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 If you are blessed with the summer grassy weeds such as sand burs and crabgrass, and would like to reduce their presence, now is also the time to apply a pre-emergent herbicide such as Amaze, XL2G or Dimension. Calvin Finch,, "Calvin Finch: It’s weed season, San Antonio gardeners. Here’s what to do," 20 Feb. 2020 Another important lawn care task that should be completed now is to apply a pre-emergent for the summer weeds, particularly sand burs and crabgrass., "What to do now to get your lawn ready for summer in San Antonio," 5 Mar. 2020 Quicker-growing crabgrass will have a harder time outcompeting the rest of your lawn. Jean Nick, Good Housekeeping, "How to Get Rid of Crabgrass Once and for All," 25 June 2018 The crabgrass that is in the lawn now will die out naturally later in the fall. Tim Johnson,, "How to kill weeds with herbicides in the fall," 23 Oct. 2019 Desirable grass may yellow but usually regreens and continues growth where the crabgrass turns brown. Tom Maccubbin,, "Groom, don’t prune hydrangeas," 5 Oct. 2019 In the spring, apply the pre-emergents for crabgrass, grassburs and other summer grassy annuals about two weeks prior to the average date of your last killing freeze for your part of the state, with a follow-up treatment 90 days later. Neil Sperry,, "Star jasmine death mystery: could it be the roots?," 6 Sep. 2019 There are many different types of weeds that can spoil a lush, green lawn: crabgrass, dandelions, white clover, quack grass, wood sorrel, bindweed, broad-leaf plantain, cinquefoil and creeping charley to name a few. Joseph Truini, Popular Mechanics, "How to Get Rid of Lawn Weeds," 19 Apr. 2019 As fact-checkers at Snopes, Jezebel and KnowYourMeme websites confirmed, the #EndFathersDay meme appears to be a lame joke that some troll created on 4chan in 2014, only to be discredited and reborn annually like crabgrass. Clarence Page,, "Is Father’s Day obsolete? Don’t let the trolls fool you.," 14 June 2019

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.

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First Known Use of crabgrass

1743, in the meaning defined above

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The first known use of crabgrass was in 1743

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Cite this Entry

“Crabgrass.” Dictionary, Merriam-Webster, Accessed 3 Aug. 2020.

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More Definitions for crabgrass


How to pronounce crabgrass (audio)

English Language Learners Definition of crabgrass

US : a thick type of grass that often grows and spreads quickly in places where it is not wanted


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

Kids Definition of crabgrass

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

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More from Merriam-Webster on crabgrass

Rhyming Dictionary: Words that rhyme with crabgrass

Spanish Central: Translation of crabgrass

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

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