i had an experience with Bishop's Weed, and I think that the same thing happened with your monkey grass.....When allowed to go to seed... the "new" plants revert to the original color forms, AND their rampant growth! They soon become a real pest !and are hard to eradicate, as well. Thankfully, your space age iris won't do that! I have no "space-agers(yet !)", in fact most of mine are still in the "horse-and-buggy" era, but I have noticed a lot of "different", or "deformed", or "strange" blooms, over the years. Most, probably weather related, some ,maybe from chemical exposure, and some ."just because"! Point is, nature is full of suprises, and just because we try to changr it( in this case by hybridizing), we're not going to eliminate them. I think most "space -agers", MOST of the time, appear ALMOST the same. But NOT always, just like a lot of things, there will be differences, maybe small, and maybe great, but, differences, just the same. So my advise...enjoy the differences!...they're part of what makes the iris so interesting(to me at least)..Arlyn