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  • noun

Synonyms for pyrethrum

made of dried flower heads of pyrethrum plants

white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below

spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers

used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

References in periodicals archive ?
Caption: Experimental fields are testing the efficiency of pyrethrums as part of an integrated pest management strategy.
She has tried all of the typical prescriptions, ranging from pyrethrums to malathion, lindane, and ivermectin.
Other recommendations include avoiding bananas, which are thought to attract the insects, and planting marigolds, which contain pyrethrums that repel mosquitoes and other insects.
You could also dress up your yard with marigolds which not only produce cheerful flowers but contain pyrethrums which repel insects including mosquitoes.
Dead-head annuals like petunias, sweet peas, pansies, petunias, pelargoniums (geraniums) and French marigolds, and perennials such as delphiniums, shasta daisies and pyrethrums. p CLEAN bird tables and feeders now that the spring rush from young birds is over.
Q I HAD very little success last year in growing pyrethrums which I planted in October and November.