Minnesota Seasons - Canada thistle


Canada thistle				More photos…
Cirsium arvense

Taxonomy	Family:	Asteraceae (aster)
	Subfamily:	Carduoideae
	Tribe:	Cynareae
	Subtribe:	Carduinae

Nativity	Native to western Asia and Europe. Introduced and naturalized in North America.
Status
Habitat	Disturbed sites. Fields, pastures, roadsides, waste places.
Flowering	June to October
Flower Color	Pink
Height	12″ to 48″

Identification

Similar Species

Range			Sources: 2, 3, 5, 7.

Sightings	Agassiz Dunes SNA Butterwort Cliffs SNA Carver Park Reserve Cedar Mountain SNA Clear Lake SNA Crow Wing State Park Elm Creek Park Reserve Flandrau State Park Hayes Lake State Park Kasota Prairie SNA Lake Elmo Park Reserve Lake Rebecca Park Reserve Lutsen SNA			Mille Lacs Kathio State Park Mound Spring Prairie SNA Myre-Big Island State Park Old Mill State Park Ordway Prairie Oronoco Prairie SNA Rock Ridge Prairie SNA Spring Beauty Northern Hardwoods SNA Strandness Prairie Uncas Dunes SNA Wild Indigo Prairie SNA Zimmerman Prairie

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Synonyms	Carduus arvensis Cirsium arvense var. argenteum Cirsium arvense var. horridum Cirsium arvense var. integrifolium Cirsium arvense var. mite Cirsium arvense var. vestitum Cirsium incanum Cirsium setosum Serratula arvensis

Common Names	California thistle Canada thistle Canadian thistle perennial thistle