Centaurea repens

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Legend for Species Pages

Russian Knapweed

Rhaponticum repens (L.) Hidalgo


Acroptilon picris (Pallas ex Willdenow) C. A. Meyer

Acroptilon repens (L.) de Candolle

Centaurea picris Pallas ex Willd.

Centaurea repens L.

  • Moss, Flora of Alberta – Occasional
  • Global Invasive Species Database – Seriously Invasive
  • NatureServe Rank – High
  • Haber, Upland – No
  • Haber, Wetland – No
  • CWF, Status & Invasive Range – Potential, BC, SK, AB, MB, ON
  • Alberta Revegetation Guidelines –
  • The Nature Conservancy – Yes, w/ ESA
  • CBCN – No
  • AB Weed – Prohibited Noxious


[1] Link to Bugwood Invasipedia for extensive information on biology, ecology, and management of Rhaponticum repens.

Acrorepe XID Acroptilon repens1.jpg
Acrorepe XID Acroptilon repens2.jpg
Acrorepe XID Acroptilon repens3.jpg


Roché C.T., and B.F. Roché Jr. 2000. Identification of Knapweeds and Starthistles in the Pacific Northwest: PNW432. Pacific Northwest Extension Publication. 22 pp. [2]

Alberta Invasive Plants Council factsheet: https://www.invasiveplants.ab.ca/Downloads/FS-RussianKnapweed.pdf

Map references

Map data for A. repens

sample: Map data for T. ramosissima