Potting is a holding area for me until the beds are ready. And sometimes until I have more of my orders in so I can arrange the planting better. It is hard to plant some here and there while waiting for the ones that will be growing next to them to arrive because you don't know if the space requirements will be right. At least it is for me. If I plan space for a normal rhizome, and then get sent two or three, then I end up crowding the neighboring iris. I would love to just be able to space the iris really far apart but don't have the garden room for that.