Airy, mineral-rich aroid mix

Humidity

50-80%

Temp

16-27°C

Pet safety

Toxic to pets

Mature size

Usually 20-35 cm tall and wide indoors

Care at a glance

Light

Alocasia Reversa 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. Prefers medium to bright indirect light; an east or west window where the leaves are shielded from direct rays suits it well. Its leaves are sensitive and burn in direct sun, while deep shade dulls the silvery contrast and slows growth. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water alocasia reversa when the top 5 cm of soil is dry, roughly every 6-9 days in growth. 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. Keep the mix lightly moist but water only once the top few centimetres have dried; overwatering quickly causes root issues. Use tepid water, ensure free drainage, and empty the saucer. Reduce watering in winter as growth slows.

Soil and pot

Alocasia Reversa grows best in airy, mineral-rich aroid mix. As a limestone species it favours a chunky, fast-draining blend of orchid bark, perlite, and pumice with some coco coir, and tolerates added crushed limestone or dolomite. Avoid dense, peaty soil that holds water against the small rhizome and causes rot. 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

Alocasia Reversa sits happiest at around 50-80% humidity and 16-27°C (60-80°F). A high-humidity jewel alocasia that holds its silvery sheen best at 50-80%. Dry air browns the leaf edges and stalls new growth. A humidifier, terrarium, or enclosed cabinet with gentle airflow gives the most consistent results. If you keep the room above 16 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 alocasia reversa sparingly. Feed lightly every 4 weeks in spring and summer with a balanced liquid fertiliser at roughly half strength; this slow grower is easily burned by excess salts. Flush the substrate occasionally. Stop feeding in autumn and winter while it rests. 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 alocasia reversa in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Root rot from overwateringThe small rhizome rots fast in soggy or dense soil. Use a very airy, mineral-rich mix, water only when the top few centimetres dry, and ensure sharp drainage.
  • Browning leaf edgesLow humidity is the usual cause, sometimes with salt buildup. Raise humidity toward 50-80% and flush the substrate periodically.
  • Stalled growthThis slow species sulks in cold, dim, or fluctuating conditions. Provide stable warmth, bright indirect light, and steady high humidity to keep it pushing new leaves.
  • Spider mitesDry air invites mites, leaving stippling and fine webbing on the small leaves. Inspect undersides, rinse foliage, maintain humidity, and treat with insecticidal soap or neem.

Propagation

Propagate by division of the rhizome and offsets in spring or early summer once a clump is established. Separate pups that carry their own roots, pot into a snug, airy mineral mix, and keep warm and very humid while they root. Slow to multiply, so divide only mature plants. 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

Alocasia Reversa is toxic to pets. The ASPCA lists Alocasia as toxic to cats, dogs, and horses. The toxic principle is insoluble calcium oxalate crystals; chewing the leaves or stems releases needle-like raphides causing oral irritation, intense burning and swelling of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing. Keep away from pets and children. 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.

Alocasia Reversa care — frequently asked questions

What is the common name for Alocasia reversa?

Alocasia reversa is most commonly called Alocasia Reversa, but it is also known as reverse alocasia, Western Australian alocasia. The names refer to the same species, so care instructions for Alocasia Reversa apply identically to anything sold as reverse alocasia.

How much light does alocasia reversa need?

Alocasia Reversa grows best in bright indirect light (just back from a sunny window). Prefers medium to bright indirect light; an east or west window where the leaves are shielded from direct rays suits it well. Its leaves are sensitive and burn in direct sun, while deep shade dulls the silvery contrast and slows growth.

How often should I water alocasia reversa?

Water alocasia reversa when the top 5 cm of soil is dry, roughly every 6-9 days in growth. Keep the mix lightly moist but water only once the top few centimetres have dried; overwatering quickly causes root issues. Use tepid water, ensure free drainage, and empty the saucer. Reduce watering in winter as growth slows. 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 alocasia reversa toxic to cats and dogs?

Alocasia Reversa is toxic to pets. The ASPCA lists Alocasia as toxic to cats, dogs, and horses. The toxic principle is insoluble calcium oxalate crystals; chewing the leaves or stems releases needle-like raphides causing oral irritation, intense burning and swelling of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing. Keep away from pets and children.

What USDA hardiness zone does alocasia reversa grow in?

Alocasia Reversa is rated for USDA zone 11-12 (indoor or greenhouse plant in the US) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Alocasia Reversa deep-dive guides

Every aspect of alocasia reversa care, each with its own calibrated guide:

Featured in these plant shortlists

Alocasia Reversa 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

Alocasia Reversa is also commonly called reverse alocasia or Western Australian alocasia.