Iris pseudacorus

Yellow Flag

Erect stems and leaves. Leaves 1 in. wide, stiff. Flowers numerous, bright yellow, with brown marks outlining crest area, petals narrow near middle. Grows in waterways and other wet areas throughout North America at low elevations. A European native used as a symbol for Louis VII, called fleur de Louis, now a design known as fleur-de-lis. Invasive weed of wetlands.

  • Rarity: Common
  • Flowering Time: Early Summer
  • Life Cycle: Perennial
  • Height: 1--3 feet
  • Habitat: Bog/Fen/Wetland, Lake/Pond
  • Found In: Olympic Np, West Gorge, N Cascades Np
  • Native: No