Herb Lore: The Magical Hydrangea-Not many people talk about the magical properties of the hydrangea. According to folklore, a person could break a curse by using it. In general the hydrangea stands for friendship, devotion, and understanding. Hydrangea is also used medicinally. Native Americans used the root as a diuretic and detoxifier. The bark of the hydrangea was used to ease muscle sprains and burns. It is still used today in alternative medicine as a tonic herb.