Caladium Look Alike . A perennial in usda plant hardiness zones 10 to 12, velvet plant (gynura aurantiaca) grows as an indoor plant in colder regions. Caladiums are tropical foliage plants that come in an array of bright, variegated colors. Potted Garden A closer look from gardenfootprint.blogspot.com With ovate leaves, mottled with the shades of white or yellow, it is quite a ‘ handsome ‘ plant to have in your room! Philodendron plants are tropical flowering plants in the family araceae.many of the 480 species of philodendron plants are popular houseplants thanks to their large, green leaves. All references to this plant being either an alocasia or a xanthosoma do not take into.