I used to do a lot of color scheme planning, but finally realized that you really have to see the plant in bloom first to know what is blooming at the same time. My ideal is to grow everything together at first, then when it needs to be divided move it to a more planned bed. Well, that is my ideal...But actually I am slowly finding irises that go with my red orange poppies and bloom at the same time. Superstition is one of them.