" I grabbed the closest caterer and sent him for a cup of boiling hot water from the kitchen. I pulled out the wilting hydrangeas one by one, recruit their stems, dipped them into the boiling water for about thirty seconds, and then placed them back into the arrangements.
It took a few minutes, but this trick would perk the flowers right up, at least for the next hour or so. Didn't people know hydrangeas were the absolute most finicky flowers? I also grabbed some floral wire to prop up some of the worst offenders. At least they weren't dead. There was no resurrecting a bloom once it had completely wilted. "

― , Without a Hitch