How to Use pyrethrum in a Sentence

pyrethrum

noun
  • Nymphs can be controlled with insecticidal soap, pyrethrum, rotenone or neem.
    — Ellen Nibali, baltimoresun.com, 2017-07-11
  • Some gardeners mention pyrethrum as an option for the nymphs, but for the adults, malathion and Sevin are the effective options.
    — Calvin Finch, ExpressNews.com, 2019-06-21
  • Look for pyrethrum in the list of ingredients on your bug spray; it’s one of the most popular ingredients in natural insect repellents.
    — Andrea Beck, Better Homes & Gardens, 2020-08-21

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'pyrethrum.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Last Updated: