Guava is a common tropical fruit cultivated in many tropical and subtropical regions. Psidium guajava (common guava, lemon guava) is a small tree in the myrtle family (Myrtaceae), native to Mexico, Central America, the Caribbean, and northern South America. Although related species may also be called guavas, they belong to other species or genera, such as the pineapple guava, Feijoa sellowiana. Botanically, guavas are berries. The most frequently eaten species, called "the guava," is the apple guava (Psidium guajava). Guavas are typical Myrtoideae, with tough dark leaves opposite, simple, elliptic to ovate, and 5–15 centimeters (2–6 in) long. The flowers are white, with five petals and numerous stamens. The fruits are many-seeded berries.

Fruits I

In botany, a fruit is a seed-bearing structure in flowering plants formed from the ovary after flowering.

Fruits are how flowering plants disseminate their seeds. Edible fruits, in particular, have long propagated using the movements of humans and animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; in fact, humans and many animals have become dependent on fruits as a source of food.