Canada thistle
- noun
- /ˈkænədə ˈθɪsəl/
- US
:
cardo canadiense
- Over the past 73 years, he's watched Canada thistle and bindweed take over 160 acres of prime winter wheat cropland.
Examples
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The farmer struggled to control the spread of Canada thistle in his fields, as it choked out the native plants.
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Gardeners often face challenges from Canada thistle, which can quickly infest flower beds if not managed.
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Many landowners have implemented strategies to battle Canada thistle, recognizing its impact on local agriculture.
Synonyms
A common weed with sharp leaves and purple flowers that spreads by roots
A common weed with purple flowers and roots that spread underground
Surface Forms
Morphology
The noun compound 'Canada thistle' transparently denotes a kind of thistle associated with Canada; a B1 learner who knows 'Canada' and 'thistle' can readily infer it is a type of plant. While specific botanical facts (e.g., its European origin or invasiveness) are not predictable from the words, the basic referent — a thistle named/linked to Canada — is compositional and clear.
Etymology
Canada thistle may come from early farmers who saw this spiny weed everywhere in parts of North America, especially near Canada, so they called it 'Canada' thistle. That's why today Canada thistle means the invasive, sharp-leaved weed with purple flower heads.
