Hydrangea sousae
Image: anschieber (cc-by-nc)
NameHydrangea sousae
Scientific NameHydrangea macrophylla
Common NamesBigleaf Hydrangea, French Hydrangea, Mophead Hydrangea, Lacecap Hydrangea, Hortensia
Plant FamilyHydrangeaceae
Natural HabitatNative to coastal and mountainous regions of Japan, it thrives in moist, well-drained soils, often found in woodlands or along stream banks. It prefers partial shade.
Parts Usedroot,leaf,flower
Medicinal Actionsdiuretic,anti-inflammatory
Traditional UsesTraditionally, the root and leaves have been used in Native American medicine to address urinary tract issues, kidney stones, bladder infections, and prostate problems due to its diuretic properties. It was also employed for conditions like rheumatism and gout.
Active ConstituentsHydrangin, saponins, flavonoids, volatile oils
Preparation Methodsdecoction,infusion,tincture
Contraindications & WarningsLarge doses can cause gastrointestinal upset including nausea, vomiting, and diarrhea. It should be used with caution by individuals with kidney disease or those taking diuretic medications. Pregnant or breastfeeding women should avoid its use.
Cultivation NotesPrefers partial shade and consistently moist, well-drained soil. Soil pH influences flower color (acidic for blue, alkaline for pink). Requires protection from harsh afternoon sun and consistent watering.
Raritycommon
Description
A deciduous shrub characterized by its large, ovate, serrated leaves and prominent, often spherical or flat-topped flower clusters. Flower color varies from pink to blue depending on soil pH, and the plant is a popular ornamental.
