The benefits of greens Green plants are therefore called useful, since they contain such chemical elements as: zinc, magnesium, chromium, iron, folic acid, phosphorus, calcium, potassium. Greens are rich in valuable vitamins: A, C, B1, E, B2, PP, B5, B6 and others. The alkaloid lactucin, which causes a bitter taste in some varieties, normalizes metabolism, blood pressure, [...]