Calla Lily Rotting

Question

my calla lily rots to mush at base of stems of leaves and flowers – why its not in soggy compost

Answer 1

Does it get plenty of sun? If it's in more than 25 percent shade it may not be drying out fast enough. Well-draining soil is essential for Calla lilies.

I find Calla lilies to be somewhat temperamental. They do like evenly moist soil, but wait till they dry out a bit before watering again. There's a fine line between "moist" and "saturated."