leaf curl

noun

: any of numerous plant diseases caused by ascomycetous fungi (genus Taphrina of the family Taphrinaceae) or viruses (especially genus Begomovirus of the family Geminiviridae) and characterized by curling of leaves
especially : peach leaf curl

Examples of leaf curl 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.
Tomatoes are susceptible to many viruses, such as tomato yellow leaf curl virus, that cause leaves to twist and curl. Kim Toscano, Southern Living, 29 May 2026 Peach leaf curl is caused by a fungus that thrives in humidity (another reason to stop using overhead spray irrigation). Nan Sterman, San Diego Union-Tribune, 2 May 2026 Peach leaf curl, brown rot, powdery mildew, peach scab, and other diseases also commonly afflict the tree. Sj McShane, Martha Stewart, 10 Mar. 2026 Peach leaf curl, which affects both peaches and nectarines, is a devastating fungus disease. Joshua Siskin, Oc Register, 15 Jan. 2026 Little by little, the leaf curls over the insect, almost as if possessive, as the digestive process begins. Riley Black, Smithsonian Magazine, 6 June 2025 Pepper leaf curl might go away on its own depending on the cause. Lauren Landers, Better Homes & Gardens, 20 July 2024

Word History

First Known Use

1850, in the meaning defined above

Time Traveler
The first known use of leaf curl was in 1850

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Cite this Entry

“Leaf curl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leaf%20curl. Accessed 1 Jun. 2026.

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