@petruske
In a way you can add NOIDs and unregistered daylilies, but not so it is as useful as with registered plants.
I just added a photo to my list so you could look at it and see if that would be of any use to you.
First you will need to add the generic entry for Hemerocallis. Then you will have to add any notes and photos over in the notes section. You can actually add events also, but you have to make sure you include a garden name or location or something to let you know what plant the event was for. I can see it would have some very limited use, but not sure it would be worth the trouble for you. Look at my list and bring it up by Genus: Hemerocallis, the first entry you will see then should be for NOIDs and such. Tmail me if that looks like something you might want to try, if not let me know and I will remove that photo, which by the way was a noid but I found out it was actually Carlotta! I am sure if you played around with it you might find more imaginative ways than I have shown to customize it more to your needs.