Chrysanthemum tea is a warm, herbal beverage prepared from dried chrysanthemum flowers. This tea has a delicate, slightly floral aroma and a light, refreshing taste. Chrysanthemum tea has long been used in traditional Chinese medicine to treat various internal and external health issues. Chrysanthemums can cause side effects in some people, so consult your doctor before consuming chrysanthemum tea. Avoid any type of chrysanthemum supplements if you are allergic to ragweed.