If you enjoy tropical appeal, these gardens are also easy to create. Many common garden plants have tropical origins or characteristics such as: Geraniums Impatiens Begonias Elephant ears Cannas Caladiums Houseplants like dieffenbachia, palms, pothos, and croton can also be included. Geraniums, Impatiens, Begonias, Cannas, Caladiums, Elephant Ears, Dieffenbachia & Palms.