I've read they need to be kept separate or one iris will dominate like that. We saw a show garden/nursery near Bloomington, IL and each group of iris of the same type had 1-2 feet of space with mulch between the next type. Reply
I've read they need to be kept separate or one iris will dominate like that. We saw a show garden/nursery near Bloomington, IL and each group of iris of the same type had 1-2 feet of space with mulch between the next type.