A cousin of the horse chestnut, the Ohio buckeye (Aesculus glabra) is a tree native to the valleys and woodlands of North America, where Indigenous nations had long known its uses, notably as poultices and external preparations. Its soft wood, spring flowers, and above all its characteristic seeds — toxic in their raw state — earned it a particular place in the notebooks of traditional herbalism, more for external uses than internal ones.
Much like the horse chestnut, the bark and prepared seeds have traditionally been associated with the comfort of heavy legs and venous circulation, mainly in external use.
Indigenous nations used preparations of crushed seeds as an external poultice to soothe joint pain, swelling, and bruises.
The bark and seeds, prepared as a tincture or poultice, were traditionally used as an external rub to relieve rheumatic pain.
Certain tribes used the dried, powdered seeds, notably for ritual or local veterinary uses, apart from any direct food consumption.
The seeds, bark, and young shoots of the Ohio buckeye are toxic in their raw state and must never be ingested without preparation or the advice of a qualified professional. Strictly external use is recommended for preparations from this plant, unless supervised by an experienced herbalist. Contraindicated during pregnancy or breastfeeding, and in young children, owing to the toxic risk (aesculin and saponins). Do not use if undergoing anticoagulant treatment or in case of clotting disorders without medical advice, owing to possible interactions.
Partner herbalists — available with the detailed notebook.
Wikipedia