Splitting up my irisis
If I split my irisis now because of over crowding, when can I re plant them?
Replant them immediately if you there is to be any hope of bloom later this summer. If you don't care about that, rhizomes may be stored. Here are 2 articles that I hope answer your questions. https://www.gardeningknowhow.com/ornamental/bulbs/iris/dividing-transplanting-iris.htm