Alocasia (elephant ear) care

Light

Bright but filtered. Alocasia burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Bright indirect light. Direct sun scorches leaves; low light slows growth dramatically. 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 alocasia: when the top 2 cm of soil is dry, every 5-7 days. 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. Keep evenly moist during the growing season. Reduce watering sharply in winter dormancy.

Soil and pot

Alocasia grows best in chunky aroid mix. Standard potting compost with orchid bark and perlite. Drainage is critical — soggy soil causes corm 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 sits happiest at around 60-70% humidity and 18-27°C (65-80°F). High humidity is essential. A humidifier is the most reliable solution. 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 alocasia sparingly. Half-strength balanced feed every 4 weeks during the growing season only. 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 in the Growli community. Where a problem matches one of our diagnostic guides, click through for the full step-by-step recovery plan written for alocasia specifically.

• Sudden leaf drop in winter — Normal dormancy — the corm survives. Keep barely moist until spring.
• Yellow leaves — Overwatering, low light, or natural senescence of older leaves.
• Drooping leaves — Underwatering, low humidity, or cold draught.
• Brown crispy edges — Low humidity or salt build-up.
• Spider mites — Alocasias are mite magnets in dry air — check leaf undersides weekly.

Companion plants

Alocasia pairs well with Monstera, Bird of paradise, and Calathea. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Separate corms or offsets at repotting in spring; each offset needs its own root system. 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 is toxic to pets. ASPCA lists Alocasia as toxic to cats and dogs due to insoluble calcium oxalates. Chewing causes intense oral pain, drooling and swelling. 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 deep-dive guides

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

• Common alocasia problems & fixes
• Alocasia watering schedule
• Alocasia light requirements
• Best soil mix for alocasia
• Alocasia fertilizing guide
• When to repot alocasia
• How to propagate alocasia
• How to prune alocasia
• What's eating my alocasia?
• Alocasia growth rate & size
• Alocasia cold hardiness
• Alocasia temperature & humidity
• Is alocasia toxic to cats & dogs?
• Is alocasia toxic to cats?
• Is alocasia toxic to dogs?
• All 69 Alocasia varieties
• Pet-safe alternatives to alocasia

Featured in these plant shortlists

Alocasia qualifies for 3 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 humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Alocasia is also known as elephant ear, African mask, and giant taro.

• Alocasia yellow leaves — causes and the fix
• Alocasia curling leaves — causes and the fix
• Alocasia drooping — causes and the fix
• Alocasia brown spots — causes and the fix
• Alocasia mushy stem — causes and the fix
• Alocasia no new growth — causes and the fix
• Monstera vs Alocasia — which to choose
• Types of alocasia — varieties identified, with care and pet-safety
• Cutite care — light, water and common problems
• Araca-boi Sapote care — light, water and common problems
• Wild Star Apple care — light, water and common problems
• All 10153 plant care guides in the Growli library