How do I over-winter caladiums indoors?
Carefully dig up the caladiums when the foliage begins to yellow with the onset of cool weather or wait until after the first frost. After digging, place the plants in a cool, dry location for 1 to 2 weeks to cure. After curing, cut off the dry foliage. Place a layer of peat moss, vermiculite, or sawdust in a small cardboard box. Lay the tubers on the storage medium, then cover with additional peat, vermiculite, or sawdust. Store the caladiums in a cool (60 to 65 degree Fahrenheit), dry location.