Thanks! Yes, the mowed local-park ones were, I think, Stellas ... and the youtube video calls the daylilies "repeat bloomers" (though I took that to mean 'rebloomers'). I was just browsing to see general forms, and his mention of cutting back caught me by surprise ...
... very glad to know i don't have to cut them all back!
http://www.youtube.com/watch?v...