Pyrethrum

Pronunciation
/pih-REETH-rum/
Category
Entomology
Singular
Pyrethrum
Plural
Pyrethrums

Definition

A natural insecticide derived from the flowers of Chrysanthemum cinerariaefolium, containing insecticidal pyrethrins.

Etymology

From Greek 'pyrethros', from 'pyrethron', referring to the plant's traditional use as a natural insecticide.

Example

Pyrethrum is extracted from the flowers of Chrysanthemum cinerariaefolium, commonly known as the Dalmatian pyrethrum.

Related Terms

Usage Notes

Pyrethrum is a natural insecticide that breaks down rapidly in sunlight. It is considered less hazardous to mammals than synthetic insecticides but can still have some toxicity.