Iris pseudacorus

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Legend for Species Pages

Yellow Flag

Iris pseudacorus L.
  • ANPC Rank –
  • Moss, Flora of Alberta – No
  • Global Invasive Species Database – Yes[1]
  • NatureServe Rank – High
  • Haber, Upland – No
  • Haber, Wetland – Minor
  • CWF, Status & Invasive Range – Low, Great Lakes, ON, BC, SK, AB, MB, QC, NF, NB, NS
  • Alberta Revegetation Guidelines – No
  • The Nature Conservancy – Yes, w/ ESA
  • CBCN – Potential
  • AB Weed – Prohibited Noxious


Reported for AB, +9 other provinces, forms dense stands, irritating on contact, poisonous to cattle

[2] Link to USDA Plants Profile for Iris pseudacorus L. paleyellow iris

[3] Link to ISSG Global Invasive Species Database entry for Iris pseudacorus L.

[4] Link to NatureServe I-Rank information for Iris pseudacorus - L. Yellow Iris

Briutton and Brown (1913)