I would highly recommend NOT buying iris using this method. The survival rate is roughly 50% and the correct cultivar is roughly 20%. I did a survey about 5 years ago with iris bought at Walmart, Home Depot, Lowes, and Kmart (I think there was another location, but it escapes me). My daughter worked for one of the locations and I had a disagreement with her general manager. He was trying to make a case for this being viable and correct as to cultivar. I showed he was in error. He said later that he was unaware of that situation, but that his management makes the decisions across the board for his company. The word back was that the item WAS an iris.
The manager though was not happy with my results, so he asked me to do it again. He gave me nine more to do and he took the same nine cultivars. I supplied the pots and medium, and he grew his nine and me mine. Last year (their first year) the did not bloom for me. I am now down to three left (two of which should bloom this year). He did get one to bloom last year (it was wrong) and has three others left. The attrition rate was worse than the first time. He has said that it would not matter what the outcome would be as it will not change this way of doing business as most of the general public don't care about names, just if it is pretty. Which says, if you DO care about names, you would buy from a viable vendor who would replace a lost of wrong cultivar.
Now I will step off of the soap box.
