Lettuce is a nutritious leafy vegetable and most widely cultivated as a salad crop in temperate countries. Although it is a major fresh vegetable with wide range of applications from salad to medicinal products. Since the concept of green products has been prevailing worldwide, lettuce have gained importance not only for food application but in various formations having other specific uses. Its leaves are commonly found in salad mixtures and sandwiches. Fruit of lettuce is dry capsule filled with one seed. It is most often grown as leaf vegetable, but sometimes for its stem and seed. Plants grown for consumption are rarely allowed to grow to mature. In some eastern countries like China and Egypt, stems instead of leaves of lettuce are consumes, either cooked, raw, pickled, dried, or as a sauce. It is a lutien rich vegetable. Lettuce is a rich source of vitamin A and also a good source of folate and iron. The lettuce plant can vary greatly in size, shape and leaf type but generally, the leaves of the plant form a dense head or loose rosette.