Will an Iris hold up to wind in a bog? I have a huge pot of Iris's on a shelf in the middle of my pond. It blocks the view of stuff behind it. Was wanting to put some in my bog next year if it will be strong enough against wind.
Yep they need dividing or they will take over your whole pond and the bigger they get the harder to divide. If you don't want them to take over your whole bog you can dig a hole and put landscape fabric in there to contain them. You'll have to divide them eventually as if they were in a pot which you could use also and bury that instead of the fabric. Just make sure holes in pots. Also be sure and cut off the seed pods before they go to seed or you will have them everywhere. Oh yes I know cuz I had them on land in one area and the seeds are still coming up after several years of removing them from that spot.