The Best Plants for Terracotta Pots: A Complete Guide Try this for more bulbs If your elephant ear (Colocasia esculenta) bulbs have been growing for a year or more in your garden, they may be big enough to divide. Watch Growing Lilies High Country Gardens Propogating Dumbcane Dieffenbachia in water Miracle Gro Potting Soil Mix 50 qt. For Container Plants, Flowers, Vegetables, Shrubs, Feeds up to 6 Months 72790430