crocosmia flower storage
The article on the website states to keep the fresh-cut stems in 100 deg F for 48 hours - how do you keep water at 100 deg F?
You would use the warm water as you cut the flowers, then place in a dark location. Yes, the water temp will change.
This is a common technique used with cut flowers.
Also adding a floral preservative to the water will aid in cut flowers lasting.