This tree can grow to 45 feet tall with age, but generally it is much smaller. In cultivation, it generally grows to about 15 feet in height, but it can grow up to 25 feet tall and 12 feet wide. It has dark gray, grooved bark. The shiny or waxy green leaves vary in shape from long and narrow to elliptic and can be anywhere from 1 1/2 to 8 inches in length. Myoporum sandwicense blooms year round. The 1/4 inch bell-shaped flowers are fragrant. They are arranged close to the stems and range in color from white to pink.