Alocasia: winter dormancy mistaken for death — what does it look like?

Leaves yellow and die off one by one from fall onward until the pot is empty. No smell, no mush. Reduce water to almost nothing, keep warm, wait for spring. Do not toss it and do not keep it wet.

Alocasia: corm rot — what does it look like?

Sour smell from the pot, corm soft and brown rather than firm when dug up. Caused by watering a dormant plant on the old schedule. A firm corm can be cleaned and repotted; a soft one cannot.

Alocasia: spider mites — what does it look like?

Fine stippling on the leaf surface, faint webbing at leaf joints, leaves going dull and dry. Alocasia is unusually prone. Heavy infestations strip a plant fast.

Field Guide/Alocasia

What went wrong

Alocasia

Alocasia spp.

Dies every winter. Frequently comes back. Rarely believed.

Alocasia is the plant most often thrown away while entirely alive. It genuinely goes dormant: in shorter days and cooler temperatures it will drop every leaf in succession until nothing remains above the soil, which looks exactly like death and is not.

Underground, the corm persists. Kept barely moist and warm through winter, a bare pot of apparently dead soil will push out new leaves in spring. The plants that are actually lost are the ones whose owners either threw them out or, more often, kept watering an empty pot until the corm rotted.

Usually one of these

3 Likely Causes

Ranked by how often it is actually this.

01
Winter dormancy mistaken for death
Extremely common — usually not a death
What you saw
Leaves yellow and die off one by one from fall onward until the pot is empty. No smell, no mush.
What it means
Reduce water to almost nothing, keep warm, wait for spring. Do not toss it and do not keep it wet.
02
Corm rot
The real killer, usually during dormancy
What you saw
Sour smell from the pot, corm soft and brown rather than firm when dug up.
What it means
Caused by watering a dormant plant on the old schedule. A firm corm can be cleaned and repotted; a soft one cannot.
03
Spider mites
Common in dry heated rooms
What you saw
Fine stippling on the leaf surface, faint webbing at leaf joints, leaves going dull and dry.
What it means
Alocasia is unusually prone. Heavy infestations strip a plant fast.

The question you actually have

Dead or dormant?

This is the single most important check in the field guide. Tip the pot out and find the corm — the firm bulb-like structure at the base. Firm means alive and dormant, however empty the pot looks. Soft, brown and foul-smelling means dead. Do not judge an alocasia by its foliage between November and March.

If it did not make it