I bought some dark purple Nicotiana to blend in with some of the purple-toned Iris today. The lime green version self-sows all over the place, but the purple doesn't seem to for me. The nursery had a couple types of large-flowered Allium, so I got a package of one of them, and (another!) package of dutch Iris. I have no idea where these things will go, but on the plus side..... I got 4 Iris in the ground this morning!