: 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
Japanese knotweed Japanese knotweed (Fallopia japonic), pictured above, is a species native to eastern Asia that has been wreaking havoc in North America and in the U.K.
—
Devika Rao, theweek, 9 Sep. 2024
Asian carp, for instance, or global warming in general, or evils as small as the spotted lanternfly and visible as 15-foot-tall stalks of knotweed.
—Neal Rubin, Detroit Free Press, 1 Aug. 2024
No offense to your prize camellia, but the garden is the least of your worries with Japanese knotweed.
—Melissa Locker, Southern Living, 7 Sep. 2023
Weed killers can also help in the process of removing Japanese knotweed.
—Melissa Locker, Southern Living, 7 Sep. 2023
See all Example Sentences for knotweed 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Devika Rao, theweek, 9 Sep. 2024
Asian carp, for instance, or global warming in general, or evils as small as the spotted lanternfly and visible as 15-foot-tall stalks of knotweed.
—Neal Rubin, Detroit Free Press, 1 Aug. 2024
No offense to your prize camellia, but the garden is the least of your worries with Japanese knotweed.
—Melissa Locker, Southern Living, 7 Sep. 2023
Weed killers can also help in the process of removing Japanese knotweed.
—Melissa Locker, Southern Living, 7 Sep. 2023
See all Example Sentences for knotweed
Dictionary Entries Near knotweed
Cite this Entry
“Knotweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knotweed. Accessed 26 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share