These green leafy vegetables include Ipomoea aquatica, Shanghai Green, Lettuce, Youmaicai, Spinach and so on. Ipomoea aquatica originated in East Asia, and has been widely cultivated as a vegetable, or sometimes escaped into the wild. It is commonly cultivated in Fujian, Guangxi, Guizhou, Jiangsu, Sichuan, Guangdong and other provinces in the middle and south of China. It is suitable for growing in places with warm and humid climate and fertile and wet soil, and it is not cold-resistant, and its stems and leaves will die in case of frost.
Shanghai green, also known as Shanghai cabbage, has fewer leaves and more stems, and the stems are as white as gourd ladle. Therefore, Shanghai green is also called gourd ladle. The characteristic of Shanghai Green is that every leaf is green, and every leaf has completed the photosynthesis of chlorophyll in the growth period. It is distributed in subtropical zone and temperate zone, and it is found everywhere in China.
Lettuce is native to the Mediterranean coast of Europe and domesticated from wild species. The ancient Greeks and Romans first ate it. Lettuce has been introduced into China for a long time, and it is widely cultivated in the southeast coast, especially in the suburbs of big cities and Guangdong and Guangxi. In recent years, the cultivation area has expanded rapidly, and lettuce has also entered the table of ordinary people from hotels and restaurants.
Differences of green vegetables in southern China;
In the eyes of people in Jiangsu, Zhejiang and Shanghai, only Shanghai Green is their green vegetable, which is the most standard green vegetable template. Also, small green vegetables, chicken hair vegetables and baby vegetables are also in the category of green vegetables. However, such vegetables as oily wheat, spinach and lettuce are not really their vegetables.
In addition to eating green vegetables such as sea cucumber and mustard, Sichuanese also have more advanced and beloved top-class green vegetables, such as peas, red stalks, radish sprouts and pumpkin vines.
Cantonese people like to eat lettuce, chicken hair, baby cabbage and kale, but their favorite food is Chinese cabbage. Chinese cabbage, a kind of moss extracted from local vegetables in Guangdong, is especially fresh and tender, with an annual output of 9~ 10, and local people can eat fresh Chinese cabbage all year round.