What does pyrethrum mean?
Pyrethrum is a plant-based insecticide derived from the dried flowers of the Tanacetum genus. Native to Europe and Asia, it has been used for centuries to control aphids, whiteflies, and other pests. The active compounds in pyrethrum, pyrethrins, are toxic to insects but relatively safe for humans and pets. Pyrethrum is often used in greenhouses, gardens, and agricultural settings to minimize the use of chemical pesticides. Its natural origin and biodegradable properties make it an attractive alternative to synthetic insecticides.
noun
A plant of the genus Tanacetum, native to Europe and Asia, whose dried flowers are used as an insecticide.
- 1. A plant of the genus Tanacetum, native to Europe and Asia, whose dried flowers are used as an insecticide.
"The gardener used pyrethrum to control the aphid infestation in the greenhouse."
"The gardener used pyrethrum to control the aphid infestation in the greenhouse."
"The farmer applied pyrethrum to the crops to prevent damage from pests."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of pyrethrum
The word 'pyrethrum' is derived from the Greek word 'pyrethron', meaning 'flower'. It was first used to describe the plant in the 17th century. The active compounds in pyrethrum, pyrethrins, were isolated and named in the 19th century.
Usage notes
Pyrethrum is often used in combination with other insecticides to enhance its effectiveness. It is also used in organic gardening and agriculture to minimize the use of chemical pesticides.