Years ago I was told that in my heat I couldn't expect daylilies to be colorfast and/or sunfast. This turned into my goal. To get daylilies that look decent towards the end of the day in 95 plus degree temperatures. Over 95 seems to be the temperature that many otherwise heat hardy daylilies will begin to wimp out. This year the temps went up into the 90's beginning the first of May. It has been a consistent 99 degrees for days on end, with temperatures now going into the triple digits. Today was 107 (heat index 113 plus). Most of my daylilies are bloomed out by now, but these 3 looked pretty good at 5PM when I took their picture. The temperature had dropped to 105 by then.
This daylily was in the heat but got protection from the full sun after 2PM when it went into the shade. It's a new daylily for me, so don't know how it will do next year or in full all day sun but the color and substance held well in part sun in the high heat:
Sweetest Name I Know:
Although colors are more pronounced in cooler weather, I think the amber/gold color of this daylily looks great for having been in the blazing sun all day long:
Finally another first year plant for me. Dale Hensley has some remarkable reds and aside from some singeing on an outer petal, this dark red held up remarkably well in full sun and 107 degree heat: