Guava is an exquisite, nutritionally valuable, and remunerative fruit crop of tropical and subtropical regions of the world. Guava cultivation became a commercial preposition in recent years, due to its high nutritive value and popular processed products. India is the world's largest producer of guava followed by China and Kenya. Guava is highly nutritious and a good source of calcium, iron, and phosphorus. The vitamin C content of guava fruit is 2–5 times that of citrus. The plant has many medicinal properties mainly due to its bioactive phytoconstituents. Guava is processed into a number of products like juice, jam, and jelly to extend its availability throughout the year.