Kalanchoe plants are known for their tiny flowers and oval-shaped, scallop-edged leaves. There are more than 100 species in the genus, but the most popular kalanchoe houseplant is kalanchoe blossfeldiana, or window's thrill. It grows clusters of tiny flowers in red, pink, yellow, orange, and white. Kalanchoe is a popular houseplant because it's drought tolerant and easy to grow, needing water maybe every other week when kept in its ideal bright lighting. In tropical and subtropical climates, it can be grown outdoors as a perennial. In colder climates, it's typically grown as an indoor plant. With the right care, it can rebloom indoors for decades. Be careful keeping it with pets though, since the plant is toxic to cats and dogs when eaten