Soursop is the fruit of Annona muricata, a broadleaf, flowering, evergreen tree. The exact origin . It is also grown in parts of Southeast Asia and abundant on the Island of Mauritius. Usually the fruits are taken from the tree when they mature and left to ripen in a dark corner, whereafter they will be eaten when they are fully. Star-apple and soursop belong to the same family. Arguably the most controversial of Southeast Asian fruits, durian is something you hate or love, Another fruit with a spiny husk is jackfruit, the national fruit of Bangladesh. Guyabano fruit acknowledged as a miracle cure for cancer. the tropical climate and could be found in most countries in Southeast Asia. The fruits are harvested when they are mature, when the skin of the fruit is yellowish.