The industry has since expanded markets to Europe and Japan. Florida, the world leader in grapefruit production, now produces almost two million metric tons of grapefruit annually. Distribution Grapefruit are grown throughout tropical and subtropical regions, particularly in the Western Hemisphere. The top five grapefruit-producing countries in order of importance are the United States, Isreal, Cuba, Argentina, and South Africa. The United States is the undisputed leader in commercial grapefruit production, accounting for about 63 percent of the world supply, the vast majority of which is grown in Florida.
Trees are erect as seedlings, globose and slightly spreading as budded or grafted plants.
Branches are strong and usually do not require pruning except for dead wood removal, tree shaping, and size control. The broad leaf blade is pointed at the apex and rounded at the base with a rather broadly-winged petiole overlapping the leaf base. Short spines are found in many leaf axils. The leaves are evergreen, usually persisting as much as two years. Such fruit develop into seedless or few-seeded fruit.