Pot marigold (Calendula officinalis) 10/01/2024 Pot marigold in case of calluses One plant, one use! Pot marigold Calendula officinalis For calluses Crush some fresh leaves Macerate them in vinegar Apply as a poultice Learn more about this plant Source: Fournier, P.-V. (2010). Dictionnaire des plantes médicinales et vénéneuses de France. Omnibus.