Welcome, Julie! Love your patio.
I went to the AHS Daylily Cultivar Search page and did an advanced search for: "small", "single", "evergreen", "very fragrant". I got 31 daylilies that matched, but I don't have any of them, so can't comment on how they perform.
Some daylilies that are listed as fragrant are not fragrant enough to smell unless one is right on top of them. But then again, it could all be in the smeller
Link to AHS advanced search:
http://www.daylilydatabase.org...
