Larger blue flag iris, with its striking flowers and attractive foliage, is lovely in the bog garden, especially when reflected in water. This native North American iris naturalizes along marshes, wet ditches or boggy meadows, and it also adapts well to garden soils. In June, its purple-blue flowers bloom above strap-shaped leaves. Prefers moist soil and will grow in shallow water.
Tuberous roots, or rhizomes, are poisonous when eaten.