Canada Thistle

NWIPC NWIPC NWIPC

Plant Bio

Common Name:Canada thistle
Family:Asteraceae
Genus:Cirsium
Species:arvense
Classification/Rank:Very Invasive
Method of Transportation:A single seedling can produce a large patch through vegetative propagation
Habitat/Range:Mesic to dry roadsides, fields and disturbed areas in the lowland, steppe and montane zones

Description

• biennial herb that grows 0.3 to 2.0 m tall • stems are erect, branched, and hairy •leaves are irregularly toothed, alternate, lance shaped on the lower stem becoming broader upwards, spiny toothed, smooth and green above, densely white hairy below • flowers are pink-purple

News

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posted: November 7, 2018
2017 Annual Report from NWIPC is now online

NWIPC's Annual Report for 2017 was released at our AGM in Smithers in October 2018. Check it out here.

posted: November 3, 2018
WeedsBMP App for Forage and Livestock Producers Now Available

Land owners and managers have long recognized the need to control invasive plants to limit their impacts. In May 2018, a new smartphone app...