knapweed
Noun
Meaning
The black centaury (Centaurea nigra); -- so called from the knoblike heads of flowers. Called also bullweed.
Source: Webster's dictionarySynonyms
centaurea
cornflower
bluebottle
caltrop
centaury
loggerheads
feverwort
black knapweed
hardheads
lesser knapweed
bluet
great knapweed
greater knapweed
genus Centaurea
slender knapweed
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Hypernyms
Hyponyms
Phrases with the word
Examples
A single mature knapweed plant will produce 18,000 to 24,000 seeds per year.
Ranchers Leo and Lois Cremer grew up in the area and were certainly acquainted with knapweed and leafy spurge.
Oregon is hoping to avoid the problem in Montana, where more than five million acres of rangeland is covered with spotted knapweed.