Botanical atlas

Sweet Chestnut

Castanea sativa

For thousands of years, sweet chestnut has been a tree of survival as much as medicine. In the mountain villages of Corsica, Tuscany, and the Cevennes, whole communities once depended on dried, ground chestnuts as their bread and porridge through long winters, earning it the old nickname 'the bread tree.' Alongside the nuts, the broad summer leaves found their own quiet place in European folk herbalism, gathered and dried to make a soothing, astringent tea traditionally used for coughs, sore throats, and the rattling irritation of whooping cough. Herbalists valued the leaf for its tannins, which were thought to tighten and calm irritated tissue, while the nuts themselves were simply treasured as honest, warming food for hard seasons.

Safety.

Sweet chestnuts are a safe, well-tolerated food for most people, though the leaf tea's tannins can be harsh on a sensitive stomach if used daily. Don't confuse this tree with horse chestnut (Aesculus hippocastanum), an unrelated tree whose raw nuts, bark, leaves, and flowers are toxic.