The leaves of lettuce can be eaten.

Green shoots, also known as lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, lettuce, etc., for the family of Asteraceae, the stem and leaves of the herb lettuce. It is a variety of lettuce, divided into white lettuce, pointed leaf lettuce, leaf lettuce and other varieties. Lettuce varieties are more, according to the leaf shape is divided into pointed leaf class and round leaf class. The edible part of the leaves is 89%. For a long time, people eat lettuce always throw away the leaves, in fact, the leaves are more nutritious than the stem.

The harvesting period of lettuce, generally to the top of the plant and the highest leaf tip of the leaf level for the most suitable harvesting period, to harvest in time. If the harvest is too early, affecting the yield; too late harvest, easy to draw the flowering and hollow, affecting the quality. In the 20 days before harvest, prohibit the application of nitrogen fertilizer. Strict implementation of pesticide safety interval, after harvesting, remove the lower 2/3 of the leaves, flatten the shoot head.

Tips for picking lettuce:

If the lettuce is not fresh, its surface is definitely a bit wrinkled, not shiny, and even damaged, this lettuce do not buy. Fresh lettuce, its surface is relatively smooth, with a glossy, not a little damage, this is a good lettuce.

Lettuce comes with a special flavor, this flavor makes people smell very comfortable, then we can buy lettuce close to the smell, preferably at the bottom of the cut surface smell, if you smell the flavor of strong, that lettuce is very good, cooking is good, if it smells nothing, or smells strange, that lettuce don't buy, to buy home more than likely will be tasteless, or eat up! The first thing you need to do is to get a good deal on your own.

The above content refers to? Baidu Encyclopedia - Asparagus