Normally I wouldn't recommend Walmart for much but we had this Iris pop up unexpectedly in our garden a couple of years ago (still don't know where it came from) and it is *gorgeous*. Walmart is selling them 3 roots for 5.97.
To see it, go to:
It's growing like crazy, too, and it blooms beautifully. I'm going to be able to divide my original clump this year and make more.