Alocasia Polly (African mask plant) care

Light

In the wild alocasia polly 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. Give 'Polly' plenty of bright, indirect light, ideally from an east- or west-facing window where it catches gentle morning or late-afternoon sun. The RHS classes it as a partial-shade plant under glass, so avoid harsh midday rays that scorch and bleach the dark foliage. Too little light dulls the silvery veining and stalls new leaves. 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

Aim for when the top 2-3 cm is dry, roughly every 5-7 days in summer and every 10-14 days in winter for alocasia polly, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water freely through spring and summer so the compost stays moist but never waterlogged, letting the top few centimetres dry before the next drink. Use tepid water and empty any drainage tray, as cold, standing water encourages root rot. Cut back sharply in winter when growth slows, keeping the mix barely moist.

Soil and pot

Alocasia Polly grows best in airy, peat-free aroid mix. Use a free-draining, peat-free houseplant compost lightened with perlite, plus a handful of orchid bark or coir for structure; the RHS recommends loam-based, moist but well-drained, acid-to-neutral soil. The chunky open texture lets the rhizome breathe and water flow through fast, which is the single best defence against the rot Alocasia are prone to. Always use a pot with drainage holes. 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 Polly sits happiest at around 60-80% humidity and 18-27°C (65-80°F). As a rainforest aroid, 'Polly' wants consistently high humidity of around 60% or more; below 40% the leaf edges crisp and brown and spider mites move in. Stand the pot on a tray of moist pebbles or run a humidifier nearby rather than relying on misting, which is short-lived. Bathrooms and kitchens with bright light suit it well. 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 polly sparingly. Feed every 2-3 weeks from spring to autumn with a balanced liquid houseplant fertiliser diluted to half strength, following the RHS general feeding guidance. Stop feeding entirely in winter while growth pauses. 'Polly' is sensitive to salt build-up, so flush the compost with plain water every couple of months to wash out excess fertiliser and prevent leaf-tip burn. 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 polly in the Growli community. Each is annotated with the most common cause so you know where to start.

• Yellowing leaves — Usually a watering problem: overwatering and soggy compost are the most common cause and the first warning of root rot. A single old outer leaf yellowing is normal; multiple leaves yellowing at once means check the roots and the moisture.
• Spider mites — The RHS notes 'Polly' is prone to glasshouse red spider mite, especially in dry air. Look for fine webbing and pale stippling on leaf undersides. Raise humidity, rinse both sides of the leaves and treat repeatedly with insecticidal soap or neem oil.
• Dormancy / sudden collapse — Falling light and temperature in autumn can trigger drooping and leaf drop. The rhizome is usually still alive, so reduce watering, keep it warm above 15°C and wait; fresh leaves often appear when conditions improve in spring.
• Crispy brown leaf edges — A sign of low humidity, dry air from radiators, or salt build-up from hard water or over-feeding. Boost humidity, water with rainwater or filtered water, and flush the compost periodically to leach out excess fertiliser.

Companion plants

Alocasia Polly pairs well with Calathea (Goeppertia), Maranta (prayer plant), Philodendron, and Ferns such as Nephrolepis. 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

Propagate by division in spring or early summer: unpot the plant, gently separate the offset clumps or rhizome sections, each with roots and ideally a growth point, and pot them into fresh airy mix. Keep the divisions warm, humid and lightly watered until established. It does not propagate reliably from leaf cuttings. 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 Polly is toxic to pets. The ASPCA lists Alocasia spp. as toxic to cats, dogs and horses. The plant contains insoluble calcium oxalate crystals throughout its tissues; when chewed, these needle-like crystals cause intense oral irritation, pain and swelling of the mouth, tongue and lips, drooling, vomiting and difficulty swallowing. The RHS likewise flags it as toxic if eaten and a skin irritant on contact. Keep it well out of reach of pets and children, and wear gloves when repotting or dividing. 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 Polly deep-dive guides

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

• Alocasia Polly watering schedule
• Alocasia Polly light requirements
• Best soil mix for alocasia polly
• Alocasia Polly fertilizing guide
• When to repot alocasia polly
• How to propagate alocasia polly
• Alocasia Polly growth rate & size
• Alocasia Polly cold hardiness
• Alocasia Polly temperature & humidity
• Is alocasia polly toxic to cats & dogs?

Related guides

Alocasia Polly is also known as African mask plant, Amazonian elephant's ear 'Polly', Polly alocasia, and Elephant's ear.

• Types of alocasia — varieties identified, with care and pet-safety
• Monstera care — light, water and common problems
• Pothos care — light, water and common problems
• Fiddle leaf fig care — light, water and common problems
• All 271 plant care guides in the Growli library