The only change I can report is a negative one (sort of like how your double (first seedling) is going in the opposite direction - from something desirable (mostly or full double) to worse (less double)).
This was a seedling that had maiden bloom in 2015. Iirc (I was swamped and didn't take careful notes) most of the (very few) blooms on the first scape were singles, but then it rebloomed with poly blooms. The bloom did not open flat (let alone recurved), but it did open, and it was a sort of a pale peachy yellow in color.
6-19-2015 bloom
This year this seedling has been a massive disappointment. All (or almost all) of the buds look like they would have produced poly blooms, but almost all of them shriveled up and dropped off! I finally had my first bloom yesterday (I think this was on a third scape in the small clump), and the color was not the same (more yellow, maybe a yellow polychrome, than previously), the bloom was smaller (than I recall), it scarcely opened, AND the pistil was malformed, some anthers were fused, and there was apparently NO POLLEN produced!
(I had the bloom protected from bees so they could not carry off the pollen.)
(yes, I tried harvesting the anthers... one filament looked like it was stuck to the petal... and I damaged the petals)
7-13-16 bloom
Other than that... I don't have any changelings to report, largely because I don't keep seedlings around for 3 years, and those that I do, mostly look the same. While you may be correct about keeping seedlings around for a few years to see what they can do, I have very limited space for seedlings here. I am mostly trying for polys, and if a seedling shows no hint of producing same (not even one bloom), then out it goes. (If it produces at least one bloom, then I have some evidence that there may be some poly genes in there, and maybe I can bring them out in subsequent generations.) If a seedling color is muddy, out it goes; if a seedling bloom won't open well, out it goes; if the seedling has (too much) rust, out it goes. And so on - with possible exceptions being made for otherwise unusual or interesting or just "something about it that I like" traits.
As an example of a "possible exception"... I have one volunteer seedling that had maiden bloom this season which is showing midrib cresting on some blooms... where the heck did that come from? The bloom size is small and the bloom opens poorly, the cresting is variable from none to a little to all 3 midribs, but maybe it is something I can work with, so it gets to stay for another year.
6-11-16 bloom, evening;
GAH! WHAT IS IT?!! (My first thought was that maybe this was a fused bloom... now I'm not so sure...
or maybe it *was* fused, but there is also cresting going on...)
6-29-16 bloom, evening, no cresting
7-13-16 bloom, midrib cresting on all 3 petals
(yes, I tried harvesting the anthers... one filament looked like it was stuck to the petal... and I damaged the petals)
