How to Propagate Alocasia
The division method, step by step. Roots in 2–6 weeks for corms to sprout, ready for soil in 8–12 weeks to a leafed plant. Below are the steps that actually work plus the failure modes that get most propagations.
Step by step
Start with a corm (small brown bulb) or offset separated from the parent tuber.
- 1
During repotting, gently shake soil from the root ball to expose the central tuber and any attached corms.
- 2
Corms look like small brown bulbs (½ to 1 inch across). Twist them off by hand — they pop off cleanly when ready.
- 3
For larger offsets with their own leaves, use a sterile knife to cut through the rhizome connection.
- 4
Float corms in a shallow dish of room-temp water (papery brown skin facing up). Keep at 75°F+.
- 5
Within 2–6 weeks a green shoot and white roots emerge. Wait until roots reach 1–2 inches.
- 6
Pot in a well-draining aroid mix, keep warm and humid, and reduce watering to once dry on top.
Common failure modes
- Cold temperatures stall corm sprouting indefinitely — alocasia needs 70°F+ to break dormancy
- Submerging the whole corm rots it; only the bottom should touch water
- Removing corms while still hard and attached — only twist off corms that come loose easily
For full Alocasia care — light, water, humidity, pests — see the Alocasia care guide. Or browse all species guides.