Late summer early fall is a great time to divide Iris. You can also transplant this time of year. They want at least six hours of sunlight and well drained soil. They don’t like to be planted very deeply. lots of people‘s iris after five years or so stop blooming. It’s a good idea to divide them to keep the roots from getting too tight which prevents blooming. I can’t always respond to comments so for those of you that are experienced gardeners, please jump in and help as much as you can. I am a