| 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 |
• 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
Land owners and managers have long recognized the need to control invasive plants to limit their impacts. In May 2018, a new smartphone app...
This will be of interest to those writing pest management plans or who work in the vegetation management field. Check out IVMA's website...
