A great bourbon is fragrant, decadent, and wholly joyful to experience. Unless you greedily have much too much. Then you wake up thirsty, head crowded, and really don't want to look at a bourbon bottle for a long, long time. I experienced this once about four years ago, and will never do it again.
Just because you can have a lot of something doesn't mean you should. That's a basic truth in life that irises (and everything in the mint family) haven't grasped, and neither have many people who grow them. These things were about to launch forward into the front yard because no one had thinned the herd in the past few years, and they just kept propagating like the soil whores they are.
More on gardening plans to follow.