Commonly called the Flag Iris, it forms large clumps of foliage in damp areas of the garden and can naturalize on the edges of ponds and streams. Its yellow flowers are produced in late spring and early summer.

Commonly called the Flag Iris, it forms large clumps of foliage in damp areas of the garden and can naturalize on the edges of ponds and streams. Its yellow flowers are produced in late spring and early summer.