NOUN
- spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum
- made of dried flower heads of pyrethrum plants
- white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
How To Use pyrethrum In A Sentence
- Daisy plants were first used centuries ago as a lice remedy in the Middle East, and this led to the discovery of pyrethrum insecticides.
- Rwanda's export opportunities to the US include textile and clothing, and horticulture products which include pyrethrum extracts, organic food products as well as essential oils such as geranium which is used in pharmaceutical industries and perfumes. AllAfrica News: Latest
- A natural pyrethrum insecticide is cheaper, less harmful and just as effective as those chemical poisons to kill spiders.
- Then she went to the garden centre and bought pyrethrum with which to spray the greenfly. Times, Sunday Times
- Not all herbs smell good - catmint, curry plant, pyrethrum, rue, santolina and tansy are all pretty pongy, ranging from slightly musty to downright disgusting.
- You can treat them with pyrethrum, white oil, soapy water or just squash them with your fingers.
- ‘That's pyrethrum,’ said Niko ‘it's used as an insecticide.’
- These hatch out in moist potting mix and can be treated by immersing the pot and spraying the foliage in a solution of pyrethrum insecticide.
- Numerous flowers are called Bachelor's Buttons, including daisies, globe flowers, pyrethrums, and different kinds of ranunculi, but here we have the "original and true;" probably it originated in some ancient English garden, as Gerarde says, "It groweth in the gardens of herbarists & louers of strange plants, whereof we have good plentie, but it groweth not wild anywhere. Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies.
- When I looked closely I could see the truck had a PyGanic label with the iconic pyrethrum flower on the side.