Different plant types: Catharanthus roseus is a subshrub, and the plant type is relatively high, about 60 cm; long-lived plants are relatively low, small, and about 10-30 cm high. Different leaves: the leaves of Changchun flower are thin and smooth; the leaves of Florist Kalanchoe are fleshy, the upper part of the leaf edge has undulate blunt teeth, and the lower part is full. The flowers are different: Changchun flower has five petals; Florist Kalanchoe has four petals, with rich colors.