|has a light blue to deep violet,
rarely white, flower. The sepals are spreading with darker blue to purple
veins with a light yellow pubescent signal. Southern blue flag iris flowers
in late spring. Flowers are a one- to two-flowered inflorescence on a
barely- or non-branching stem. The plants are up to two feet tall. The
weakly arching green leaves are two to three feet long and are burgundy
colored at the base. The leaves arise from shallowly rooted, large,
branching rhizomes that can form large clumps.
virginica var. virginica is commonly found growing in wet ditches, swamps,
wet meadows, marshes, stream edges and lake and pond shores.