knot·​weed | \ ˈnät-ˌwēd How to pronounce knotweed (audio) \

Definition of knotweed

: any of several herbs (genus Polygonum) of the buckwheat family with leaves and bracts jointed and having a very short petiole broadly : polygonum

Examples of knotweed in a Sentence

Recent Examples on the Web Giant hogweed and Japanese knotweed both were originally used as garden plants. Brittany Trang, Milwaukee Journal Sentinel, 10 Aug. 2021 Another problem is the Japanese knotweed that has taken over the yard. Kelly Klein, Star Tribune, 25 June 2021 Bohn is worried that in a few years, Milwaukee might be rife with infrastructure problems from new Japanese knotweed populations. Brittany Trang, Milwaukee Journal Sentinel, 10 Aug. 2021 Since the Fifties, such literature has grown like Japanese knotweed over the shelves of airport bookstores, and its authors have filled hotel conference rooms with eager seminar attendees. Hari Kunzru, Harper's Magazine, 27 Apr. 2021 Readers of the book will find new ways to prepare vegetables, from celery root to cauliflower, and learn about more unusual ingredients like carrot seeds, knotweed and radish seed pods. Mark Kennedy, Star Tribune, 21 Apr. 2021 His special passion was attempting to eradicate Japanese knotweed, an invasive plant that resembles tall bamboo., 19 Mar. 2021 Also prevalent are Callery pear, better known as the Bradford pear, wintercreeper, Canada thistle, garlic mustard, burning bush, multiflora rose, autumn olive, Japanese honeysuckle and Japanese knotweed. John Tuohy, The Indianapolis Star, 9 Nov. 2020 Many of those weedy species are also invasive, including Scotch broom, dandelions, Himalayan blackberry and Japanese knotweed, among others. Alison Mcafee, Scientific American, 4 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'knotweed.' 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 knotweed

1884, in the meaning defined above

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Time Traveler for knotweed

Time Traveler

The first known use of knotweed was in 1884

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Dictionary Entries Near knotweed

knotty rhatany


knotweed spurge

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Cite this Entry

“Knotweed.” Dictionary, Merriam-Webster, Accessed 17 Jan. 2022.

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