Canada Thistle
Image courtesy of the slide collection of Jack Harper.
Canada Thistle
Image courtesy of Jeffrey Borger.
Canada Thistle
Image courtesy of Jeffrey Borger.
Canada Thistle
Image courtesy of Jeffrey Borger.
Canada Thistle
Image courtesy of Jeffrey Borger.
Canada Thistle
Image courtesy of Matthew Naedel.
Canada Thistle
Spines. Image courtesy of Matthew Naedel.
Canada Thistle
Mother and daughter plant spread by rhizome. Image courtesy of Matthew Naedel.
