Thank you all for the suggestions so far. I have learned that daylilies are not true from seed, and I am ok with that. Although any seeds produced will not be exactly like the parent, they will be from the line that I collected with my father. I would love to ensure that the current plant thrives and could potentially be divided, but I'm nervous about hurting the plant in that process. Seeds would give me some breathing room in case my original plant doesn't make it for whatever reason.
I'm wondering if maybe weather conditions are hurting the pods? I've read that too much humidity/moisture can rot them, or that high temps may kill them? It's been raining almost every day, heavy humidity, and about 85 for a high. This plant is originally from WI, so maybe it's not meant to handle these conditions. I may bring it inside and place it under a grow lamp to see if I can get some seeds to form.
I don't know the ploidy of mine (and I don't think there's anyway to tell?); is it possible to buy daylilies of known ploidy somewhere, like at a greenhouse? I'd buy different kids to try to cross them with mine, if I can get ahold of them.
Thanks everyone!