Kanawao
NameKanawao
Scientific NameBroussaisia arguta
Common NamesKanawao, Hawaiian Hydrangea
Plant FamilyHydrangeaceae
Natural HabitatEndemic to the Hawaiian Islands, Kanawao thrives in wet to moist forests, often found in ravines and along stream banks, at elevations from 300 to 2,000 meters.
Parts Usedleaf,bark
Medicinal Actionsanti-inflammatory,antimicrobial,astringent
Traditional UsesIn traditional Hawaiian medicine (Laʻau Lapaʻau), the leaves and bark of Kanawao were used to treat various ailments. It was commonly applied externally as a poultice for cuts, wounds, and skin conditions, and internally for stomach issues, general debility, and as a general tonic.
Active Constituentstannins, flavonoids, phenolic compounds
Preparation Methodsinfusion,decoction,poultice
Contraindications & WarningsLimited specific data on contraindications; general caution advised for pregnant or nursing individuals, and those with known plant allergies. Always consult a healthcare professional before use.
Cultivation NotesKanawao prefers moist, well-drained, acidic soil and partial shade, mimicking its native forest understory habitat. It requires high humidity and consistent moisture to thrive.
Rarityuncommon
Description
Kanawao is an endemic Hawaiian shrub or small tree, typically growing 1-3 meters tall. It features large, serrated leaves and terminal clusters of small, star-shaped flowers that can be white, pink, or purplish, followed by fleshy berries.
