Gangtok, March 16 -- Walk through the rural farmlands of West Africa, the hillside villages of Nepal, Sikkim in India or the sun-drenched lowlands of Indonesia, and you will almost certainly encounter it - a sprawling, fast-growing shrub that farmers uproot with frustration and discard without a second thought. Known across cultures by many names - Siam weed, bitter bush, Jack in the Bush, Akintola leaf, Banmara in Nepali - Chromolaena odorata has long worn the label of an agricultural pest. Yet science is now confirming what indigenous healers have quietly known for generations: this dismissed plant is, in fact, a sophisticated natural pharmacy.

A Global Traveler with Deep Roots

Chromolaena odorata did not originate in the tropics wher...