Watermelons are edible tropical plants which require a temperature more than 25 deg C to survive; they grow from 5-50 Pounds. The fruit contains Vitamins, Potassium and beta Carotene. This fruit is sweet and is popular in summer season; usually consumed as fruit salad, juice or wine. The seeds are also consumed by drying and roasting it. The rinds of watermelon are used for making pickles and also as a vegetable. The fruit is 91% water and 6% sugar. The cultivation of watermelon was started in 7th century and by 10th century this had reached china. Today China is the world’s largest watermelon producing country.