Plumeless Thistle

Robert Carr Mark Wenz Robert Carr

Plant Bio

Common Name:Plumeless thistle
Family:Asteraceae
Genus:Carduus
Species:acanthoides
Classification/Rank:Very Invasive
Method of Transportation:
Habitat/Range:• none reported in Northwest BC • occurs in isolated pockets in the Thompson agricutural region, but is a major concern in the Omineca agricultural region

Description

• biennial herb that grows 0.3 to 1.5 m tall
• stems spiny-winged and branched above
• basal leaves lacking; stem leaves narrowly elliptical in outline, deeply lobed or pinately cut, sparsely hairy on main veins, spiny margined
• flowers purprle; heads discoid, clustered, or solitary and erect at the ends of branches

Watch an identification video here.

News

view all news »
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...

posted: August 28, 2018
More bioagents released to help control spotted knapweed

Bioagents are one tool in the fight against invasive plants, and they are intensly studied before release to ensure they won't switch to...