You’ll want to cut about 3-5cm off to get rid of the dry ends so it’s easier for your peonies to drink their water. If there are any leaves that end up sitting in the water of your vase ...

And it’s best to cut peonies at a certain stage for longest bloom time in the vase. If they're already open, they'll last only a few days. Instead, snip them when they're at the marshmallow ...