It is most often grown as a leaf vegetable. In many countries, it is typically eaten cold, raw, in salads, sandwiches, hamburgers, tacos, and in many other dishes
The lettuce plant has a short stem initially (a rosette growth habit), but when it gradually blooms, the stem and branches lengthens; and produces many flower heads that look like those of dandelions, but smaller. This is referred to as bolting. When grown to eat, lettuce is harvested before it bolts. Lettuce is used as a food plant by the larvae of some Lepidoptera.
Lettuce is a low calorie food and is a source of vitamin A
and folic acid.
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