Peonies can flower for generations when planted correctly. Learn the right planting depth for herbaceous, woody and Itoh peonies, what to expect during the first three years, and how to water, stake, deadhead, divide and transplant these long-lived garden favorites without sacrificing future blooms.
Peonies are famous for their extravagant flowers, but their greatest strength may be their longevity. A well-sited peony can remain in the same place for decades, producing larger and more impressive displays as it matures. Once established, peonies generally require little intervention, but they are particular about how and where they are planted.
Most peony disappointments can be traced to a few preventable problems: planting the crown too deeply, choosing a poorly drained site, providing insufficient sunlight, removing the foliage too early, or expecting a newly planted root to flower immediately.
This complete peony care guide explains how to plant bare-root peonies, select the correct planting depth, water plants before and after flowering, support heavy blooms, deadhead correctly, clean up foliage in fall, divide established clumps, and manage transplant shock. It also explains the important care differences among herbaceous peonies, woody or tree peonies, and intersectional Itoh peonies.
The most important peony-care rule: Do not plant herbaceous peonies too deeply. A deeply buried crown may produce healthy foliage for years but few or no flowers. Always measure planting depth from the finished soil level after the soil has settled.
Before planting, dividing, or pruning a peony, identify its type. Herbaceous, woody, and Itoh peonies share many growing requirements, but they are not planted or cut back in exactly the same way.
Gardenia’s guide to peony types and varieties provides a broader introduction to their flower forms, colors, bloom seasons, and garden uses.
| Peony type | Winter behavior | Typical planting approach | Fall pruning |
|---|---|---|---|
| Herbaceous peony | Stems die to the ground | Eyes generally 1-2 in. below the finished soil surface | Remove dormant stems at ground level |
| Woody or tree peony | Woody framework remains above ground | Grafted plants are planted deeply, with the graft commonly at least 4 in. below soil level | Do not cut healthy woody stems to the ground |
| Itoh peony | Top growth usually dies back like an herbaceous peony | Generally planted about 2 in. deeper than ordinary herbaceous peonies | Remove dead stems while preserving any viable basal buds |
Early fall is the preferred planting season for bare-root peonies. The soil is still warm enough for root development, while cooler air reduces stress on the dormant crown. In cold regions, plant several weeks before the ground normally freezes. In milder climates, planting can continue later into fall as long as the soil remains workable and is not saturated.
Bare-root peonies can also be planted in spring, but spring-planted roots often establish more slowly and require closer attention to watering. A spring-planted peony may produce only a few short stems during its first growing season. Its main task is developing roots, not producing a mature floral display.
Container-grown peonies may be planted during the growing season when temperatures are moderate. Avoid planting during extreme heat, severe drought, or periods when wet soil would be compacted by digging.
Sunlight: Most herbaceous and Itoh peonies flower best with at least six hours of direct sunlight. Full sun promotes abundant buds and stronger stems in cool and moderate climates. In regions with very hot springs or summers, light afternoon shade can reduce heat stress and help the flowers last longer. Excessive shade, however, often leads to weak growth and poor flowering.
Drainage: Peony roots are thick, fleshy, and adapted to store energy. They are not adapted to remain in waterlogged soil. Avoid low areas where water collects after rain or snowmelt. If drainage is questionable, improve the entire planting area or create a gently raised bed rather than planting the crown in a small amended pocket that may hold water.
Soil: Peonies adapt to many garden soils when drainage is reliable. A fertile loam containing moderate organic matter is ideal. Heavy clay should be improved across a broad area, while very sandy soil benefits from compost that increases moisture retention.
Root competition: Do not plant peonies immediately beside large trees, mature shrubs, or vigorous hedges. Their roots compete aggressively for moisture and nutrients and can reduce peony growth and flowering.
Air circulation: Allow enough space for the foliage to dry after rain. Permanently crowded peonies are more vulnerable to botrytis, leaf spots, and other fungal diseases.
A healthy bare-root peony division usually has firm, fleshy storage roots and several pink, red, cream, or white growth buds called eyes. The roots may look irregular or may have been trimmed for shipping. This is normal as long as they remain firm and are not extensively soft, hollow, or rotten.
Prepare a broad planting area. Loosen the soil deeply and widely enough to accommodate the root system without sharply bending the roots.
Set the crown on firm soil. Position the eyes upward and spread the roots naturally. Supporting the crown on settled soil reduces the risk of it sinking too deeply.
Measure the depth carefully. After backfilling, the eyes should generally rest 1-2 inches (2.5-5 cm) below the finished soil surface.
Firm the soil gently. Remove large air pockets without compacting the soil into a hard mass.
Water thoroughly. A deep first watering settles soil around the roots and reveals whether additional soil is needed.
Mark the location. Young peonies may disappear completely during winter and emerge later than expected in spring.
Planting depth by climate: Set herbaceous peony eyes approximately 1-2 inches (2.5-5 cm) below the finished soil surface. In warm regions near the edge of reliable peony-growing territory, keep the crown toward the shallow end of that range. Never leave the eyes exposed, and do not bury the crown more deeply in an attempt to protect it.
Woody or tree peonies: Many woody peonies are grafted onto herbaceous peony rootstock. The graft union should be planted deeply, commonly at least 4 inches (10 cm) below the soil surface. Deeper planting encourages the woody scion to develop its own roots and reduces its long-term dependence on the temporary herbaceous nurse root.
Give a woody peony enough room for its permanent branching structure. Unlike herbaceous peonies, its stems remain above ground during winter and form the framework that carries future flowers.
Itoh peonies: Itoh or intersectional peonies die back in winter like herbaceous peonies, but their crowns may carry buds at several levels along short stem sections. The American Peony Society recommends planting Itoh peonies about 2 inches (5 cm) deeper than ordinary herbaceous varieties. Position the crown so the lower buds and short stem sections are covered, and follow the grower’s instructions when the root has an elongated or unusually shaped crown.
Most herbaceous peonies need approximately 3-4 feet (90-120 cm) between plant centers. Broad Itoh cultivars and mature woody peonies may need more room. Compact selections can be somewhat closer, but mature foliage should not form a congested mass.
Proper spacing improves airflow, allows room for supports, simplifies fall cleanup, and prevents surrounding plants from covering the crown. Plan the planting according to mature spread rather than the size of the nursery root.
Gardenia’s color guides can help build an extended display using pink peonies, white peonies, red peonies, yellow peonies, and coral peonies.
A newly planted peony rarely looks impressive immediately. A bare-root division may produce only one or two short stems during its first spring. Some young plants form small buds that fail to open, while others produce no buds at all.
Do not repeatedly dig up a slow young peony to inspect it. Unless the crown is rotting, the soil is waterlogged, or the planting depth is obviously wrong, patience is usually more helpful than intervention.
First-year reality: A peony that does not flower during its first season is not necessarily unhealthy. Newly planted and recently divided peonies may need two or three growing seasons to establish enough roots and stored energy for dependable bloom.
Paeonia lactiflora ‘Sarah Bernhardt’
Newly planted peonies need consistent moisture while their roots establish. Water deeply when the surrounding soil begins to dry, ensuring that moisture reaches the full root zone rather than wetting only the surface. Do not keep the crown continuously wet.
Established peonies are moderately drought tolerant, but prolonged dryness can reduce growth and affect the following year’s bloom. Pay particular attention during three important periods:
Water the soil rather than the foliage whenever practical. Morning irrigation is preferable because splashed leaves have time to dry. Peonies growing beneath roof overhangs or near thirsty shrubs may remain dry even after rain.
Peonies growing in reasonably fertile soil often need little supplemental fertilizer. Excessive nitrogen promotes lush, soft foliage at the expense of flowers and can increase stem lodging and disease susceptibility.
Base feeding decisions on plant performance and, ideally, a soil test. When growth is weak and the soil is deficient, apply a modest amount of balanced or bulb-type fertilizer around the outer root zone rather than directly against the crown.
A thin layer of finished compost may be applied over the surrounding soil, but repeated heavy applications can gradually bury herbaceous eyes. Do not place concentrated fertilizer, fresh manure, or large quantities of bone meal directly against peony roots.
Fertilizer cannot correct deep planting, insufficient sunlight, poor drainage, or competition from nearby trees.
A light organic mulch suppresses weeds, moderates soil temperatures, and slows moisture loss. Keep it thin directly over and around an herbaceous peony crown. As mulch decomposes and new layers accumulate, the effective planting depth can increase enough to interfere with flowering.
New fall plantings in extremely cold climates may receive temporary winter mulch after the ground begins to freeze. Remove or pull it back in spring before the shoots elongate. Established hardy peonies generally do not need a heavy winter covering.
Paeonia lactiflora ‘Philomele’
Large double flowers can collect rain and pull their stems toward the ground. Install supports early, while the shoots are still short, so the foliage grows through and hides them.
Peony rings, grid supports, or individual stakes with soft ties can all work. Avoid tying an entire mature plant into a tight bundle. Compressed foliage looks unnatural and reduces air movement through the center of the clump.
Single, Japanese, anemone, semi-double, and many Itoh peonies often have a more favorable balance between flower weight and stem strength than very heavy double cultivars. Gardeners who prefer less maintenance should explore Gardenia’s guide to peonies that do not require staking.
Remove spent flowers after the petals fall, cutting back to a strong leaf rather than removing a long section of healthy stem. Deadheading improves appearance, prevents decaying petals from collecting within the foliage, and stops unwanted seed production.
Deadheading does not make peonies bloom again. Its purpose is sanitation and appearance, not rebloom. Preserve as much healthy foliage as possible because the leaves continue photosynthesizing and replenishing the root system throughout summer.
Species peonies and fertile cultivars may be left to form decorative seedpods when seed collection is desired. In that case, retain selected pods and deadhead the rest.
After flowering, resist the temptation to cut the plant down. Healthy foliage is essential to the following year’s performance. Continue watering during prolonged dry periods, remove fallen petals, and monitor the foliage for signs of disease.
When cutting flowers for the house, leave sufficient foliage on every harvested stem to sustain the crown. Avoid removing most of the stems from a newly planted or recently divided peony.
Fragrance varies considerably among cultivars and may change with temperature, flower age, and time of day. Gardenia’s guide to fragrant peonies can help identify varieties suited to seating areas, paths, entrances, and cutting gardens.
Herbaceous peonies: Wait until the foliage has yellowed, browned, or been killed by frost. Cut the stems close to ground level and remove the foliage from the garden. Clean cutting tools between plants when disease has been present.
Itoh peonies: Remove dead top growth in late fall. Examine the lower stems before cutting because viable buds may occur close to the crown or along the stem bases. Leave any short basal sections needed to preserve visible buds.
Woody peonies: Do not cut healthy woody stems to the ground. Remove fallen leaves and prune only dead, broken, diseased, rubbing, or badly crossing wood. Severe pruning can sacrifice flowers because woody peonies bloom from their permanent framework.
Why cleanup matters: Botrytis and other peony diseases can survive on infected stems and leaves. Removing diseased debris reduces the amount of fungal material remaining near the crown for the following spring.
Peonies do not require routine division to remain vigorous. Divide them only when you want additional plants, need to relocate the clump, or must correct a planting-depth or site problem.
Early fall is generally the best time to divide herbaceous peonies. By then, the foliage has supplied the roots with energy, while the replanted divisions still have time to begin establishing before winter.
Cut herbaceous stems close to ground level.
Dig broadly around the plant to preserve as much of the fleshy root system as possible.
Lift the clump carefully and wash or gently remove enough soil to expose the crown.
Use a clean, sharp knife to divide the crown.
Aim for divisions with approximately three to five healthy eyes and a substantial portion of storage root.
Discard soft, hollow, badly diseased, or extensively rotted material.
Replant promptly at the correct depth and water thoroughly.
Very small divisions may survive but usually take longer to reach flowering size. Very large divisions can be difficult to position correctly and do not necessarily establish more quickly.
Peonies dislike major root disturbance. A transplanted plant may produce fewer stems, smaller leaves, or no flowers for one or more seasons while rebuilding its root system. This temporary decline is especially common when a large clump is moved intact or damaged during digging.
After transplanting, maintain even moisture but do not keep the soil saturated. Avoid forcing new growth with high-nitrogen fertilizer. Confirm that the herbaceous eyes have not been buried too deeply and allow the plant time to recover.
If a peony remains flowerless after several years, investigate planting depth, sunlight, drainage, excessive nitrogen, and competition from nearby roots before continuing to blame transplant shock.
| Mistake | Likely result | Better approach |
|---|---|---|
| Planting herbaceous eyes too deeply | Healthy foliage but few flowers | Reset the eyes 1-2 in. below the finished surface |
| Planting in waterlogged soil | Crown and root decline | Improve drainage or select another site |
| Heavy nitrogen feeding | Soft growth, lodging, and reduced bloom | Feed modestly and only when needed |
| Removing foliage immediately after flowering | Weaker roots and poorer future flowering | Retain foliage until natural dormancy |
| Installing supports after stems collapse | Bent, broken, or tangled stems | Install supports while shoots are short |
Peonies are generally dependable, but prolonged wet weather, poor air circulation, infected debris, and waterlogged soil can encourage disease.
Peony wilt (Botrytis blight) may blacken young shoots, rot flower buds, and produce gray mold. Powdery mildew creates a pale or white coating on the foliage, often later in the growing season. Root and crown rots may cause sudden collapse, particularly in poorly drained sites.
Remove affected material promptly, improve airflow, water the soil rather than the foliage, and avoid working among wet plants. Do not assume every problem requires a pesticide. Correcting drainage, spacing, sanitation, and watering practices often provides more lasting improvement.
Ants commonly visit peony buds to feed on sugary secretions. They are not needed for the flowers to open, but they are also not normally harming the plant. There is no reason to spray healthy peony buds simply because ants are present.
For detailed symptom identification, consult Gardenia’s complete guide to peony problems, pests, and diseases.
Plant herbaceous peonies with the eyes approximately 1-2 inches below the finished soil surface. In warm regions near the edge of reliable peony culture, keep the eyes toward the shallow end of that range. Planting too deeply is a common reason peonies grow leaves but fail to bloom.
Early fall is generally the best time to plant bare-root peonies because their roots can begin establishing before winter. Spring planting is possible, but plants may require closer watering and often take longer to settle.
Newly planted or divided peonies often need two or three growing seasons to establish before flowering well. Other possible causes include planting too deeply, insufficient sunlight, excessive nitrogen, drought, poor drainage, or competition from nearby roots.
Water newly planted peonies deeply whenever the root zone begins to dry. Established plants need supplemental water during prolonged dry periods, particularly during spring growth, flowering, and the summer period when they are storing energy for the following year.
Not necessarily. Peonies growing strongly in fertile soil may need no annual fertilizer. When feeding is justified, use a modest application around the outer root zone and avoid high-nitrogen products, fresh manure, and fertilizer placed directly against the crown.
Yes, unless you want seedpods. Remove spent flowers back to a strong leaf to keep the plant tidy and reduce decaying petals. Deadheading does not produce another flush of peony flowers, so preserve as much healthy foliage as possible.
Cut herbaceous and Itoh peonies back after the foliage has died naturally or been killed by frost. Remove and discard the debris. Do not cut healthy woody peony stems to the ground because they form the permanent framework of the shrub.
Itoh peonies are generally planted about 2 inches deeper than ordinary herbaceous peonies because their crowns may carry buds at several levels along short stem sections. Cover the lower buds and follow the grower’s instructions when the crown has an elongated or unusual shape.
Divide peonies in early fall when relocation or propagation is necessary. Peonies do not require routine division for vigor. Replant divisions with approximately three to five healthy eyes and a substantial root system at the correct depth.
A moved peony may need one to three growing seasons to regain strong flowering. Maintain even moisture, avoid excessive fertilizer, and verify the planting depth. Persistent failure after several years usually indicates another problem.
No. Heavy double herbaceous peonies are most likely to need support, especially after rain. Many single, Japanese, anemone, semi-double, and Itoh peonies have sturdier stems and may remain upright without staking.
Updated: August 2026 • Reviewed by Gardenia Editors
| Hardiness |
3 - 9 |
|---|---|
| Plant Type | Perennials, Shrubs |
| Plant Family | Paeoniaceae |
| Genus | Paeonia |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Late), Summer (Early), Fall |
| Maintenance | Average |
| Water Needs | Average |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Moist but Well-Drained |
| Characteristics | Cut Flowers, Fragrant, Showy |
| Tolerance | Deer, Rabbit |
| Attracts | Bees, Butterflies |
| Landscaping Ideas | Beds And Borders, Wall-Side Borders |
| Garden Styles | City and Courtyard, Informal and Cottage |
| Hardiness |
3 - 9 |
|---|---|
| Plant Type | Perennials, Shrubs |
| Plant Family | Paeoniaceae |
| Genus | Paeonia |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Late), Summer (Early), Fall |
| Maintenance | Average |
| Water Needs | Average |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Moist but Well-Drained |
| Characteristics | Cut Flowers, Fragrant, Showy |
| Tolerance | Deer, Rabbit |
| Attracts | Bees, Butterflies |
| Landscaping Ideas | Beds And Borders, Wall-Side Borders |
| Garden Styles | City and Courtyard, Informal and Cottage |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
Join now and start creating your dream garden!
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