sooty mold

noun

: a dark growth of fungus mycelium growing in insect honeydew on plants
also : any of various ascomycetous fungi (order Dothideales) producing such growth

Examples of sooty mold in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Aphids excrete the sap as honeydew, leaving leaves sticky and susceptible to sooty mold. Mary Marlowe Leverette, Southern Living, 22 Apr. 2026 In contrast, aphids produce a sticky residue called honeydew that coats foliage and can later develop into a black coating known as sooty mold. Anthony Reardon, Kansas City Star, 20 Apr. 2026 Leaves covered in powdery black sooty mold are your first clue to these pests. Nan Sterman, San Diego Union-Tribune, 7 Mar. 2026 Finally, like mealy bugs, the honeydew secreted by aphids can encourage the growth of sooty mold and fungus. Jon Vanzile, The Spruce, 30 Jan. 2026 See All Example Sentences for sooty mold

Word History

First Known Use

1901, in the meaning defined above

Time Traveler
The first known use of sooty mold was in 1901

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Cite this Entry

“Sooty mold.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sooty%20mold. Accessed 3 May. 2026.

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