These plants are cultivated as ornamental houseplants and rock or "succulent" garden plants. They are popular because of their ease of propagation, low water requirements, and wide variety of flower colors typically borne in clusters well above the vegetative growth. The section Bryophyllum - formerly an independent genus - contains species such as the "Air plant" Kalanchoe pinnata. In these plants, new individuals develop vegetatively as plantlets, also known as bulbils or gemmae, at indents along the leaves. These young plants eventually drop off and take root. No males have been found of one species of this genus which does flower and produce seeds, and it is commonly called, the Mother of Thousands. These plants are the food plant of the caterpillars of Red Pierrot butterfly. The butterfly lay its eggs on the leaf and after hatching the caterpillar go inside the leaf and eat the leaf from inside.
See also: Florist, Florists, Flower