Definition of Canada thistle in English:

Canada thistle

Line breaks: Can¦ada this¦tle

noun

North American
The European creeping or field thistle, which has become naturalized as a serious weed in North America.
  • Cirsium arvense, family Compositae
More example sentences
  • Occasionally, broadleaf weeds, such as Canada thistle or ragweed, become established in winter wheat fields and interfere with grain harvest or with the following soybean crop.
  • Fields with quackgrass, Canada thistle, and other cool-season perennial weeds will almost always require the use of glyphosate around the time of planting.
  • As agriculture expanded onto the prairies, wild oats and sow thistle, leafy spurge and Canada thistle migrated westward.

Definition of Canada thistle in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day flagitious
Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous