I bought my iris four years ago. The first two years they didn't bloom at all. Last year they attempted to bloom in the fall without sending up the stalk the flower is on. The blooms were down in the leaves where they couldn't open up very well. It was weird! This year, though, they must like our new home as much as I do, because they are blooming beautifully! I wish I had bothered to keep track of the names of them. This one is so dark purple it's almost black:
I call this one purple splash, for lack of a real name:

And these are the ones that were already here when we moved in. They were such a pleasant surprise! I fully expected them to be that plain, light purple that all iris seem to revert to over time. They are so pretty! Once they quit blooming I will clean out the bed and separate them.