crab·​grass | \ ˈkrab-ˌgras How to pronounce crabgrass (audio) \

Definition of crabgrass

: a grass (especially Digitaria sanguinalis) that has creeping or decumbent stems which root freely at the nodes and that is often a pest in turf or cultivated lands

Examples of crabgrass in a Sentence

Recent Examples on the Web An abundance of weeds like crabgrass or thatch, fungal growth like mushrooms, standing water or runoff after irrigation, yellowing and eventually dying patches of grass are all signs of overwatering. From Usa Today Network And Wire Reports, USA TODAY, 6 June 2022 This invasive weed germinates two to three weeks earlier than another common grassy summer lawn scourge, crabgrass. Miri Talabac,, 2 Mar. 2022 As for crabgrass, the best products for use in urban landscapes are Halts, Balan or Dimension. Neil Sperry, San Antonio Express-News, 18 Feb. 2022 Remove the crabgrass, then add new sod or plugs to grow during the cooler months. Tom Maccubbin,, 27 Nov. 2021 Nowadays, several of the world’s key crop plants are C4, including corn, millet, and sorghum, and so are several of the world’s key weeds, like crabgrass and tumbleweed. Elizabeth Kolbert, The New Yorker, 6 Dec. 2021 Preemergence herbicides often used to control crabgrass can keep the runners from rooting down. Tom Maccubbin,, 16 Oct. 2021 Researchers at Michigan State University have found that mulching leaves for just three years produces a nearly 100 percent decrease in dandelion and crabgrass growth. cleveland, 15 Oct. 2021 Keep in mind that crabgrass germinates whensoiltemperatures hit about 55°F for 24-48 hours. Todd Nelson, Star Tribune, 17 Apr. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crabgrass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of crabgrass

1743, in the meaning defined above

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Time Traveler for crabgrass

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The first known use of crabgrass was in 1743

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Dictionary Entries Near crabgrass

crab float



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Cite this Entry

“Crabgrass.” Dictionary, Merriam-Webster, Accessed 15 Aug. 2022.

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More Definitions for crabgrass


crab·​grass | \ ˈkrab-ˌgras How to pronounce crabgrass (audio) \

Kids Definition of crabgrass

: a weedy grass with coarse stems that root at the joints

More from Merriam-Webster on crabgrass

Nglish: Translation of crabgrass for Spanish Speakers Encyclopedia article about crabgrass


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