Caladiums can be treated as annual plants and left in the garden at the end of the season to be killed by cold. However, it is possible to save caladium tubers for planting again the following year. Spread them out in an area protected from rain and cold, and allow them to dry for a week. Cut or pull the dry foliage from the tubers and remove all dry soil. Caladiums Tuber Rot Tubers may decay when in storage or during the growing season.
Several organisms cause tuber rot.
Bacteria cause a soft rot and slimy decay, while fungi cause a dry and chalky rot. Select disease-free tubers for planting. Store tubers properly to avoid high humidities and cool temperatures. Never store caladium tubers in the refrigerator. Tubers purchased in early spring, before ideal planting time, should be held at room temperature.