There are many kinds of vegetables. The main species are celery, lotus root, mustard, leek, lettuce, chrysanthemum, turnip, fungus, pod, melon, eggplant, radish, cabbage, yam, onion, garlic, pepper, fennel and so on.

The product organs of vegetable plants are divided into five categories, such as roots, stems, leaves, flowers and fruits, so they are also divided into five categories according to the classification of product organs.

(1) root vegetables. The product (edible) organs of this kind of radish are fleshy roots or tuberous roots.

① succulent root vegetables: radish, carrot, kohlrabi (root mustard), turnip, turnip cabbage and root beet.

② Root vegetables: potato and kudzu, etc.

(2) Stems and vegetables. The edible parts of these vegetables are stems or abnormal stems.

① Underground stems: potato, Jerusalem artichoke, lotus root, ginger, water chestnut, arrowhead and taro.

② Aboveground stems: Zizania latifolia, asparagus, bamboo shoots, lettuce shoots, cabbage bulbs and mustard tuber.

(3) Phyllanthus. This kind of vegetables take common leaves or bulbs, foliage and abnormal leaves as product organs.

① Common leafy vegetables: Chinese cabbage, mustard, spinach, celery and amaranth.

② Legumes: cabbage, Chinese cabbage, lettuce and cabbage.

(3) Zinfanye vegetables: onion, leek, turnip and fennel, etc.

④ Bulb vegetables: onion, garlic and lily.

(4) cauliflower. This kind of vegetables take flowers, hypertrophy stems or bulbs as product organs, such as cauliflower, day lily, broccoli, laver vine, artichoke and kale.

(5) Fruits and vegetables. This kind of vegetables take tender fruits or mature fruits as product organs.

1 Solanum fruits: eggplant, tomato and pepper.

② Pods: beans, kidney beans, anal beans, sword beans, edamame, peas, broad beans, eyebrow beans, lentils and winged beans.

③ Preserved fruits: cucumber, pumpkin, wax gourd, loofah, vegetable melon, gourd and snake melon, as well as fresh melons such as watermelon and melon.