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

view all news »
posted: August 13, 2018
Invasive fish found breeding near Prince George - Don’t Let It Loose!

The province says an invasive fish - commonly sold as feed for other fish - has been found breeding in a tributary to the Fraser...

posted: August 12, 2018
Clean Drain Dry - help keep things like the “zombie” plant out of our waterways!

There are native milfoils in BC, but Eurasian water-milfoil is a concern in many parts of eastern Canada and the US, and has been found in...