Cultivated plant from 0,40 to 3 m of which one uses the leaves.
Sweet annie Qing hao was used 2000 years ago to cure paludism in China. It contains artemisin that cures and prevents malaria without side effect. Rediscovered by Chinese scientists in the seventies several countries of Africa and Vietnam use it nowadays for their anti-malaria campaigns. In Vietnam mortality due to the malaria fell of 90% thanks to its massive use.