Averrhoa carambola

Carambola (Averrhoa carambola; also known as carambola) is a Oxalidaceae fruit plant grown for its fruit. The accepted scientific name is used as the canonical page title.

Averrhoa carambola fruit, flower, or plant habit. Wikimedia Commons file page.
Carambola (Averrhoa carambola)
Scientific name	Averrhoa carambola
Genus	Averrhoa
Family	Oxalidaceae
Order	Oxalidales
Growth and size	Small evergreen tree; 4–10 m
Climate and site	Moist, fertile, well-drained soil; humid tropics and warm subtropics
Propagation	Fresh seed 1–4 weeks; grafting for cultivars
Fruit and harvest	Several crops possible; ridged yellow fruit cut into stars

Identification and description

Carambola is a compact tree with winged, star-shaped fruit. It fruits young, responds to pruning, and performs best with steady moisture but free drainage.

The accepted genus, family, and order are Averrhoa, Oxalidaceae, and Oxalidales.

Growing

Carambola is a humid tropical Southeast Asian tree often grown on fertile lowland soils. It fruits with regular moisture and warmth, but drainage, wind protection, and micronutrient management matter on alkaline or compacted sites.

Moist, fertile, well-drained soil; humid tropics and warm subtropics. Provide airflow and avoid standing water unless the species is being grown in a deliberately wet habitat.

Soil

Moist, fertile, well-drained soil; humid tropics and warm subtropics; preserve native drainage and organic-matter conditions rather than treating all tropical fruit trees alike.

Sun and humidity

Most plants in this group prefer bright light; young trees may need shelter while roots establish. Humidity should be paired with airflow, not stagnant enclosure.

Seasonal changes

Flowering and harvest vary with local wet/dry or cool/warm cycles. Adjust irrigation to the species' native rhythm and protect warm-tropical plants during cool weather.

Propagation

Fresh seed 1–4 weeks; grafting for cultivars. Seedlings may vary in fruit quality and maturity; use grafting or other clonal methods when a named selection must be preserved.

Field view or fruit detail of Averrhoa carambola. Wikimedia Commons file page.

Flowering, fruiting, and harvest

Several crops possible; ridged yellow fruit cut into stars. Local climate, cultivar, rootstock, pollination, and rainfall can shift the calendar substantially.

Fruit and uses

The ripe fruit is eaten fresh and may be used in drinks, preserves, desserts, or regional savory preparations. Handle ripe fruit carefully because many tropical fruits soften rapidly after harvest.

Commentary

Growers are welcome to share observations on the talk page, including climate, provenance, propagation method, plant age, flowering, fruiting, and growing conditions.

Photos

The images above show documented fruit, flower, or plant-habit views. See the individual Commons file pages in the image credits for authorship and license details.

Sources

• Useful Tropical Plants: Averrhoa carambola

Image credits

• Carambola Starfruit.jpg — Wikimedia Commons file page; creator and license are recorded on the source page.
• Starfruit (Averrhoa carambola) on the tree.jpg — Wikimedia Commons file page; creator and license are recorded on the source page.