Hydrangea root was used by the American Indian (esp. Cherokee) as a remedy for kidney and bladder stones and is currently being studied as a treatment for malaria. ‘Annabelle’ and ‘Grandiflora’ are commonly available cultivars. Propagation is best by softwood cuttings in May-June or by division in late winter or early spring. Smooth Hydrangea is hardy in zones 4-9.
Natural Remedies for Stones. Hydrangea Root is a favorite. Magnesium acts to protect the kidneys from deposits of calcium accumulating in any significant amount. Kidney stones can result whenever there is a lack of magnesium in the body. You might want to check out the signs and symptoms of magnesium deficiency if you have stones.
Native Americans mixed Hydrangea with Agropyron repens (Couch grass) and Ahhaea rosea (Hollyhock) for serious kidney disorders including nephritis. It acts as an antiseptic, diuretic and helps to dissolve bladder, kidney and gallstones which cause inflammation of the urethra and prostate. It reduces irritation and helps to soothe irritated tissue (including gout).