Plant records: Pyrethrum is the most famous insecticidal plant

Pyrethrum is a perennial herbaceous plant in the Asteraceae family, with the understated elegance, freshness and distinctiveness typical of Asteraceae plants.

Yet this beautiful plant happens to be a deadly nemesis of mosquitoes and other pests. It turns out that pyrethrum contains pyrethrin and cinerin; pyrethrin, also known as pyrethroid, is a colorless, viscous oily liquid. When mosquitoes come into contact with it, they become [backend has set an illegal word or character] paralyzed and die of poisoning. Pyrethrum can not only kill mosquitoes, but is also a great helper in eliminating fruit and vegetable pests. Precisely because of this, it, together with tobacco and derris, is affectionately called one of the "three major botanical pesticides."