Lettuce is also called leaf lettuce, foie gras, lettuce, cabbage and so on. Lettuce is a compositae plant, but it does not belong to Cruciferae. Lettuce has a long history of cultivation in China, which is not only convenient for cultivation and management, but also can be eaten directly after picking, and the cultivation area is increasing.

Growth habit of lettuce

1. Lettuce likes a cool environment, neither too hot nor too cold. Under the medium growth condition 15-20, the growth period is 90- 100 days. Seeds are resistant to low temperature germination. The suitable temperature for germination is 18-22, and almost no germination occurs above 30. During the growth of plants, they like cold climate. It is most suitable for planting in 15-20, with high yield and good quality, which is higher than 25 for a long time. Poor growth, rough and bitter leaves, but strong cold resistance. Even short-term sub-zero temperature has little effect on growth.

Lettuce growing place

Lettuce is native to the Mediterranean coast of Europe and cultivated and domesticated in the wild. Vegetables have been introduced into China for a long time, and have been cultivated in the southeast coast, especially in the suburbs of big cities and vast areas, especially in Taiwan Province Province. Many varieties of lettuce like warm climate.

What does lettuce look like?

Raw lettuce leaves are scattered but not knotted, and the colors are green, white, red and purple. The fiber content of lettuce is higher than that of lettuce, which can be divided into green lettuce and purple lettuce according to leaf color. According to the growth state of leaves, it can be divided into two kinds: loose-leaf vegetables and bulbous vegetables. The leaves of the former are scattered, while those of the latter are spherical. After subdivision, there are two kinds of bulbous vegetables: one is creamy vegetables with oval leaves, smooth leaves, soft texture and slightly wavy edges. Another crisp leafy vegetable has inverted oval leaves, which are wrinkled, soft and serrated.

Lettuce picture appreciation