Any suggestions for lilies (including where I can order them from) that can survive/thrive in South Florida (Zone 10)?
Lilies that can survive in Zone 10
Not a lilium, but try http://davesgarden.com/guides/pf/go/699/ and
http://davesgarden.com/guides/articles/view/2866/
Check out Crinums and Hymenocalis and possibly toad liliy
All are called lilies even if their are not true lilies.
I have Asiatics, OTs, and Orientals comming back from last year in my zone 10 garden, but my zone 10 doesn't get the summer rains or humidity that you get. They won't thrive like they do in more temperate zones, but they will be good for a few years. If you're determined, you can dig and chill the bulbs every winter.