Alocasia Care: Watering, Humidity & Bouncing Back from Dormancy
Alocasia spp.
Alocasias have some of the most architectural leaves you can grow indoors. They're notorious for dropping leaves and going dormant — but they almost always come back from the corm.
Watering
Water when the top inch of soil is dry. They want consistent moisture but quickly rot when soggy. Always use a draining pot.
Light
Bright indirect light. Direct afternoon sun burns the leaves; low light makes them leggy and pale.
Humidity
60%+ humidity. A humidifier dramatically reduces leaf loss and crispy edges.
Soil
Chunky aroid mix: bark + perlite + a little potting soil. Their corms rot in dense, wet soil.
Dormancy
Alocasias sometimes drop every leaf, especially in winter or after a move. The corm under the soil stays alive — keep soil barely moist, give it warmth and light, and new leaves usually push within 6–8 weeks.
Toxic to pets and humans (calcium oxalate). The sap can burn skin.
Frequently asked questions
Why is my alocasia losing all its leaves?
Stress (move, repot, cold, overwatering) or seasonal dormancy. The corm under the soil is usually still alive — keep soil barely moist and wait for new growth.
How often should I water alocasia?
Roughly weekly when the top inch of soil is dry. Less in winter, especially if dormant.
Why are my alocasia leaves yellowing?
Overwatering, low humidity, or natural shedding as new leaves come in. Check soil and roots first.
Is alocasia toxic to cats and dogs?
Yes — high in calcium oxalate. Keep well out of reach.
Why are tiny spots/holes appearing on my alocasia leaves?
Often spider mites — check the undersides for fine webbing. Treat with a thorough rinse and insecticidal soap or neem.
Track your Alocasia in PlantbookOS
Adaptive reminders learn your plant's actual dry-down rate in your home — not a generic schedule. Log waterings by voice, snap photos to track growth, and ask FloraAI when something looks off.