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Warning! This is an
invasive plant, which has the potential to aggressivley crowd out native species. Learn
more about invasive plants!
Canada Thistle (Cirsium arvense)
Image ID: yrt19
Permalink:
myWildflowers.com/detail.asp?photo=yrt19
Invasive
Family:
Asteraceae (Sunflower)
Height: 1 to 5 ft.
Blooms: June to
October
Leaf Type:
lobed
Bloom Size: 1 in. (typical)
Flower Description:
Individual flowers,
Parts indistinct
Location: Youghiogheny River Trail
Date: 6/30/2002
More photos of this flower
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've
grown!
Meyer, Joseph E. (1918). The Herbalist and Herb Doctor. Hammond, Ind.: Indiana Herb Gardens. 400 pp.
