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Pyrethrum   Listen
Pyrethrum

noun
1.
Made of dried flower heads of pyrethrum plants.
2.
White-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum.  Synonyms: Chrysanthemum cinerariifolium, Dalmatia pyrethrum, Dalmatian pyrethrum, Tanacetum cinerariifolium.
3.
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.  Synonyms: Chrysanthemum coccineum, painted daisy, Tanacetum coccineum.
4.
Used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum.  Synonym: genus Pyrethrum.



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"Pyrethrum" Quotes from Famous Books



... distinct species, its large flowers, the height to which it grows, and the strength of its willow-like stalks being its chief characteristics. Still, to anyone with but a slight knowledge of hardy plants, it asserts itself at once as a Pyrethrum. It is hardy, herbaceous, and perennial, and worth growing in every garden where there is room for large growing subjects. There is something about this plant when in flower which a bare description fails to explain; to do it justice it should be ...
— Hardy Perennials and Old Fashioned Flowers - Describing the Most Desirable Plants, for Borders, - Rockeries, and Shrubberies. • John Wood

... Pyrethrum.—The greenhouse kinds grow in any rich soil, and young cuttings planted under glass root readily. The hardy kinds are not particular as to soil so long as it is not cold and wet, and are increased by seeds sown in heat in February if wanted for early use, ...
— Gardening for the Million • Alfred Pink



Words linked to "Pyrethrum" :   insect powder, Chrysanthemum cinerariifolium, herbaceous plant, genus Tanacetum, Asteraceae, aster family, insecticide, herb, family Compositae, flower, asterid dicot genus, Anacyclus pyrethrum, Tanacetum, family Asteraceae, Compositae



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