Siam Weed
Image: Thilanka and Nimali (cc-by-nc)
NameSiam Weed
Scientific NameChromolaena odorata
Common NamesSiam Weed, Christmas Bush, Bitter Bush, Triffid Weed, Awolowo Plant
Plant FamilyAsteraceae
Natural HabitatNative to tropical and subtropical Americas, it has become a highly invasive weed in many parts of the world, thriving in disturbed areas, roadsides, agricultural lands, and forest edges.
Parts Usedleaf,flower,whole_plant
Medicinal Actionsanti-inflammatory,antimicrobial,antioxidant,astringent
Traditional UsesTraditionally used for wound healing, stopping bleeding, treating skin infections, malaria, fever, coughs, and as an anti-inflammatory agent. In some cultures, it's applied topically to cuts and bruises.
Active ConstituentsFlavonoids, Alkaloids, Tannins, Essential oils
Preparation Methodsinfusion,decoction,poultice,powder
Contraindications & WarningsMay cause allergic reactions in sensitive individuals. Internal use should be approached with caution due to potential toxicity in high doses or prolonged use, and it is not recommended for pregnant or breastfeeding women.
Cultivation NotesIt is generally not cultivated as a medicinal plant but rather managed as a weed. It grows rapidly in warm, humid climates with ample sunlight and can tolerate a wide range of soil types.
Raritycommon
Description
Chromolaena odorata is a fast-growing perennial shrub or herb, often forming dense thickets. It features ovate to deltoid leaves and produces numerous small, white to pale lavender flowers clustered in terminal corymbs, giving them a fluffy appearance.
