My Fireball bloom went crispy on me the other day too. We only had upper 90s that day...something like 96F. It was a perfect bloom in the morning and by afternoon it was crispy. I've only ever seen that twice before (on Mayla & Fireball), but the blooms were on just planted hardies, so I figured that it was not yet use to the heat. I don't think I've seen any tropical lily blooms do that, yet...