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.
Leaves covered in powdery black sooty mold are your first clue to these pests. Nan Sterman, San Diego Union-Tribune, 7 Mar. 2026 The sticky honeydew secretions can attract ants and wasps, as well as lead to sooty mold. Karen Brewer Grossman, Southern Living, 4 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 Generally, fungicides won’t effectively get rid of sooty mold, but sometimes horticultural oil sprays used to treat overwintering scale or crawlers can help to speed up its removal. Miri Talabac, Baltimore Sun, 23 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

Browse Nearby Words

Cite this Entry

“Sooty mold.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sooty%20mold. Accessed 15 Mar. 2026.

More from Merriam-Webster on sooty mold

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster