Caladiums do very well in our zone – 8b, and can thrive in more tropical areas as well. Originally from tropical regions in South America, in colder climates they must be dug up every year to protect the corms from the freezing weather. In zones 8 and higher, however, they can remain in the ground throughout the winter. They will lose their foliage in the fall and stay dormant until they pop up in the Spring.
Most varieties of Caladiums don’t just tolerate shade, they prefer it! Typically, they will thrive with 2-4 hours of sunlight. Some varieties can take more sun than others, but most will have larger, more vibrant leaves when grown in the shade, rather than the sun. Good drainage and evenly moist soil is necessary to grow healthy Caladiums. Little fertilizer is required to keep them happy. Mulching around plants is a good way to keep the soil moist and slowly provide nutrients.