Storing Caladium Bulbs (15 C.), dig up your caladium bulb with the foliage still attached. Don’t try to remove any of the dirt from the roots yet. Place your plants in a cool, dark area for 2 to 3 weeks. This process will cure the bulbs and cause them to go dormant.Click to see full answer. Likewise, people ask, can you leave caladium bulbs in the ground over winter? Overwintering Caladium Bulbs In The Ground If you’re lucky enough to live in a warm enough climate, you can just leave your caladium bulbs right in the ground all winter. They will eventually go dormant, and all the foliage will die back. But, once the soil warms in the spring, they’ll grow back better than ever.Furthermore, do Caladiums come back year after year? Grow caladiums (Caladium bicolor) for their showy leaves and a low, mounding growth habit. Caladiums will grow from their tubers every year in U.S. Department of Agriculture plant hardiness zones 9 through 12. In cooler climates, caladium may be kept as a houseplant or you can dig the tubers up and store them. Then, when should I dig up caladium bulbs? We usually dig caladiums sometime between late September and mid-October. I have observed that it is common for caladiums planted later in the season to last longer in the landscape. Use a shovel or a garden fork to lift the tubers, being careful not to damage them.Do caladiums multiply?Worry not, it is only the leaves not the bulb. Also, caladiums multiply as they grow, so one bulb may have now formed ten. (Hence, richer the soil, better the bulbs). The best thing to do is loosen up the soil from the sides and then dig for the bulbs with your hands.