Hort Zones 4–9, Dappled Light to Full Sun. Rich Soil with Good Drainage, Neutral pH
In zones 4-9. tree peonies thrive. They require great soil drainage and to be planted deeply.
First, tree peony ought to be planted in areas with few competing trees or plants with their roots. Tree peonies should be spaced 5 feet apart. Plan ahead, though, as tree peony dislike being moved. Keep in mind that your plant grows slowly and will take some time to fill in this space. Tree peonies should be spaced 5 feet apart.
Second, tree peonies require neutral pH and compost-rich soil. They should be planted in an area with good drainage because, like all peonies, they cannot tolerate having their feet wet.
Third, although though they can survive in direct sunlight, tree peonies prefer diffused light. Your tree peony would prefer dappled sunlight throughout the day, or morning sun and afternoon shade. This will increase the amount of sunlight reaching your tree peony while also extending the flower’s life. If you choose to plant your tree peonies in full sun, you might want to use wax paper umbrellas to keep the flowers from fading. You should also keep a close eye on the soil’s moisture level to ensure that your tree peony doesn’t dry up. The varieties with more petals will endure more intense sun than the varieties with fewer petals.
All peony require a pH that is neutral, rich soil, and good drainage. You want to mix equal parts sand, clay, and compost to get a sandy loam soil. Wet feet are intolerable to them. Avoid planting in low-lying places where water collects, and exercise caution when growing near sprinkler or irrigation systems.
When is it okay to move a tree peony?
Pick the right season of the year. Peony plants that have already been established should be moved in the fall, at least six weeks before the ground freezes. As a result, the plant has more time to recover before hibernating for the winter. The best months to transplant a peony are September or October in many parts of North America.
- Reduce the stems. Trim the peony stems to just above the soil line if it hasn’t already died back for the winter. This will make it simpler to determine the actual length of the root system. It is best to carefully dispose of the clippings because peonies are prone to fungal illnesses.
- Pull the peony up. Dig carefully all around the plant. To protect the root system, keep your distance of 12 to 18 inches (30 to 46 cm) from the edge of the stems. Once the root ball can be taken out, keep digging. The ability of the peony to recover may be compromised if the roots are broken when being pulled out of the ground by a person.
- Cut the peony in half. Cut the root system into pieces using a heavy-duty knife or your shovel. (It will be simpler to work if you rinse any extra soil from the root ball.) There should be three to five eyes on each component. The growing shoots for the following year are these eyes.
- Pick a suitable place before transplanting. Peonies prefer soil that drains well and full sun. Peonies should be spaced 24 to 36 inches (61 to 91 cm) apart. Peonies and shrubs or other perennials that might get bigger over time should be spaced apart sufficiently.
- Root divisions should be replanted. Transplanting peony root divisions as soon as feasible is advised. Prepare a hole that can hold the root ball. Place the eyes no more than 2 inches (5 cm) below the surface of the earth. Peonies produce fewer blooms when planted too deeply. Water after compacting the dirt tightly around the root ball.
- The transplanted peony needs mulch. To keep the newly transplanted flowers safe during the winter, spread a thick layer of mulch over them. Before the spring growth season, remove the mulch.
If the flowers appear a little scarce the first spring after relocating established peonies, don’t be concerned. It can take a peony three to four years after transplantation to become well-established and begin to blossom profusely.
How well do tree peonies transplant?
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.
Can you divide a peony tree?
Grafting is the main technique used to propagate tree peony. It takes a lot of time and effort to complete this treatment. Your favorite tree peony may be multiplied much more easily by division. This method is comparable to that used to divide herbaceous peonies.
Not all tree peony make suitable division candidates. Only those that have their own roots growing in them will be able to successfully divide. It is NOT recommended to separate tree peony with just one or two primary trunks. A tree peony with this type of growth pattern probably depends on a sizable grafted herbaceous peony nurse root and is not growing on its own roots.
Also, keep in mind that tree peony develop slowly before opting to try to divide an older, well-established plant. Before divisions reach the splendor of a mother plant’s peak bloom, many years will pass. Having stated that, let’s start chopping!
This tree peony’s two main trunks make it an unlikely candidate for division. In this instance, it’s even feasible that the plant is still dependent on its grafted herbaceous understock and isn’t even growing from its own roots. Using this form to split a plant may not produce any viable divisions.
At the base, you’ll notice a lot of strong stems. This is a sign of a root system that spreads outward.
Remove the leaves from a peony before digging it up. Dig around the plant’s drip line to start.
After a little soil has been worked loose, take some by hand from the base. This will aid in releasing the roots from the soil.
Do some additional digging around the plant. Be patient; strong divisions require healthy roots. Digging hastily and carelessly can easily break roots.
The plant should just slip out of the earth with a little gentle prying once enough soil has been removed.
Since most tree peony are grafted, it is likely that even a well established plant will experience problems.
will keep both its own roots and the original herbaceous graft root. In this image
Both are readily apparent. In contrast to the tree peony, the herbaceous graft root is black and bulbous.
We prefer to give the plant a few hours to “relax.” We apply damp burlap to the roots after wetting the roots. The roots become slightly less brittle and less likely to break throughout the division process as a result of the modest drying that is permitted.
An old, large kitchen knife and a solid pair of garden snips are the two major tools you’ll need. Before beginning, make sure to clean your tools with isopropyl alcohol. Through the wounds you will make, this sterilization will stop pathogenic germs and fungi from spreading.
Remove the herbaceous nurse root if it’s still there before starting the divisions.
The old herbaceous peony nursing root can be thrown away once it has been removed. Or you could try planting it again. It’s possible that it will start to develop little, previously dormant buds. If you do this, you should plan on having to wait a few years before your new herbaceous peony blooms.
You can now begin dividing. The first step is to determine where the plant appears to organically divide. You can now picture the cuts you will need to make. A division needs sufficient roots as well as buds for above-ground growth in order to be viable.
Search for naturally occurring divisions with what appear to be strong stems and roots. Keep an eye out for the fresh tree peony branches that are emerging from the plant’s crown. Take cautious not to harm these.
It’s frequently advisable to try chopping the plant in half first. At this point, you might need to summon a helper.
You can decide to divide your plant as much as possible, or you might just wish to cut it in half.
Cutting through the plant’s hard, woody top will undoubtedly be necessary for any division that goes beyond a simple split. Keep your assistant nearby to assist with this as well.
Clean up your divisions after you’re satisfied with them. Remove root pieces that have turned black and trim ragged cuts.
We advise cutting back the top growth by as much as 1/3 to make sure the above-ground buds won’t place an undue pressure on the roots.
Remove all of the woody top growth from extremely small divisions with weak roots in favor of fresh, robust buds.
The outcome is:
There are several scions to graft, including three giant plants, one medium, two small, and one very small. Replant any fresh divisions right away. The plant will take longer to adapt to its new environment if the roots dry out.