Fruits are very good for our health - Guava - Guavas are plants in the myrtle family (Myrtaceae) genus Psidium, which contains about 100 species of tropical shrubs and small trees. Native to Mexico and Central America, northern South America, parts of the Caribbean and some parts of North Africa, parts of India, guavas are now cultivated and naturalized throughout the tropics, and are also grown in some subtropical regions. The most frequently-encountered species, and the one often simply referred to as 'the guava', is the Apple Guava (Psidium guajava). Guavas are typical Myrtoideae, with tough dark leaves that are opposite, simple, elliptic to ovate and 5-15 cm long. The flowers are white, with five petals and numerous stamens. The genera Accara and Feijoa (= Acca, Pineapple Guava) were formerly included in Psidium.