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Canada thistle
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 (8238)
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 0.75 inches
Leaf: Alternate
Plant Observed 3rd week of April thru 3rd week of October

How Likely at this Location (100%)
Name Match (100%)
Plant Showiness (54%)
base map where plant found
mag select

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

Invasive in some regions.
grid lines base