powdery mildew

noun

1
: an ascomycetous fungus (family Erysiphaceae) producing abundant powdery conidia on the host
2
: a plant disease caused by a powdery mildew

Examples of powdery mildew in a Sentence

Recent Examples on the Web Avoid problems with powdery mildew by properly spacing plants to ensure good air circulation. Kim Toscano, Southern Living, 11 July 2024 Common rose diseases like black spot and powdery mildew can reduce flowering. Steve Bender, Southern Living, 10 July 2024 Common Pests & Plant Diseases Chinese snowball viburnum is rarely bothered by deer and known for good disease resistance to bacterial leaf spots and powdery mildew. Rebecca Bull Reed, Southern Living, 10 June 2024 Peonies do best when planted in the full sun and are very susceptible to powdery mildew in our humid summers. Chris McKeown, The Enquirer, 27 Apr. 2024 See all Example Sentences for powdery mildew 

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

Word History

First Known Use

1889, in the meaning defined at sense 1

Time Traveler
The first known use of powdery mildew was in 1889

Dictionary Entries Near powdery mildew

Cite this Entry

“Powdery mildew.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/powdery%20mildew. Accessed 26 Jul. 2024.

Kids Definition

powdery mildew

noun
: a fungus that is a parasite and produces a large number of powdery spores on the host
also : a plant disease caused by such a fungus

More from Merriam-Webster on powdery mildew

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