A watermelon (Citrullus lanatus) is a plant originally domesticated in Africa. It is a highly cultivated edible fruit worldwide, having more than 1000 varieties. About 6% of a watermelon is sugar, which makes it very sweet. There are many different types of watermelon. Some have a green rind on the outside and a red-pink flesh on the inside, with brown seeds. Some can have yellow flesh, and some can be seedless. The green rind on the outside is not usually eaten, though it can be used as a vegetable. It can also be stewed or pickled. Most watermelons are oblong or spherical. In Japan, watermelons are grown in different shapes, such as hearts and squares.
|Watermelon cross section|
|Watermelon output in 2005|
|Wikispecies has information on: Citrullus lanatus.|