pyrethrum in English

noun
1
an aromatic plant of the daisy family, typically having feathery foliage and brightly colored flowers.
Not all herbs smell good - catmint, curry plant, pyrethrum , rue, santolina and tansy are all pretty pongy.

Use "pyrethrum" in a sentence

Below are sample sentences containing the word "pyrethrum" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "pyrethrum", or refer to the context using the word "pyrethrum" in the English Dictionary.

1. At that time in Japan, pyrethrum powder was mixed with sawdust and burned to repel mosquitoes.

2. Active ingredients found in mosquito coils may include: Pyrethrum – a natural, powdered material from a kind of chrysanthemum plant.

3. Fossey is responsible for the revision of a European Community project that converted parkland into pyrethrum farms.

4. Heading No 1302 applies inter alia to liquorice extract and extract of pyrethrum, extract of hops, extract of aloes and opium.

5. Fewer than 10% of organic farmers use these pesticides regularly; one survey found that only 5.3% of vegetable growers in California use rotenone while 1.7% use pyrethrum.

6. The 19th century saw the introduction of two more natural pesticides, pyrethrum, which is derived from chrysanthemums, and rotenone, which is derived from the roots of tropical vegetables.

7. Treatment of ectoparasites includes manual procedures, such as repeated cleansing and combing out of lice-infected hair and also local antiparasitic treatment with permethrin, pyrethrum extract, allethrin and dimeticon.

8. Although pyrethrum (natural pyrethrins) is more effective against insects when used with piperonyl butoxide (which retards degradation of the pyrethrins), organic standards generally do not permit use of the latter substance.