This is the first year I have paid any attention to summer dormancy, I guess I previously just thought the plant had died. I like for the foliage to look green and healthy all the time, not turning brown and dying in hot weather. I wish there was a list of cultivars that had this trait. I think it is something to be considered when hybridizing also. I have read that daylilies that have a year or two of very successful blooming will sometimes experience a year of summer dormancy, so I guess in that case they have earned their rest period. Those slackers that have not performed extremely well however should not be taking a break in my opinion, I have some that just bloomed once then no re-bloom and then went into summer dormancy. I am waiting to see if they re-bloom now.