Dan Hanson said in one of his videos that only his seedlings get shade, once they are mature they have to be able to withstand the elements on their own, part of his tough love method of growing "garden hardy" daylilies, that is my term not his, but you get the point. So for people needing heat tolerant daylilies that might be something to keep in mind as he said in the video, are you going to be growing your daylilies under shade cloth?