Spring is the ideal time to prune tree peony.
With these easy tips, you can maintain the finest appearance for your adult tree peony:
- Remove any dead wood to get to a healthy bud first.
- Cut a few stems back to fresh buds at soil level, or to within 15 cm of the ground, to improve the shape of your tree peony or reduce its size.
- Leggy stems should be pruned by a third to encourage plants to grow more bushy growth.
- By cutting one or two old stems all the way down to the ground, elderly, neglected plants can be revived. To lessen the damage, spread this out across a number of years.
These pointers should help you maintain your tree peony in top condition so that it can continue to provide you with a stunning spring display for many years to come.
Should I trim my tree peony back?
Herbaceous peonies are types of peonies that don’t have woody stems and die back to the ground each winter before sprouting new branches in the spring. They have been around for a very long time, have a very long lifespan, and produce gorgeous blooms, therefore I believe it is safe to say that they are the most popular variety of peony produced in North American gardens.
With the exception of their woody stem, tree peonies and herbaceous peonies exhibit many similarities. They resemble miniature trees. The woody stems survive the winter even when the foliage falls off. Then, from that woody stem, buds and leaves emerge in the spring. After a little while, enormous peony blooms appear:
Each bloom on my plant, which is pretty common, is roughly 10 (24 cm) wide and almost always double in size (i.e. they have lots of petals).
Peonies in general, including tree peonies, come in a variety of hues, including white, pink, red, and even burgundy red. The less frequent but very stunning cream to yellow blooms are incredibly beautiful.
In the majority of tree peony blooms, the stigma and pollen-coated anthers are visible, serving as the flower’s reproductive organs (if that recalls you of high school biology class):
When in flower, tree peonies are magnificent plants, but the leaves are still lovely after the blossoms have faded.
Seed heads will develop if the old blooms aren’t removed. These are still on because they catch my attention. They stay put all winter, and come spring, they’re still there, looking worse for wear, right next to the budding buds and new greenery. At this stage, trimming of some kind is necessary, but what kind? Are they pruned similarly to roses?
No, is the response. Tree peonies grow slowly, so even if you severely prune them, they won’t suddenly sprout new growth as a rose bush would.
The only thing you typically want to cut from tree peony is anything that is dead. The stalks that held up the blossoms from the previous year are visible as “dead sections” on the image below (you can make out the remnants of a seed head on the left side of the picture). Because there is no new growth emerging from them, you can tell they are dead. The locations where this tree peony needs to be pruned are marked with red circles:
Simply use secateurs and cut off the dead wood at those locations to complete the task.
The larger branches should also be cut at the same time if any of them died off over the winter, which can occasionally happen.
You are done with the pruning now. You could cut back some of the branches on an old, big tree peony to make it a little smaller (to just above a growth node, like I showed you on roses), but be careful how much you cut because it will take a long time for it to grow back to that size.
A clear view of the stunning new blossoms from this year is the payoff for clearing away those few dead bits. Enjoy!
Can a peony tree be trimmed?
The ideal time to prune a mature tree peony is in the early spring. In the zone 6 area below, the best time to do this is after the buds have started to swell but before new growth has started. Pruning can be done in the fall or winter in zones 7 and above when there is little risk of winter damage.
Once the buds have started to swell a bit, prune tree peony. In this manner, it is clear whether a bud is alive or not. This often happens in late March in New England.
A pair of bypass pruners and a small pruning saw are suggested tools. Ensure that they are precise!
Cut off the branch at the nearest live bud when pruning a branch that still contains some healthy buds. Just above the first living bud, the incision should be made with an angle that slopes away from the bud. This makes it easier for water to flow off and promotes faster healing.
shoddy pruning cut The dead wood above the bud is sticking out too far. This does not encourage effective recovery.
Examine the plant’s base after you’ve cut back the upper branches. Spindly inner growth frequently passes away, and this dead wood needs to be removed.
After all the dead wood has been taken out, check the plant for any small, spindly growth. These incredibly tiny side branches should be cut off if the plant is healthy and growing nicely. They are often located within the plant. They won’t grow flowers and only obstruct airflow.
Finally, eliminate all pruning from the garden since they can contain fungus spores.
How is a peony tree maintained?
No garden should be without the majestic, long-lasting woody shrubs known as tree peonies. Some types have plants that can produce fragrant flowers up to 10 inches in diameter and grow to heights of 45. Tree peonies are hardy from Zones 4 to 8, do well in the Northeast and Midwest, and flourish in climates with cold winters and hot summers. Tree peonies can be forced into dormancy by gardening in Zone 9: remove all foliage in November, leaving the woody stems, and do not water or fertilize. Hopefully, this will cause the plant to develop blossom buds.
Tree peonies may take three years to develop and begin blooming, so they are not a plant for the impatient gardener. Also keep in mind that it could take several seasons for a new plant’s flowers to bloom to their full potential. Having said that, there is nothing quite like a Tree Peony in full bloom; it is a breathtaking sight.
Before they blossom, Tree Peonies require some time to acclimate; it’s not uncommon for a plant to hold off until its third spring. Additionally, the first spring following planting, Tree Peonies may take longer to emerge from dormancy. Although your plant might appear to be dead while its neighbors are coming to life, it will soon reawaken.
Light/Watering: Flowers need some light protection from the sweltering afternoon sun. In China and Japan, little parasols are used to screen the plants from the sun. Plant tree peonies where they will be shielded from the winter and summer winds that can dry them out. Once established, Tree Peonies are exceptionally drought tolerant. Avoid overwatering plants, and keep them away from automatic irrigation systems. Prior to heavily watering, allow the soil to dry to a pH of 4. The roots will be killed by excessive watering, which is a common cause of failure.
Tree peonies require fertilized soil with a pH that is somewhat above neutral or close to neutral. When planting, add a few handfuls of lime if your soil is acidic. Remove the green plastic ribbon that is wrapped around the stem’s main portion before planting the plant at the depth specified by the ribbon. In order to stimulate the scion to develop its own roots if the ribbon has become dislodged, plant the top of the graft union, which is visible as a bulge on the main stem, approximately 46 below the soil’s surface. In the spring, topdress plants with an inch of aged manure or compost. During the growing season, foliar feeding with fish emulsion is beneficial.
Pests/diseases: On rare cases, you might discover a boring insect-caused hole in the wooden stem. Using a thin wire or by just cutting out the troublesome part, you might be able to kill the larva in the tunnel. Like Herbaceous Peonies, Tree Peonies may contract fungal infections that result in leaf blackening and wilting. As soon as unhealthy foliage is seen, it should be removed. In the fall, make sure to pick up any plant pieces that have fallen. Spray with a fungicide early in the spring and repeat the treatments for a few weeks if fungal diseases start to be an issue. Deadhead flowers regularly and avoid letting dropped petals get stuck in the plant or on the ground.
Companions for Tree Peonies are Hellebores, Alchemilla, Leucojum, Epimedium, and Siberian Irises. Underplant with bulbs that bloom in the spring if your plants have a tendency to be leggy.
Pruning: Unlike their herbaceous siblings, Tree Peonies should never be cut back to the ground. After plants have flowered, remove any broken or damaged stems by pruning. Once your plant has matured and is thriving, you might wish to make a small opening in the center to promote flowering on the taller stems and improve airflow. When Tree Peonies are grafted into Herbaceous Peony roots, the rootstock will occasionally send up a shoot from the plant’s base. These need to be taken out right away.
Dividing/Transplanting: Tree Peonies do not require division, and it is impossible to do it with numerous plants. When dormant, young plants can be transplanted; when digging the plant, try to keep as much soil around the roots as you can.
End-of-Season Care: After a deadly frost, remove all leaves, including leaf petioles, and dump it elsewhere, not in the compost pile. Mulched new plants should also have burlap or another material wrapped around them to block winter winds in the coldest climates.
Topdress plants with an inch of old manure or compost in the early spring. Keep an eye out for symptoms of a fungus infection and administer treatment as necessary. Remove any shoots that appear from the rootstock.
Mid-Spring: Due to their heavy blossoms, certain types may require assistance. To increase airflow, thin out any foliage that is too densely packed inside the plant.
Avoid overwatering in the late spring. Deadhead blooming promptly, and take out old flowers and petals from the garden.
In the summer, water plants only when the earth has dried to a depth of four inches. Fish emulsion feeding of the foliage is preferred.
Fall: Tree Peonies are woody shrubs; do not cut them back. After the first frost, remove all foliage; do not compost. Mulch newly planted vegetation and vegetation produced in colder climates, and if brisk winter winds are predicted, wrap vegetation in burlap or another windproof material.
How often should peony be pruned?
Fall is the time to trim the plants to the ground after they begin to turn yellow or brown. The best time to prune the plants is in the early fall or after the first frost. Cutting peonies in the fall aids in eradicating foliar diseases and lowering infection the following season. Simply remove and discard all of the growth at the soil level.
What happens if peonies aren’t pruned back?
In the winter, you don’t really need to do anything to or for your herbaceous bush peony plants. However, if you discover that you neglected to remove the stems in the fall, you still have time to do so.
Herbaceous (bush) peony, such as the intersectional Itoh peonies, eventually lose their leaves and stems when the plants hibernate for the winter. The stems will tumble to the ground and turn “mushy,” and the leaves will begin to decay. That is normal. The plant’s roots are not perishing; instead, new shoots and stems will appear in the spring. People may panic and believe their peony has perished, but this is simply the bush peony’s natural development cycle.
Be careful not to cut any exposed peony ‘eyes,’ which are typically pink or crimson buds and serve as the stems for the following year, while cutting off peony stems that are close to the ground. Put the stems and leaves in the trash after disposal. Peony stems and leaves shouldn’t be composted since they can harbor botrytis, a fungal disease, especially in moist environments. Each peony plant’s surrounding area should be cleaned up.
Most places don’t require mulching peonies. If you mulch your herbaceous bush peony plants, make sure to take it off in the early spring to avoid burying the roots too far. Years of mulching or applying bark dust around bush peony will eventually cause the roots to be buried too deeply, which could lead to fewer spring blooms. Just an inch or two of soil should remain above the roots of herbaceous bush peony after you remove that.
Additionally, it is normal for a mature peony’s crown to gradually heave up through the ground and display some exposed “eyes” in the winter. Don’t worry, peony plants enjoy the harsh winters.
Tree peony leaves must be removed from the ground and branches when they start to degrade. A tree peony’s branches are left hanging, barren and naked for the winter, rather of being chopped down in the fall. Don’t worry too much if you or a helper cuts a tree peony down to the ground and you panic or feel dejected. It’s likely that the roots have grown deeply enough to support spring branch growth. It might grow into a magnificent, revitalized tree peony in two or three years. I’ve seen it happen, so I know. In contrast to bush peony, tree peonies prefer more soil on top of the roots. Try adding a few inches of soil around the base of the trunk of a tree peony if it has lost its vigor. Yes, it is exactly the reverse of what is suggested for bush peony.
You can go outside again after the snow melts and it’s nice out to work on any “lost” stems.
Why won’t my tree peony bloom?
I’ve long been in love with peonies, including herbaceous, intersectional, and tree varieties. I adore their classic elegance, vibrant colors, stunning flowers, and, of course, exuberant scent. Peonies belong in every garden, and every gardener should incorporate them.
Why grow peonies?
Peonies have a rather brief flowering season, which discourages many people from cultivating them. They may believe that there are more cost-effective and colorful plants available, yet when in bloom, peonies are incomparable.
Peonies are regarded by many gardeners as being a challenging plant to grow. The peony blossom is actually a fantastic low maintenance plant, ideal for both inexperienced and seasoned gardeners.
The peony bloom is astounding in its sheer size. Many intersectional peonies, also known as Itoh peonies (a cross between herbaceous and tree peonies), produce blossoms the size of dinner plates in a variety of colors, including white, yellow, pink, and purple. Beautiful single, semi-double, and double flowers are available.
Although some are more fragrant than others, most peony are fragrant. For instance, the lovely double white blossom Paeonia lactiflora ‘Duchesse de Nemours’ AGM has a cream center and the most delicious scent. Paeonia lactiflora ‘Catharina Fontijn’ is one of my favorites. It features delicate blush blossoms that give off a lovely but potent fragrance.
So the peony has fragrant, magnificent, and eye-catching blossoms. What else can you get from this plant? Contrary to the widely believed belief that peonies are delicate and difficult to manage, they are actually very hardy and simple to grow. For a while, they will live contentedly in a reasonably large container, but ultimately they will be happier in the ground.
What are the 3 rules for growing perfect peonies?
With peony, there are a few things to keep in mind, but if you do them correctly, you’ll enjoy decades of hassle-free gardening and the most exquisite display of color and perfume that just gets better with time.
Don’t dig deep
Do not bury your peonies too deeply. Less than 2.5 cm below the surface is the maximum depth at which the tuberous roots may be buried. Some intersectional peonies, like “Bartzella” AGM or “Julia Rose,” have finely cut leaves that become scarlet red in the spring and autumn, while many herbaceous or garden peonies have strong red stems and light green soft foliage, but they simply will not flower if they are planted any deeper.
If a peony in your yard isn’t blooming, it’s usually because you planted it too deeply or you meticulously mulched the borders, which resulted in burying it. Simply wait until the fall and then lift your peony and replant it at the proper depth, being careful not to damage the buds on the roots.
Sun’s out, peonies out
Your peony should be planted in a sunny area. Even while many types, including Paeonia lactiflora ‘White Wings,’ can handle moderate shade, if your peony bloom is in excessive shade, it won’t flower as well.
Drain well
Put your peony on soil that is rich and well-draining. These flowers normally don’t care too much about the soil and do well in free-draining chalky or clay soils. In the winter, they dislike sitting in water.
You can see that the guidelines primarily concern planting your peony. Your peony will be happy to be left alone once it has been planted. In actuality, you most likely don’t need to feed your peony if you have rich, nutritious soil.
A balanced, all-purpose fertilizer like Growmore applied in the spring should work if your soil isn’t the best. In order to prevent peony wilt, it is also a good idea to trim back and remove the dead leaves in the autumn.
Bonus peony growing tips
Peonies are dependable garden performers since they require little upkeep. They won’t overgrow your garden like triffids; most of them will only reach heights of 80 to 90 cm and widths of 60 to 80 cm. They disappear during the winter and reappear in the spring to continue to delight you (this does not apply to tree peonies, whose woody stems are present all year).
Generally speaking, they do not actually suffer from illnesses and pests, and once established, they require minimal maintenance. In fact, deer and rabbits don’t bother them either, which makes them perfect for gardens in rural areas.
Let’s dispel a different misconception about peony flowers while we’re talking about them, which is that they dislike being relocated. The plants should be carefully lifted in the fall and replanted or divided, subject to regulation number 1 (above). Do not overwater them if you are putting them in a container and keep 3-5 buds on each piece of divided root. That’s how simple it is.
You must be patient since peonies need time to mature. Even though it would seem alluring to buy a smaller, less expensive plant and wait for it to develop, my recommendation is to select a well-established peony that is at least 3-5 years old or more in order to guarantee success.