Alocasia Elephant Ear Care: Light, Water, and Dormancy

Alocasia — elephant ear — is the plant that makes a room look tropical. It is also the plant most often killed by kindness: too much water, too little light.

Light

Bright, indirect light. A metre back from a south- or east-facing window is ideal. Direct midday sun scorches the leaves; deep shade stops new growth and causes the plant to drop older leaves one by one.

If new leaves emerge smaller than the last, the plant wants more light.

Watering

Alocasia comes from monsoon forests — it wants consistent moisture, not a wet sump. Water when the top 3–5 cm of soil feels dry. Then water thoroughly and let it drain completely.

Never leave the pot standing in water. Alocasia tubers rot quickly, and by the time you see yellow leaves the rot is usually advanced.

Humidity

Aim for 60% or higher. Central heating drops indoor humidity to 30% or less, which causes crisp brown leaf edges. A pebble tray, a humidifier, or grouping plants together all help. Misting is largely ineffective.

Soil and pot

Use a chunky, airy mix: two parts potting compost, one part perlite, one part orchid bark. The pot should be only slightly larger than the root ball — Alocasia prefer to be snug and sulk in oversized pots.

Fertiliser

Feed every two to four weeks during active growth with a balanced liquid fertiliser at half strength. Stop entirely once growth halts in autumn.

Dormancy — do not panic

In winter, most Alocasia drop all their leaves and the plant appears to die. It has not. The tuber is resting.

• Reduce watering drastically — just enough to stop the tuber shrivelling.
• Keep the pot at 15°C or above.
• Do not throw it away. Do not repot it.
• New growth usually appears in spring.

Common problems

• Yellow lower leaves: normal ageing if it is one leaf at a time; overwatering if several at once.
• Crisp brown edges: low humidity or inconsistent watering.
• Drooping stems: cold draught or root problems.
• Spider mites: common in dry indoor air — raise humidity and wipe leaf undersides.

Toxicity note

Alocasia contains calcium oxalate crystals and is toxic to cats, dogs, and humans if chewed. Keep it out of reach of pets and small children.

Find Alocasia bulbs and other tropical varieties in our shop.