After the first frost solar terms, the weather outside is getting colder and colder. Vegetables sown in summer are about to be planted in the garden, and peppers and tomatoes are frosted. Only Chinese cabbage grows in Ao Shuang, especially in the cold winter. Green vegetables become a luxury. Every winter and spring, the price of green vegetables will soar. Four cold-resistant vegetables are recommended today. Now, we should find one of each and eat it until spring.

First, shepherd's purse

Shepherd's purse Shepherd's purse is an annual or biennial herb, also known as ground vegetables, chicken heart vegetables and water chestnut vegetables. The whole grass is tender and tender, which is a kind of wild vegetable that people like to eat. There is a folk saying that "shepherd's purse is a panacea on March 3", which shows that shepherd's purse is a fresh wild vegetable that can be used as medicine and edible. Because there are few wild shepherd's purse,

Shepherd's shepherd's purse likes cold, cool and wet, the most suitable growth temperature is between 12 ~ 20℃, and it has strong cold tolerance. Even at -5℃, it will not be frozen, but it will bolt and bloom in spring at 5℃, so it is more suitable for sowing after the first frost. Choose fertile and soft fields, rake them flat, apply sufficient decomposed organic fertilizer before sowing, and stabilize them after sowing.

Second, spinach.

Spinach, also known as Persian dish, red root dish and parrot dish, is one of the highly nutritious leafy vegetables of Chenopodiaceae, which is rich in various vitamins and minerals. "Compendium of Materia Medica" says "dredge blood vessels, open the chest and diaphragm, lower the breath, relieve cough and moisten dryness", which shows that spinach is also a vegetable with dual functions of medicine and food. It tastes smooth and refreshing, very appetizing.

Spinach is a vegetable that likes cold environment. The optimum growth temperature is 25℃, and it can grow normally even at 6℃, but it can't be lower than 0℃ for a long time, otherwise it may be damaged. At this time, it is usually covered with plastic film or straw. Spinach has a great demand for nitrogen, phosphorus and potassium fertilizer. When applying organic fertilizer before sowing, nitrogen, phosphorus and potassium compound fertilizer should be added, and loose and fertile fields should be selected to preserve water and fertilizer, harrow and level.

Third, black and white dishes

Black-and-white vegetables, also known as Wuta vegetables, boiled vegetables and boiled vegetables, are biennial herbs and a kind of Chinese cabbage. The difference is that the plants are short, the leaves are oval, dark green and almost close to the ground, but the leaves are fat and tender, which can be fried, made into soup or cold. They are delicious and nutritious. Black-and-white vegetables after frosting will make the taste more crisp and indispensable in winter.

Black-and-white vegetables like cold environment, wet but not waterlogging. They can still grow normally at 4-8 degrees, and the suitable growth temperature is 20-25 degrees. Seeds can germinate in one day at 15 degrees, especially like light. It is easy to grow white in rainy days and weak light, and the quality is degraded. Generally, the seedlings are transplanted, soil preparation and fertilization are carried out before sowing, and the seedlings are deeply ploughed and leveled, and transplanted when there are 4-5 leaves after emergence.

Fourth, chrysanthemums

Artemisia selengensis , also known as Artemisia selengensis. It has long oval leaves, light green tender stems and fresh fragrance. It is an annual or biennial herb. Its stems and leaves are edible when tender, and can also be used as medicine. Seedlings or tender stems and leaves are used for frying, cold salad, soup making, etc. It is an excellent ingredient for hot pot in winter, which is very rare.

Chrysanthemum is a cold-resistant vegetable, which is not resistant to high temperature. The optimum growth temperature is about 20℃, and it likes weak light, and the requirements for fertilizer and water are not strict. Before sowing, you should choose loose and fertile soil, turn over the furrow and apply sufficient base fertilizer before sowing. 200 grams of seeds can be used in each border, which can be eaten in about 50 days.

To sum up, after the first frost solar terms, the weather is getting colder and colder, and green vegetables have gradually become the darling of the public, especially around the Spring Festival, Luoyang paper is more expensive. Now shepherd's purse, spinach, black and white vegetables and chrysanthemums are cold-resistant and can be eaten until spring!