Southern Blue Flag Iris (Iris virginica var. shrevei) is a water-loving perennial that thrives in wet climates — it can even grow in up to 6 inches of water! Native to inland marshes and wetlands from as far west as Texas, to the Gulf Coast and Mississippi River Basin, all the way through the Mid-Atlantic to Ontario, this resilient native species is highly adaptable. Southern Blue Flag Iris is a beautiful, hardy choice for rain gardens, pond edges, lakeside landscapes, and any other area where wildflowers may find themselves waterlogged. With long-lasting blooms, Southern Blue Flag looks lovely alongside other wildflowers or nestled in a cut flower bouquet.