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
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This is especially important for zucchini, which is prone to powdery mildew.
—
Michelle Mastro, Martha Stewart, 30 Apr. 2026
Water at the base of the plant rather than over the top to avoid getting the leaves wet, which can lead to powdery mildew.
—Karen Brewer Grossman, Southern Living, 30 Apr. 2026
Insufficient sun exposure may also bring on disease since leaves wet for more than a few hours, even if the wetness comes from morning dew, are likely to develop powdery mildew.
—Joshua Siskin, Oc Register, 16 Apr. 2026
Possible diseases include powdery mildew, blight, crown rot, leaf gall, root rot, leaf spot, and rust.
—Mary Marlowe Leverette, The Spruce, 12 Mar. 2026
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Michelle Mastro, Martha Stewart, 30 Apr. 2026
Water at the base of the plant rather than over the top to avoid getting the leaves wet, which can lead to powdery mildew.
—Karen Brewer Grossman, Southern Living, 30 Apr. 2026
Insufficient sun exposure may also bring on disease since leaves wet for more than a few hours, even if the wetness comes from morning dew, are likely to develop powdery mildew.
—Joshua Siskin, Oc Register, 16 Apr. 2026
Possible diseases include powdery mildew, blight, crown rot, leaf gall, root rot, leaf spot, and rust.
—Mary Marlowe Leverette, The Spruce, 12 Mar. 2026
See All Example Sentences for powdery mildew
Cite this Entry
“Powdery mildew.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/powdery%20mildew. Accessed 3 May. 2026.
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