Some large edges will hang up anywhere no matter what the weather, its a flaw within the daylily. It depends on how the edge is formed in the bud, it has to be folded just right in order to open without hanging. I had a seedling three years ago I wanted to register but I had to pull about 30% of the blooms open so I would not put it on the market. Cool nights does make the hanging worse so tinks flower may not hang up durning rebloom because of the warmer weather.
Another nice bloom tink.
