The yellow center of the 'killer chrysanthemum' contains a natural toxin that is a powerful insecticide. This flower, the pyrethrum plant, contains a potent chemical that is made into an effective ...

The value of the plant lies in the insecticidal properties of four chrysanthemum esters contained in the flower heads, that is, pyrethrin I, pyrethrin II, cinerin I and cinerin II, collectively ...

cinerariifolium, which is effective and ... In historical practices, ancient Chinese texts mention using chrysanthemum-like plants for pest control, and the Roman Empire utilized pyrethrum for ...

Some varieties are particularly rich in pyrethrin, such as Chrysanthemum cinerariifolium, which is commonly used in the ...

Pyrethrum is a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium and Chrysanthemum coccineum. Its active ingredient are pyrethrins. Pyrethrum flowers are harvested ...