2, the flowers of cardinal k are rich in vitamin C, have the effect of cooling down fire, promote the production of fluids to quench thirst, can be used to brew tea and make drinks, its flavor is sour.
3, cardinal k can also be extracted rosmarinus officinalis pigment, used as a food additive in the food industry.
4, medicinal use: calyx and seed oil, cardiovascular, atherosclerosis, hypertension, bone fractures, children's dyspepsia, indigestion in old age, lack of gastric acid and other conditions have therapeutic effects.