confused--iris growth pattern
I'm having issues on how to arrange some irises. I've read that they grow away from the rhizome in front of existing fans; however, the irises I planted a couple months ago are putting up new fans every which-way...to the side, in front of and behind the existing fans. A barndance iris is even showing a new fan about 5" behind the existing fan. It would be an academic question, but I'm planning on moving a few before winter sets in and I want to arrange them appropriately. Are my irises weird, are each different, do they sort themselves out in a predictable pattern after the first couple months. Clarification is appreciated. Thanks.