Alocasia
Alocasia spp.

Alocasia

Bright indirectFussyToxic to pets
6582°FComfort range
HighHumidity
Background

Alocasias — elephant ears, jewel alocasias, the dramatic Polly and zebrina — are grown for their bold, sculptural, often metallic or deeply veined leaves. They're spectacular and unapologetically demanding: they want warmth, high humidity, bright indirect light, and a watering touch that keeps them lightly moist but never cold and soggy.

They're also prone to a sulk that alarms new owners: dropping leaves or going fully dormant, especially as the days shorten. Often the corm is still alive underground, so keep it lightly moist, warm, and patient and it usually returns. Spider mites adore them in dry indoor air, so inspect the leaf undersides regularly. Not a beginner plant, but a thrilling one.

Bright indirect light; some morning sun is fine. Too little light brings weak, droopy growth.

Care at a glance
LightBright indirect
WaterEvery 4–7 days; keep lightly moist, never soggy
Soil mixVery chunky, airy aroid mix — bark, perlite, and coir
HumidityHigh
Temperature65–82°F
DifficultyFussy
HabitUpright
Mature size1–4 ft depending on species
PropagationDivision of the corms (offsets)
Watering & safety
How to water

Water when the top inch dries; it rots in cold, wet soil

Drought tolerance

Low — keep to a consistent rhythm and don't let it dry out hard.

Toxicity

Contains insoluble calcium oxalates — significant mouth and throat irritation if chewed. Keep from pets and children.

The routine

Keep lightly moist; water when the top inch dries

every 4–7 days

Wipe leaves and keep humidity high; check undersides for mites

Feed with a balanced fertiliser

every 2–3 weeksGrowing season

Leaf drop or dormancy is often recoverable — keep the corm warm and barely moist

Divide offsets and refresh soil

every 1–2 years
Watch for
Spider MitesMealybugsThrips