: 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
Elsewhere, including the United States and Britain, knotweed is widely considered a vegetable plague.
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Zoë Lescaze, New York Times, 13 Apr. 2025
Bonus points for the support from soothing botanicals like frankincense, gotu kola, white birch bark, and knotweed.
—Annie Blackman, Allure, 9 Apr. 2025
Summer Annual Weeds Seeds of warm-season annuals like crabgrass, bindweed, knotweed and lamb’s quarters germinate in spring and plants often get a jump on growth before heat-loving grasses like bermudagrass get started.
—Kim Toscano, Southern Living, 5 Apr. 2025
Drainage experts, sunlight specialists, energy boffins, flood-risk experts and more have been summoned — even someone to check the Japanese knotweed on nearby Scarrington Road.
—Daniel Taylor, The Athletic, 16 Feb. 2025
See All Example Sentences for knotweed
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Zoë Lescaze, New York Times, 13 Apr. 2025
Bonus points for the support from soothing botanicals like frankincense, gotu kola, white birch bark, and knotweed.
—Annie Blackman, Allure, 9 Apr. 2025
Summer Annual Weeds Seeds of warm-season annuals like crabgrass, bindweed, knotweed and lamb’s quarters germinate in spring and plants often get a jump on growth before heat-loving grasses like bermudagrass get started.
—Kim Toscano, Southern Living, 5 Apr. 2025
Drainage experts, sunlight specialists, energy boffins, flood-risk experts and more have been summoned — even someone to check the Japanese knotweed on nearby Scarrington Road.
—Daniel Taylor, The Athletic, 16 Feb. 2025
See All Example Sentences for knotweed
Cite this Entry
“Knotweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knotweed. Accessed 23 Apr. 2025.
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