Hibiscus is not only an ornamental plant but also has good edible and medicinal value. Hibiscus tea can warm the body in winter and can also help reduce weight and lessen the risk of cardiovascular disease. A recent Korean study shows that gossypetin isolated from the flowers and the calyx of hibiscus can effectively improve the cognitive impairment of Alzheimer’s patients.
The famous medical classic “Compendium of Materia Medica” mentioned that the flower of hibiscus has the effects of reducing swelling, diuresis, and removing dampness and heat; the bark of hibiscus tree can kill insects and treat ringworm; it can treat cough, hemorrhoid swelling, and pain embolism.
