Mattio,
Now maybe I am way off base here, but I got the impression that maybe you think planting daylily seed will result in a duplicate of the plant the seed came from? Daylily seed do not come true, in other words the plant you get from seed may be nothing like the plant the seed came from.
From the questions you asked, I would suggest growing a large bed of daylilies for a year or two at least, before deciding to make it a business.
Search out some daylily farms in your area, go visit them, talk with the owners, get a feel for what it is like to be in the daylily business.
