|(Plant height:15 feet) Vigorous, hardy, tropical evergreen shrub or small tree that is usually grown as a houseplant on the mainland. Leaves have finely toothed edges and are ovate, glossy, dark green, up to 6 inches long. Large, showy, delicate blooms with five petals and distinctive long stamens reach up to 4 inches wide. Commonly grown as an annual. Requires a minimum temperature of 50 to 55 degrees F.