Artocarpus altilis

Breadfruit (Artocarpus altilis)
Scientific name	Artocarpus altilis[1]
Common names	Breadfruit, breadfruit tree
Genus	Artocarpus
Family	Moraceae
Order	Rosales
Native range	Caroline and Mariana Islands in the current POWO backbone; widely introduced and cultivated elsewhere[1]
Growth form	Evergreen, wide-crowned tree; commonly 15 to 20 m and reported up to about 30 m[2][3]
Climate and site	Humid tropical; lowland sites preferred, with reported cultivation to about 1,550 m[2]
Soil	Deep, fertile, well-drained soil; regular moisture and no prolonged stagnant saturation[2]
Propagation	Fresh seed for seeded forms; root cuttings and other vegetative methods for seedless or selected plants[2]
Years to fruit	About 3 to 6 years in a reported suitable-crop setting; varies with cultivar, propagation, and climate[2]
Pollination and seed	Monoecious; fruit may be seeded or seedless depending on variety[3]
Fruit and harvest	Starchy syncarp harvested at several maturity stages; suitable trees may produce repeated crops[2][3]

Artocarpus altilis commonly called breadfruit, is an evergreen tropical tree cultivated for its starchy syncarp and for timber, shade, fuel, latex, and other traditional uses. Seeded and seedless forms occur, so propagation and fruit characteristics depend strongly on the plant's genetic background.[1][2]

Description

Breadfruit canopy and branches at Jardín de Aclimatación de la Orotava. Photo by Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons.

Breadfruit develops a broad crown and can become a large tree in the ground. The trunk may be straight and cylindrical or buttressed, and the bark is described as smooth. Leaves are alternate and highly variable, ranging from entire to deeply lobed; they may be large, glossy, and lighter or reddish-hairy beneath. The species is monoecious: male flowers are borne in club-shaped spikes, while female flowers are grouped into rounded inflorescences that develop into the syncarp.[2][3]

Fruit size, surface texture, flesh color, and seed presence vary among varieties. Feedipedia reports fruits about 10 to 30 cm in diameter and 0.25 to 6 kg, with yellow to green skin and starchy cream to yellow flesh. The commonly cultivated seedless forms should not be treated as interchangeable with seeded breadfruit or with breadnut, a related seeded taxon often discussed alongside it.[3]

Distribution and habitat

Plants of the World Online currently lists the Caroline and Mariana Islands as the native range of Artocarpus altilis and records introduction across much of the tropical world.[1] Horticultural references describe the crop in the wider Pacific and Southeast Asian context, where it has long been maintained in mixed agroforestry systems. This difference reflects the complex history of human movement and cultivation; it is not a reason to transfer range data from breadnut or other Artocarpus species without checking the name.[1][2]

Cultivation

Breadfruit is a warm, humid-tropical crop. Useful Tropical Plants gives best performance in lowland areas below about 650 m, with some success to about 1,550 m, a reported mean annual temperature range of about 21 to 32 °C, and injury possible below about 5 °C. These are compiled cultivation ranges rather than a universal hardiness threshold for every cultivar.[2]

Soil and water

Breadfruit grows in deep, fertile, well-drained soil with regular moisture. Reported rainfall preference is about 1,500 to 2,500 mm annually, exceptionally to 3,000 mm, with some tolerance of short dry periods. Build moisture retention through soil depth and organic matter, but keep excess water moving away from the root zone. Humid conditions do not justify prolonged stagnant saturation.[2]

Sun and humidity

Young plants benefit from some shade during establishment, then require increasing light as they mature. Give established trees bright exposure and protect them from strong, drying wind. Warm atmospheric humidity resembles the crop's usual environment, but airflow remains important in dense plantings and enclosed structures.[2]

Seasonal changes

Breadfruit can become partly deciduous where a distinct dry season occurs. In suitable tropical climates it may produce two crops per year, although flowering and harvest timing vary with rainfall, cultivar, and site. Reduce irrigation only in response to the plant's actual seasonal pattern; do not impose a cool-season dormancy on a tree that is actively growing, and protect it from cold events that approach the reported injury range.[2]

Propagation

Seed should be extracted from ripe fruit and sown promptly because it loses viability within weeks. Useful Tropical Plants reports best germination around 24 to 27 °C and about 85% germination at roughly two weeks under the cited conditions. Seedlings can be moved into individual containers soon after emergence and are reported as ready for field planting at about one year, provided they have developed adequately.[2]

Seed is not appropriate for preserving a seedless cultivar. Root cuttings are a documented vegetative method and are best collected around the dormant period before renewed growth. Air-layering and other clonal methods can preserve a selected tree, but the success of a particular method depends on material, season, and aftercare.[2]

Flowering, fruiting, and harvest

Breadfruit bears separate male and female flowers on the same tree. Fruit set and seed development vary among varieties, and seedless forms are especially dependent on clonal propagation. The reported crop interval of about 3 to 6 years should be read as a suitable-condition report, not as a guarantee for every seedling or named selection.[2][3]

Harvest stage determines the use. Immature fruit is used as a starchy vegetable; mature fruit may be cooked, roasted, fried, steamed, fermented, dried, or milled into flour. Ripe fruit can also be eaten fresh, although the food traditions and preferred stage differ by variety and region. Useful Tropical Plants reports repeated crops in suitable settings, but no single calendar applies across the species' wide cultivated range.[2][3]

Fruit and uses

Breadfruit is primarily a staple food crop. The flesh supplies starch and can be prepared in savory dishes, baked goods, preserves, and flour. Seeded forms also provide edible seeds that may be boiled or roasted. The tree has additional agroforestry value: its wood is used for light timber, its latex for adhesive and caulking, and its leaves and other parts have traditional household uses. Medicinal claims should be treated as ethnobotanical records rather than as evidence of clinical efficacy.[2][3]

Photos

References

• ↑ [1] Plants of the World Online: Artocarpus altilis (Parkinson) Fosberg, Royal Botanic Gardens, Kew. Accepted name and distribution backbone.

• ↑ [2] Useful Tropical Plants: Artocarpus altilis, Ken Fern and Ajna Fern, accessed 2026-08-24.

• ↑ [3] Feedipedia: Breadfruit (Artocarpus altilis), morphological description and food/agroforestry uses.

Image credits

• Summary fruit: Hans Hillewaert, CC BY-SA 3.0.
• Canopy: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0.
• Historical botanical plate: Francisco Manuel Blanco; digitally retouched by CarolSpears, public domain / Public Domain Mark 1.0.