A biennial herb of European origin with pink flowers on prickly stems. It is established across most of North America and is regarded as a noxious weed nearly everywhere.
Centaurea biebersteinii, family Compositae
Example sentencesExamples
Sheep are efficient foragers and, unlike cattle, can thrive on a fair number of invasive weeds, such as leafy spurge and spotted knapweed.
Recently, as part of a school project, two teenagers have been coming out to the farm to raise beetles that selectively attack spotted knapweed.
The weeds, spotted knapweed and leafy spurge, are native to Europe.
Invasive plant species, such as spotted knapweed, may out-compete native grasses.
The spotted knapweed is a European invader that, over the last hundred years, has spread throughout the pastures and rangeland of western North America, often out-competing native species.
Definition of spotted knapweed in US English:
spotted knapweed
noun
A biennial herb of European origin with pink flowers on prickly stems. It is established across most of North America and is regarded as a noxious weed nearly everywhere.
Centaurea biebersteinii, family Compositae
Example sentencesExamples
The weeds, spotted knapweed and leafy spurge, are native to Europe.
Sheep are efficient foragers and, unlike cattle, can thrive on a fair number of invasive weeds, such as leafy spurge and spotted knapweed.
The spotted knapweed is a European invader that, over the last hundred years, has spread throughout the pastures and rangeland of western North America, often out-competing native species.
Invasive plant species, such as spotted knapweed, may out-compete native grasses.
Recently, as part of a school project, two teenagers have been coming out to the farm to raise beetles that selectively attack spotted knapweed.