horseweed
noun
horse·weed
ˈhȯrs-ˌwēd 
1
: a common annual American composite herb (Conyza canadensis synonym Erigeron canadensis) with an erect usually hairy stem and small discoid heads of yellow disk flowers
2
: a coarse annual North American ragweed (Ambrosia trifida)
Examples of horseweed in a Sentence
Recent Examples on the Web
Other native plant enemies include sow thistle; dandelions, which spread clouds of seeds once their cheerful yellow flowers dry up; tall bulky horseweed; round-leaved cheeseweed; purslane; and spurge, which blanket the ground like thick green doilies.
—
Los Angeles Times, 13 June 2022
But after glyphosate-resistant crops had a few years to grow, farmers began to notice horseweed and morning glory and other weeds encroaching once more into their fields.
—Carl Zimmer, Discover Magazine, 4 May 2010
Some examples are sharp point fluvellin, velvetleaf, puncturevine, horseweed, western bittercress and oxalis.
—OregonLive.com, 27 Feb. 2018
Yet tolerance to 2,4-D has already been documented in several weed species that have elsewhere become glyphosate-resistant superweeds, including waterhemp and horseweed.
—Brandon Keim, WIRED, 24 June 2014
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.
Dictionary Entries Near horseweed
Cite this Entry
“Horseweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/horseweed. Accessed 3 Dec. 2024.
Love words? Need even more definitions?
Merriam-Webster unabridged
Share