Marigold Not only a flower, but it also has many uses. In Salads, herb butter, and on Fish it has a butter taste surprisingly. Ingestion Marigold is used internally to treat gastric ulcers and infections of the mouth and throat. Drinking marigold tea or eating marigold flowers or leaves improves digestion by stimulating bile production. Ingestion of marigolds helps to cure menstrual cramps, liver disease, and constipation.