The white hibiscus is native to Kauai. This is a shrub or small tree 15 to 20 feet in length and can reach up to 30 feet in diameter. The leaves are oval with a smooth upper surface and smooth or slightly toothed edges. The leaves are 4 to 6 inches long and often have red veins and stems. The single white flowers are pinwheel shaped, up to 4 inches across, and borne at the ends of the branches. The staminal column is pink to red (except in subspecies immaculatus which has a white column). The flowers may be slightly pink or may age to pale pink, and are slightly fragrant. In cultivation, Hibiscus arnottianus blooms almost continuously.