Wes-- sorry to read you lost those daylilies. Weather is tricky. I lose more to heat and others to cold. Were they in the ground? Just a suggestion that probably is made alot. Picking a couple you really like and putting them in really large pots and bring them in. Plastic is better than Terra cotta. Terra cotta holds water different and can make plants hotter in summer and colder than normal in winter. Outside dryer vents surrounding areas can be warmer too. Just a thought maybe repetitive. May joy surround you today!