Should I re-cut the stems when I place them in water?- Flowers 101

Yes, always, every stem should be re-cut after they have been out of water. When the flower is out of water, even for a minute or two a callous starts to form on the end of the stem cutting off the water supply to the blossom. This is a natural reaction for the flower, allowing it to prevent dehydration for a short period of time. After the callous starts to form we need to cut the stem (about 1 inch) at the bottom and place it directly into water.