Herbarium of the Ancients — Detailed Record

Chromolaena odorata

Please read before use: the information below describes traditional and informational uses — it does not replace professional medical advice. In case of doubt, pregnancy, breastfeeding, ongoing treatment, or use in children, seek advice before use.

Enhanced precautions for this plant: Internal use not recommended without supervision, due to the reported presence of potentially hepatotoxic compounds (pyrrolizidine alkaloids) in some studies. Not recommended for pregnant or breastfeeding women, or for young children. External use on broken skin should remain brief; in case of redness, reaction, or lack of improvement, consult a healthcare professional. Chromolaena odorata is considered an invasive species in several regions; harvesting may be locally regulated.

Poultice — Fresh leaves

Crushed leaf poultice

Wash and crush a few fresh leaves between the hands until they release their sap, then apply directly to the affected area, for external use only and for a short duration. Renew the application once or twice daily according to reported tradition. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Light decoction — Dried leaves

Traditional decoction for the throat

According to certain popular uses in Southeast Asia, a few dried leaves were brought to a gentle boil then left to infuse before being drunk in small quantities. This preparation remains poorly documented in the West and professional advice is recommended before any internal use. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

This plant is rarely found in traditional French herbalist shops; it grows mainly wild in tropical and subtropical regions, where it is sometimes cultivated as a hedge or garden border.

Harvesting season

When to harvest it

The leaves are best harvested young and fresh, in any season in tropical climates where the plant grows continuously.

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