Q: We have some bearded iris that have spread out from their original planted spot and now form a circle with an empty spot in the middle. Can we divide them and replant them back into the spot they came from? It’s the best location to see them from between some bushes. A: Yes, you can divide them, and now is a good time to do it. Generally, we divide perennials in the fall or spring when they’re dormant, but irises are an exception to the rule. They have large rhizomes that store food and water, allowing them to be moved in the summer heat without too much of a problem. Some people divide irises every five years or so, while others have never done so at all. They’re easy to dig up because the horizontal stem called the rhizome is at or near the surface, and there are only …