LOL, Juli!
Thank you Fred and Gardenglory.
In my garden, daylilies increase faster than irises. Seeds don't come true on irises either, so all the increases are off the one origional plant. I wold say a hybridizer would grow an iris for at least four years before getting anything. Irises are coming a long way, a lot of new colors and forms.
I think supply and demand is the big factor, and you are probably right. I wonder if the daylily hybridizers introduce theirs sooner, and therefore have less to introduce. Maybe the iris hybridizers have more plants to introduce when they first introduce them?
Someone suggested I contact Mr. Maryott, as he has hybridized both?