Della, if you can take some empirical data of your pollen-less bloom longevity per cultivar, I'd be very interested. Thinking more now with the single cultivar that I grow, I'm pretty sure flowers do last longer, but maybe only twice as long. I'll have to record relevant data, too.
It's hard to believe more hybridizers aren't working with pollen-less lilies that last so long. One would think it would be highly sought after by florists. Here in Minnesota, it's a major project with hybridizer Tim Z. He is trying to breed the trait into larger flowers, so far with some success.
