Regulated Act: Alberta Weed Control Act
Provincial Designation: Prohibited Noxious
Colour: Pink
Latin Name: Centaurea nigra
Fact Sheet1: Click Here to View/Download PDF
![Knapweed Black A close up of the flowers of knapweed, black.](https://abinvasives.ca/wp-content/uploads/bb-plugin/cache/Knapweed-Black--square-be23657031e5a45a9c850d0cb4c81b24-5eea4e20a628a.jpg)
![Knapweed Black A close up of the flowers of knapweed, black.](https://abinvasives.ca/wp-content/uploads/bb-plugin/cache/Knapweed-Black--square-be23657031e5a45a9c850d0cb4c81b24-5eea4e20a628a.jpg)
Regulated Act: Alberta Weed Control Act
Provincial Designation: Prohibited Noxious
Colour: Pink
Latin Name: Centaurea nigra
Fact Sheet1: Click Here to View/Download PDF