pyrethrum
- noun
- /paɪˈrɛθrəm/
- Specialized
:
pirétrum
- With the pyrethrum... you kill the roaches right there in front of God and the client... whereas this starch and fluoride- leave it around, the roaches eat it... come back a few days later, they're running around fat as hogs.
Examples
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Included in the approved list for organic production are copper sulfate for the treatment of fungus and pyrethrum, a naturally occurring insecticide.
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When I worked at an organic farm, I had to undergo training to be certified to spray pyrethrum, neem, copper sulfate, etc.
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Bug powder? - You mean, uh, pyrethrum? - Yes.
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Personally... I prefer a pyrethrum job to a fluoride.
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The label on the insecticide bottle clearly states that it contains pyrethrum, which is effective against a variety of pests.
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Farmers often use pyrethrum as an organic insecticide to protect their crops from harmful insects.
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Pyrethrum is a popular choice among gardeners for controlling pests because it is derived from dried chrysanthemum flowers.
Synonyms
1
7.5
A natural chemical from a type of flower that kills insects
Compounds
- Specialized
A white-flowered plant from the Balkans with divided leaves and silky white hairs underneath used as a natural insect killer
- Specialized
A small Mediterranean plant whose roots people chewed to ease toothache
Surface Forms
Etymology
Pyrethrum for the insect powder also comes from the Greek pyrethron, meaning 'fever' or heat, since the plant gave a strong, hot-smelling oil. That's why today pyrethrum refers to the substance made from the dried flowers and used as a natural insect killer.