Iris pseudacorus - Yellow flag

Yellow flag (Iris pseudacorus) is a perennial herb of marshes, ditches, and shallow water across Europe, Asia, and North Africa. All parts, especially the rhizome, contain an acrid irritant resin, and the seeds are edible only when well roasted — raw seeds or root can cause vomiting and diarrhoea.¹

Inputs

• Hardiness zone 5¹
• Hardiness zone 6¹
• Hardiness zone 7¹
• Hardiness zone 8¹
• Full sun¹
• Semi-shade¹
• Moist soil¹
• Wet soil¹

Outputs

• Human food¹
• Medicinal use¹
• Dye¹

Type

• Herb
• Perennial

Functions

• Attracting bees¹
• Attracting butterflies¹

Footnotes

1. Iris pseudacorus | Plants for a Future ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴