Cabbage leaves are very smooth, and if pesticides are spilled on them, they will slip off quickly. Cabbage is safe if it is not illegal to use drugs. When eating cabbage, peel off the outermost three leaves. "Pesticides mainly remain on the epidermis, even if there are pesticide residues, they are peeled off.

Cabbage, the scientific name of cabbage, cabbage (Brassica oleracea L. var. capitata L.) is a cruciferous and Brassica plant, which is a variety of cabbage (Brassica oleracea L.). Also known as cabbage, cabbage, pimple white, cabbage, cabbage, cabbage, lotus white and so on. Biennial herb, covered with powdery frost. Short and stout annual stems are fleshy, unbranched, green or grayish green. Most basal leaves are thick, layered into spheroids, oblate, with a diameter of 10-30 cm or more, milky white or light green; Originated from the Mediterranean coast, it was introduced to China in16th century. Cabbage has the characteristics of cold tolerance, disease resistance, strong adaptability, easy storage and transportation, high yield and good quality. It is widely cultivated in China and is one of the main vegetables in the northeast, northwest and north China of China in spring, summer and autumn.