Cut peonies when the buds reach what growers call the “marshmallow stage,” a day or two before the flower opens. At this point, the bud feels like a soft marshmallow when you gently squeeze it between your fingers, and you can see the petal color showing through. Cut too early and the bud may never open indoors. Cut too late and the bloom will shatter within a day or two in the vase.
How to Identify the Marshmallow Stage
A peony bud goes through several visible phases. It starts as a hard, marble-like ball, then gradually softens over a few days as the petals inside expand against the green sepals. The marshmallow stage sits right in the sweet spot: the bud gives slightly under gentle finger pressure (like pressing a marshmallow), and color is clearly visible between the sepals. If you squeeze and it still feels firm like a golf ball, it’s too early. If the petals are already peeling back on their own, you’ve waited a bit too long for the longest vase life.
For double peonies, which have dense layers of petals, you generally want to cut when the bud is slightly softer than you might expect. These heavy blooms need enough internal development to push all those petals open without the help of the plant’s root system. Single and semi-double varieties have fewer petals and can be cut a touch firmer since they need less energy to open fully.
Best Time of Day to Cut
Early morning is ideal. The stems are fully hydrated from the cooler overnight hours, and sugars produced during the previous day’s photosynthesis are still concentrated in the stems. Cutting in the heat of the afternoon means the plant is already stressed from water loss, and your blooms will start their vase life at a disadvantage. If morning isn’t possible, early evening after temperatures drop is the next best option.
How to Make the Cut
Use sharp, clean pruners or floral shears and cut the stem at a 45-degree angle. The angled cut increases the surface area for water uptake and prevents the stem from sitting flat against the bottom of the vase, which would block absorption. Cut stems to whatever length you need for your arrangement, but leave at least two or three sets of leaves on the plant so it can continue feeding the root system for next year’s blooms.
Disinfect your cutting tools before you start, especially if you’ve used them on other plants. A quick wipe with rubbing alcohol or a diluted bleach solution helps prevent the spread of botrytis, a fungal disease that peonies are particularly prone to. Dirty tools can introduce pathogens directly into the fresh-cut stem.
Dealing With Ants
Finding ants crawling over your peony buds is completely normal. Peonies produce a sugary nectar on the outside of their buds, and ants feed on it. It’s a mutual relationship: the ants get food, and in return they tend to ward off other insects that might damage the bloom. But you obviously don’t want ants in your house.
The simplest fix is to hold each cut stem upside down and give it a firm shake outdoors. For any stragglers, a gentle rinse under cool water does the job. Cutting at the marshmallow stage actually helps here, since the tight bud gives ants fewer places to hide compared to an open flower.
Conditioning After Cutting
Once you bring stems inside, recut them under water at a 45-degree angle. This prevents air bubbles from forming in the stem, which can block water flow and cause the bloom to wilt prematurely. Place the stems in clean water with a packet of floral preservative. These preservatives typically contain sugar (to feed the bloom) and an antibacterial agent (to keep the water clean). Research on cut peonies shows that preservative-treated stems maintain their blooms longer than stems placed in plain water, particularly after the first week in the vase.
If your buds are still fairly tight after cutting, place them in warm water in a warm room to encourage opening. If they’re further along in development, do the opposite: keep them in a cool room with minimal light to slow things down. This flexibility is one of the big advantages of cutting at the right stage.
Storing Peonies for Later Use
One of the best things about peonies is that you can store cut buds in the refrigerator for weeks and open them on your schedule. The American Peony Society recommends storing them as close to 33°F as possible. You have two options for storage.
Wet storage means placing freshly cut stems directly in water and keeping them in a cool, dark location like a refrigerator. Dry storage means wrapping the stems in newspaper or paper towels, sliding them into a plastic bag (leaving the end slightly open), and laying them flat in the fridge. Dry storage is the method commercial growers use to hold peonies for several weeks.
When you’re ready to use stored peonies, recut the stems under water, place them in warm water with floral preservative, and let them sit at room temperature. Most buds will open within 24 to 48 hours. Buds that were stored longer or cut on the firmer side may take a bit more time.
How Long Peonies Last in a Vase
A well-harvested peony cut at the marshmallow stage and properly conditioned will typically last 7 to 10 days in a vase, sometimes longer in a cool room. Research on three peony cultivars found that stems in plain water began showing significant decline around days 9 to 12 depending on the variety, while stems treated with preservative solutions maintained better condition through those same time points. Changing the water every two days and retrimming the stems each time makes a noticeable difference.
Keep your arrangement out of direct sunlight and away from fruit bowls. Ripening fruit releases ethylene gas, which accelerates petal drop in cut flowers. A cool spot in the house, away from heating vents, will extend the show by several days.