Sugar Apple Or Sweetsop

Sugar apple is most often grown from seed, since seedlings within a selection show little variability, though germination is slow; grafting by veneer, cleft, or shield-budding methods is used where earlier fruiting or true-to-type trees are wanted. Young plants are set out into their permanent sites once established.

Siting: the tree needs full sun and cannot develop properly in shade, and it tolerates a wide range of soils—including shallow, sandy, or limestone ground—provided drainage is good and pH sits between about 5.5 and 6.5; wind protection helps growth and reduces drying, and the tree is frost-tender, confined to frost-free climates. Very high-nitrogen "muck" soils push vigorous growth but reduce fruit yield and are best avoided where fruiting is the goal.

Watering: moderate soil moisture through the growing season suits the tree, along with relative humidity above 70 percent, especially while flowers are setting; prolonged drought is tolerated but causes leaf shedding, reduced fruit set, and smaller crops, while waterlogging for as little as seven to ten days can bring on root rot and plant death.

Sugar apple trees are sensitive to several environmental stresses more than to specific pests. Flooded or poorly drained soil produces leaf yellowing, stunted shoots, wilting and browning of foliage, leaf drop, stem dieback, and root rot that can kill the plant within one to two weeks. Cold exposure damages or kills unprotected young trees at temperatures of 30 to 32°F, while mature trees can be injured or killed once temperatures fall to 26 to 28°F. Saline soil or irrigation water causes marginal and tip necrosis on the leaves, and strong wind can distort the canopy, break limbs, scar developing fruit, and even topple trees, since the root system is shallow and comparatively weak.

Leaf drop is also worsened by disease pressure that builds when late-summer and fall rainfall is heavy, on top of the leaf loss driven by cool winter temperatures.

Fruit ripens roughly three to five months after flowering. It is picked by hand once the rind begins to shift from green toward a lighter, yellowish tone and the fruit's segments start to separate slightly, using a gentle twisting motion to avoid bruising the easily damaged flesh.

After picking, sugar apples are kept in a cool, dry place and are best used within a few days, since the fruit does not hold for long once harvested.

Culinary: the ripe pulp is eaten fresh out of hand, blended with milk into cold beverages, and used to flavor ice cream, sherbet, and jellies; the numerous dark seeds embedded in the flesh are spat out or removed rather than eaten, since they are considered poisonous.

Other traditional use: seeds, leaves, and roots of the plant have been described as poisonous, and ground seed has historically been used as an insecticide, though such use has not been approved by US or EU regulatory authorities.

Sugar apple is indigenous to tropical America, with its precise point of origin uncertain but generally placed in lowland Central America or the Caribbean. From there it spread through the Caribbean, Central America, and northeastern South America before Spanish traders carried it aboard Manila galleons to the Philippines. Portuguese traders are thought to have introduced it to southern India before 1590, and it had reached Indonesia by the early seventeenth century, after which cultivation extended to China, Australia, tropical Africa, Egypt, Mexico, the West Indies, Bermuda, and Florida; India and Brazil are noted as places where the fruit became especially abundant and popular in local markets.