Maurice, interesting concept, but that friend I mentioned who lives west of Gainesville, FL ... she gets hotter earlier in the season and it lasts longer at her place. In the summer she will top out at 92-94 while here on the beach we seldom get over 85. With your premise, I should be able to grow some dormants and she should not. Not true! That's why I truly believe that cold helps. Our soil temperatures will reach 81-82 during the summer. My friend's soil will get over 90 degrees where it gets full sun. When I have a daylily that isn't happy down here and it is going grassy, I send it to her. Usually it will straighten up and grow up there. I'm beachside in Volusia County (Central FL) and she is in Dixie County in north FL.
