black spot
noun
1
: any of several bacterial or fungal diseases of plants characterized by black spots or blotches especially on the leaves
2
chiefly British
: a dangerous or troublesome place or area
… Wisteria Lane has always been a major accident black spot.—
Jane Simon
Jane SimonExamples of black spot in a Sentence
Recent Examples on the Web
Treat roses for black spot and fertilize them if needed.
—Andy Wilcox, Better Homes & Gardens, 31 May 2026
If well cared for, 'Knock Out' roses are disease-resistant to black spot, powdery mildew, and pests.
—Steve Bender, Southern Living, 27 May 2026
This includes powdery mildew, white and gray molds like botrytis, slime mold, and black spot, Bradley says.
—Michelle Mastro, The Spruce, 23 May 2026
Unlike black spot, downy mildew often starts at the top of the plant.
—Rita Perwich, San Diego Union-Tribune, 2 May 2026
See All Example Sentences for black spot
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Andy Wilcox, Better Homes & Gardens, 31 May 2026
If well cared for, 'Knock Out' roses are disease-resistant to black spot, powdery mildew, and pests.
—Steve Bender, Southern Living, 27 May 2026
This includes powdery mildew, white and gray molds like botrytis, slime mold, and black spot, Bradley says.
—Michelle Mastro, The Spruce, 23 May 2026
Unlike black spot, downy mildew often starts at the top of the plant.
—Rita Perwich, San Diego Union-Tribune, 2 May 2026
See All Example Sentences for black spot
Cite this Entry
“Black spot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/black%20spot. Accessed 4 Jun. 2026.
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