Hi Alex
It would get you part way to create a Category in your Plant Lists for daylily seedlings.
But I think the photo in that list would be whatever the Plant database itself decides is the best photo for that plant (and it changes from time to time, I think based on how many thumbs each photo gets.
Your Profile
There are XX plants in ARosebulsh's Plant List
access your Lists Control Panel.
look far left ... "Manage categories"
create a category
I'm afraid I don't remember and don't see how to put a plant into two categories, or indeed where to assign a plant to one category or another!
And you still would not have the option of selecting a specific photo to display.
You could set up a blog entry that was mostly a series of links to the daylilies you wanted to document as seedlings, and then paste in your private photo of the seedlings. But you could also do that in a Word doc.
P.S. I'm sure your photos of daylily seedlings would be widely appreciated if you added them to the plant database, or wrote an article showing differences between seedlings of different daylily types.
By the way - someone once said that they wanted small-diameter, tall, clear tubes for seedlings of SOME slow-growing plant. Might those have been daylilies? I've been saving tall skinny water bottles when I see them discarded: 2.4 inch diameter, 7 inches tall.