Common Name -  Canada Thistle
	Scientific Name - Cirsium arvense
	Family Name -  Daisy (Asteraceae)
Season	Perennial, summer and fall.
Habitat	Roadsides, pastures, disturbed land.
Flower	Composite, purple, disk flowers only, flower contains only male or female parts, not both, sexes separate, heads small and abundant.
Leaves	Alternate, simple, lobed, spiny, clasp the stem. Stems smooth.
Click on the thumbnail photograph to see a larger image of the Canada Thistle.
Click on a name (left column) to see another flower.