Acerola is an evergreen shrub or small tree with spreading branches on a short trunk. It is usually 2–3 m (6.6–9.8 ft) tall, but sometimes reaches 6 m (20 ft) in height.
After 3 years trees produce significant numbers of bright red drupes 1–3 cm (0.39–1.2 in) in diameter with a mass of 3–5 g (0.11–0.18 oz). Drupes are in pairs or groups of three, and each contains three triangular seeds. The drupes are juicy and very high in vitamin C and other nutrients. They are divided into three obscure lobes and are usually acid to subacid, giving them a sour taste, but may be sweet if grown well.