breadfruit tree

Overview

Artocarpus altilis, commonly known as the breadfruit tree, is a species of flowering tree in the mulberry and jackfruit family (Moraceae) native to the Pacific Islands. The tree has been cultivated for millennia across Oceania and was later introduced to tropical regions worldwide, particularly the Caribbean during Captain Bligh's famous voyages. The breadfruit tree is an important staple crop, with its starchy fruit serving as a carbohydrate-rich food source that can be prepared in numerous ways. Breadfruit trees are large, fast-growing evergreen or semi-deciduous trees that can reach heights of 15-26 meters. They are characterized by their broad, spreading canopy and large, deeply lobed leaves. The tree produces latex sap when cut, a characteristic shared with other members of the Moraceae family. Modern cultivars include both seeded and seedless varieties, with seedless forms being more commonly cultivated for their fruit. The fruit itself is a syncarp, a composite fruit formed from the fusion of many small flowers. When mature, breadfruits are typically round to oval, 10-30 cm in diameter, with a bumpy or spiny exterior that turns from green to yellowish-green or brown. The flesh is creamy-white to yellow and has a starchy texture similar to potato when cooked. Beyond its nutritional value, the tree provides timber, medicine, and other materials to communities throughout the tropics. Breadfruit trees are highly productive, with a single tree capable of producing 200 or more fruits per year. They thrive in humid tropical lowlands and have become naturalized in many regions outside their native range. The tree's ability to grow rapidly and produce abundant nutritious fruit has made it a focus of food security initiatives in tropical developing nations.

How to identify

Breadfruit trees are large, spreading trees reaching 15-26 meters in height with a thick trunk and milky latex sap. The leaves are large (20-90 cm long), thick, leathery, and deeply pinnately lobed with 5-11 lobes, dark green and glossy above, paler and slightly hairy beneath. The fruit is distinctive: a large, round to oblong syncarp 10-30 cm in diameter with a green to yellowish-green bumpy or reticulated skin covered with polygonal markings. Male flower spikes are elongated and yellow, while female flowers form dense, rounded heads. The bark is gray-brown and relatively smooth, becoming slightly fissured with age.

Habitat

Breadfruit trees thrive in humid tropical lowlands with consistent rainfall and warm temperatures. They prefer well-drained, deep volcanic or alluvial soils and grow best at elevations from sea level to 650 meters, though they can occasionally be found up to 1550 meters. The trees require full sun exposure and do not tolerate frost or prolonged drought. They are commonly planted in home gardens, agroforestry systems, and coastal areas throughout the tropics.

Distribution

Native to the Pacific Islands, particularly New Guinea, the Bismarck Archipelago, and western Micronesia. Through centuries of Polynesian and Melanesian seafaring, breadfruit was spread throughout Oceania including Hawaii, Samoa, Tahiti, and other Pacific islands. It has been introduced and naturalized in tropical regions worldwide, including the Caribbean, Central and South America, Southeast Asia, South Asia, West Africa, and parts of East Africa. Major cultivation areas now include the Pacific Islands, Caribbean nations, parts of tropical Asia, and equatorial Africa.

Diet

Breadfruit trees require deep, well-drained, fertile soils rich in organic matter with pH ranging from 6.0 to 7.5. They need full sun exposure for optimal growth and fruit production. The trees require consistent moisture, particularly during fruit development, with annual rainfall ideally between 2000-3000 mm, though they can tolerate brief dry periods once established. They benefit from nitrogen-rich soils and respond well to organic mulching. Protection from strong winds is important as branches can be brittle.

Behavior

Breadfruit trees are fast-growing, typically reaching fruit-bearing maturity in 3-5 years from planting. They exhibit strong apical dominance when young, developing a spreading, rounded crown with age. The trees produce root suckers that can be used for vegetative propagation. Growth is often seasonal in areas with distinct wet and dry periods, with leaf drop occurring during drier months in semi-deciduous varieties. The trees can live and produce for 50-70 years or more. They form symbiotic relationships with mycorrhizal fungi that enhance nutrient uptake.

Reproduction & life cycle

Breadfruit trees produce separate male and female flowers on the same tree (monoecious). Male flowers emerge first in elongated, club-shaped inflorescences, followed by female flower heads that develop into the fruit. Many cultivated varieties are seedless or nearly seedless, propagated vegetatively through root suckers, root cuttings, or air layering. Seeded varieties produce fruits containing numerous brown seeds. Flowering and fruiting can occur year-round in equatorial regions or seasonally in areas with distinct wet/dry periods. Trees may produce 2-3 crops per year with proper conditions. Cross-pollination occurs via wind and insects in seeded varieties.

When to look

Fruiting seasons vary by region and cultivar. In equatorial areas, trees may fruit year-round or have 2-3 distinct peaks. In seasonal tropical climates, main fruiting typically occurs during and after the rainy season. Trees often flower and fruit most heavily from May to September in the Pacific Islands and June to November in the Caribbean.

Cultural significance

Breadfruit holds immense cultural importance throughout the Pacific Islands, where it has been a staple food for over 3000 years and features prominently in mythology, oral traditions, and social customs. The fruit can be prepared in numerous ways: roasted, baked, boiled, fried, or fermented into preserved pastes. All parts of the tree have traditional uses: the wood for construction and canoes, the bark for cloth (tapa), the latex as glue and caulking, and various parts in traditional medicine for treating ailments from ear infections to skin conditions. The tree's introduction to the Caribbean by Captain Bligh in 1793 (after the famous Bounty mutiny) was intended to provide cheap food for enslaved people. Today, breadfruit is experiencing renewed interest as a sustainable, nutritious crop for food security and climate resilience.

Similar species

• Jackfruit (Artocarpus heterophyllus)
• Breadnut or chataigne (Artocarpus camansi)
• African breadfruit (Treculia africana)

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