I've had oodles of seed pods on my ditch lilies, and have never had one reach maturity, after many years. I think I dabbed pollen on them once, just because I was walking past them with some pollen, but nothing came of it. The bees are the ones that seem to make all of those pods start to grow, at least for me. I started thinking it was the most fertile daylily ever, until I ended up with zero seeds every year!