Answer: Although calla lilies will die back when allowed to dry out, they should not smell. The odor would indicate some type of rotting, possibly a bacterial infection and/or related to poor drainage. Ideally the plants would be long lived and you would be able to keep them from year to year. If it happens again, you might want to take a sample to your county extension and see if they can identify the specific cause and then suggest steps to avoid it.
Q&A Library Searching Tips