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Canada thistle
Cirsium arvense
Cirsium arvense
Canada thistle Aster Family
Cirsium arvense Asteraceae
--more--
common names
  Canada thistle
  lettuce from hell thistle
accepted scientific name
  •Cirsium arvense (L.) Scop.
rules for finding collection records
  Cirsium arvense (23053)
family name
  • Asteraceae
Image Author: ©2010 Matt Lavin
Image License: CC BY
Image Source

Category: Wildflowers
Flowers: No obvious petals, Many petals
Petal colors: color color
Flower size is about 0.8 inches
Leaf: Alternate
Plant Observed 3rd week of March thru 2nd week of November

Plant Showiness (54%)
base map where plant found
mag select

Disturbed
Riparian
Grassland
Meadow
Forest
Wetland
Native Plant Status
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native Not Native
native Not Present

Invasive in some regions.