Hydrangea sikokiana
NameHydrangea sikokiana
Scientific NameHydrangea sikokiana
Common NamesShikoku Hydrangea, Japanese Hydrangea
Plant FamilyHydrangeaceae
Natural HabitatNative to the mountainous regions of Shikoku and Kyushu, Japan, thriving in moist, shaded woodlands and forest understories.
Parts Usedroot,leaf
Medicinal Actionsdiuretic,anti-inflammatory
Traditional UsesWhile specific traditional uses for Hydrangea sikokiana are less documented, other species within the Hydrangea genus, such as H. arborescens, have been traditionally used for urinary tract issues, including kidney and bladder stones, and as a diuretic.
Active Constituentshydrangin, saponins, flavonoids, hydrangenol, phyllodulcin
Preparation Methodsdecoction,infusion
Contraindications & WarningsLarge doses may cause gastrointestinal upset (nausea, vomiting, diarrhea). Not recommended for pregnant or breastfeeding individuals. May interact with diuretic medications or those for kidney conditions.
Cultivation NotesPrefers moist, well-drained, acidic to neutral soil and partial to full shade. Requires consistent moisture and protection from harsh afternoon sun.
Rarityuncommon
Description
Hydrangea sikokiana is a deciduous shrub native to Japan, characterized by its large, ovate to broadly ovate leaves with distinctly serrated margins. The plant typically produces white, showy flowers, though these are not visible in the provided image.
