Starfruit

Starfruit is the common name for *Averrhoa carambola*, a small tropical tree in the oxalis family (Oxalidaceae) grown for its edible, ridged fruit.

Starfruit is the common name for *Averrhoa carambola*, a small tropical tree in the oxalis family (Oxalidaceae) grown for its edible, ridged fruit. The fruit is called starfruit because its cross-section forms a star shape when sliced. It is native to tropical Southeast Asia and is cultivated in warm regions around the world.

Taxonomy and naming

Starfruit is the common name for *Averrhoa carambola*, a member of the wood sorrel family, Oxalidaceae. It is also known as carambola and five-corner in some regions.

Description

The plant is a small evergreen tropical tree, usually described as slow-growing, with pink to lilac flowers and yellow to orange fruit. The fruit’s ridges produce its characteristic star shape when sliced.

Distribution and cultivation

The species is native to tropical Southeast Asia and is now cultivated across many tropical and subtropical areas worldwide. Sources note commercial or long-established cultivation in regions such as Brazil, the West Indies, Florida, Mexico, the Caribbean, and parts of Asia.

Uses and characteristics

Starfruit is eaten fresh and also used in cooking, juices, and preserves. Fruit flavour depends on cultivar and ripeness, and the fruit contains oxalic acid and calcium oxalate, which contribute to its tartness.