It is an evergreen succulent shrub in tropical climates and semi-deciduous to deciduous in colder climates, is also dependent on the subspecies or cultivar. Growing to 1–3 m in height, with pachycaul stems and a stout, swollen basal caudex. The leaves are spirally arranged, clustered toward the tips of the shoots, simple entire, leathery in texture, 5–15 cm long and 1–8 cm broad. The flowers are tubular, 2–5 cm long, with the outer portion 4–6 cm diameter with five petals, resembling those of other related genera such as Plumeria and Nerium. The flowers tend to red and pink, often with a whitish blush outward of the throat.