Marang

The Marang is indigenous to the tropical lowland rainforests of Southeast Asia, with its natural range centered on the island of Borneo.

• Native to Borneo (including Sabah, Sarawak, Brunei, and Kalimantan), Palawan (Philippines), and parts of the Sulu Archipelago
• Thrives in the humid equatorial climate of the Sundaland biodiversity hotspot
• The genus Artocarpus comprises approximately 50 species, most of which are native to Southeast Asia and the Pacific
• Marang has been cultivated for centuries by indigenous communities in Borneo, particularly the Kadazan-Dusun and Iban peoples
• Unlike its commercially widespread relatives (jackfruit and breadfruit), Marang has seen very limited commercial cultivation outside its native range due to the fruit's perishability
• Attempts at introduction to other tropical regions (Queensland, Hawaii, West Africa) have met with limited success

Artocarpus odoratissimus is a medium to large evergreen tree reaching 20 to 25 meters in height in its natural habitat.

Tree & Trunk:
• Evergreen tree, typically 15–25 m tall with a straight bole and dense, rounded crown
• Bark is grayish-brown, smooth to slightly flaking when young, becoming rougher with age
• All parts of the tree produce a sticky white latex when cut — a characteristic feature of the Moraceae family
• Buttress roots may develop in mature specimens growing in forest conditions

Leaves:
• Simple, alternate, large and broadly elliptic to obovate
• Approximately 20–50 cm long and 10–25 cm wide
• Dark green and glossy on the upper surface; paler and slightly pubescent beneath
• Entire (non-lobed) in mature trees, distinguishing it from the often lobed juvenile leaves of jackfruit
• Prominent pinnate venation with 8–12 pairs of lateral veins

Flowers:
• Monoecious — bearing separate male and female inflorescences on the same tree
• Male inflorescences are elongated, club-shaped spikes (~8–15 cm long), yellowish-green
• Female inflorescences are shorter, globular heads that develop into the compound fruit
• Pollination is primarily by insects, particularly small flies and beetles attracted to the scent

Fruit:
• Compound syncarp (multiple fruit formed from an entire inflorescence), roughly spherical to oblong
• Typically 15–20 cm in diameter and weighing 1–2 kg, occasionally larger
• Outer surface covered with soft, broad, conical spines (~5–8 mm long) — less sharp than jackfruit spines
• Skin transitions from green to yellowish-green or brownish as it ripens
• Exudes a strong, sweet, distinctive aroma when ripe — often compared to a blend of jackfruit and durian but milder
• Interior contains numerous large, white to cream-colored arils (flesh segments) surrounding flattened seeds
• Each aril is approximately 3–5 cm long, soft, juicy, and custard-like in texture
• Flavor is sweet, rich, and complex — frequently described as superior to jackfruit

Seeds:
• Flattened, roughly oval, approximately 2–3 cm long
• Enclosed within the edible aril
• Seeds are starchy and can be boiled or roasted for consumption, similar to chestnuts

The Marang is an understorey to mid-canopy tree of lowland tropical rainforests, adapted to warm, humid equatorial conditions.

• Found naturally in primary and secondary lowland tropical rainforests, typically below 1,000 m elevation
• Prefers deep, well-drained, fertile soils rich in organic matter — commonly found along riverbanks and in alluvial forests
• Requires consistently high rainfall (2,000–4,000 mm annually) and high atmospheric humidity
• Intolerant of frost and prolonged drought; thrives in USDA hardiness zones 11–12
• Plays an ecological role as a food source for various frugivorous animals, including primates, civets, and fruit bats, which aid in seed dispersal
• The tree's dense canopy provides habitat and shelter for epiphytes, insects, and small vertebrates
• Latex production serves as a defense mechanism against herbivory

Marang is primarily grown in home gardens and small orchards within its native range. Commercial cultivation remains limited due to the fruit's extreme perishability.

Climate:
• Strictly tropical; requires year-round warm temperatures (22–32°C)
• Cannot tolerate temperatures below 5°C; frost is lethal
• Requires high humidity (>70%) and abundant rainfall or irrigation

Light:
• Young trees benefit from partial shade; mature trees prefer full sun
• In forest settings, it tolerates partial shade as an understorey tree

Soil:
• Deep, well-drained, fertile loamy soils with high organic matter content
• Prefers slightly acidic to neutral pH (5.5–7.0)
• Does not tolerate waterlogged or saline conditions

Watering:
• Requires consistent moisture throughout the year
• Drought stress causes leaf drop and fruit abortion
• Mulching around the base helps retain soil moisture

Propagation:
• Primarily by seed — seeds lose viability rapidly and should be planted within days of extraction from the fruit
• Germination occurs within 1–3 weeks under warm, moist conditions
• Vegetative propagation by grafting and air-layering is possible and preferred for maintaining desirable cultivars
• Trees grown from seed typically begin fruiting in 5–8 years; grafted trees may fruit in 3–4 years

Common Challenges:
• Fruit flies (Bactrocera spp.) are significant pests
• Fruit rot fungi can affect overripe fruits on the tree
• The sticky latex can be a nuisance during harvesting and handling