Hey, I've got a few tricks up my sleeve to keep those peony flowers looking their best for as long as possible. Here's what I do: 1. Cut the stem at least 45 degrees and take off the leaves that are going to be underwater. 2. Grab a flower vase you like and add some liquid plant food to the soil. I usually use water, 'cause it's a breeze and it looks great. Just remember to change the water every 2-3 days and find a spot that doesn't get a lot of sunlight — that way you can avoid weed growth.