Purple-backed lettuce belongs to the Chrysanthemum family, Asteraceae, genus Panax, and may contain pyrrolizidine alkaloids (which are mildly toxic).

This statement can only represent one's personal opinion and has not been confirmed by the relevant authorities. How much pyrrolizidine alkaloids are in purple backyard vegetables, and whether its concentration is enough to cause liver cirrhosis, these are not supported by scientific data for the time being.

1. Purple back vegetables, alias: red phoenix vegetable, two-color Panax quinquefolium, red cabbage, etc., for the daisy family Panax quinquefolium perennial herbaceous plants, 50-100 cm high, the leaf blade above the green, below the drying of the purple, hairless, nutritious, high-value, and the purple back vegetables grow strong, strong resistance to adversity, basically not subject to disease and insect hazards, no pesticide contamination. In southern China, such as Guangdong, Guangxi, Hainan, Fujian, Zhejiang, Yunnan, Jiangxi, Sichuan, Taiwan and other places of rural cultivation, can be used for medicinal purposes and vegetables.

2. Suitable climate: prefer warm and humid climate, not cold, when the temperature is lower than 10 degrees will stop growing. Purple back of vegetable fertilizer and moisture resistance, like moist, loose and fertile, rich in organic matter, deep soil. Born on mountain slopes under the forest, on the rocks or riverside wet place, altitude 600-1500 meters.

3. Nutritional value: purple back vegetables grow robust, strong resistance, basically not subject to pests and diseases, no pesticide pollution. Its young branches and leaves to do dishes, the texture is crisp and tender, with the special fragrance of plants in the Asteraceae family, the flavor is unique. Folk believe that the purple back of the vegetable has cool blood, go to the effect of fire, is a beneficial to human health health care vegetables. Can be fried, soup, hot pot, with a special flavor, tender and delicious, fried food with curd, salsa and other condiments, unique flavor.