SKU: 00840369422026 Paeonia lactiflora 'Top Hat' Bareroot

Plant Features & Growing Information

• Growth Habit: Upright, bushy, clump-forming herbaceous perennial. Produces fresh stems from an underground crown each spring and dies back to the ground during winter dormancy.

• Peony Type: Herbaceous Lactiflora Peony (Paeonia lactiflora).

• Mature Height: Approximately 32–34 inches tall.

• Mature Spread: Approximately 30–36 inches wide once established.

• Growth Rate: Slow to moderate during establishment, becoming vigorous as the underground crown develops.

• Longevity: Exceptionally long-lived. Established peonies can remain productive in the same garden location for decades.

• Bloom Color: Brilliant cardinal-red to deep rose-red outer petals surrounding a contrasting center of golden-yellow to creamy-yellow modified petals.

• Flower Form: Japanese-style flowers with slightly recurved outer guard petals and a moderately compact center of narrow petaloids.

• Flower Size: Approximately 6 inches across, with flowers reaching around 3 inches deep.

• Bloom Time: Midseason peony, generally flowering during late spring to early summer, commonly May to June depending on climate.

• Flowering Habit: Floriferous, with occasional secondary buds that contribute to the overall display.

• Fragrance: Fragrance is not clearly documented for this cultivar. Any scent is best considered variable rather than a guaranteed feature.

• Foliage: Attractive, deeply divided dark green leaves forming a dense, substantial mound.

• Winter Habit: Herbaceous and deciduous. All above-ground growth dies back after frost while the underground crown remains dormant.

• Fruit Flavor: Not grown for edible fruit. Any seed-containing follicles have no recognized culinary fruit flavor.

• Culinary Uses: Not recommended for culinary use. Although certain peony species have historical food-related uses, Top Hat is cultivated as an ornamental variety and should not be promoted as an edible flower or food crop.

• Medicinal Uses: Paeonia lactiflora has a history of traditional herbal use, particularly preparations made from specifically processed roots. However, ornamental Top Hat roots should not be used for homemade medicinal preparations, and traditional use does not establish safety or effectiveness for self-treatment.

• Possible Toxicity to Pets: Potentially toxic to dogs, cats, and horses if ingested. Peonies contain paeonol, which can cause gastrointestinal symptoms.

• Pet Toxicity Symptoms: Possible symptoms include vomiting, diarrhea, and lethargy.

• Possible Toxicity to Humans: Not recommended for consumption. Ornamental peony roots, seeds, foliage, and flowers should not be eaten without appropriate safety guidance.

• Deer Resistance: Good. Deer generally avoid established peonies, although no garden plant is completely deer-proof.

• Rabbit Resistance: Good. Rabbits typically leave mature peonies alone.

• Pollinator Value: Flowers may attract visiting insects, although the modified central petaloids and absence of normal stamens can limit pollen availability compared with single-flowered peonies.

• Ants on Peonies: Ants are commonly attracted to sugary secretions around developing flower buds. They do not harm the plant and are not necessary for flowers to open.

• Pest Resistance: Generally good once established. Occasional pests may include thrips, scale insects, and nematodes.

• Disease Concerns: Potential diseases include Botrytis blight, peony leaf blotch, powdery mildew, and other fungal problems. Good airflow and garden sanitation help reduce disease pressure.

• USDA Planting Zones: Generally suitable for USDA Zones 3–8, consistent with typical Paeonia lactiflora growing requirements.

• Winter Chilling: Requires a period of cold winter dormancy for reliable flowering.

• Sun Preferences: Full sun is ideal, with at least 6 hours of direct sunlight daily.

• Partial Shade: Tolerates light partial shade, especially afternoon shade in warmer climates. Excessive shade may reduce flower production.

• Drought Tolerance: Moderate once established. Mature plants tolerate occasional dry periods but benefit from consistent moisture during spring growth and flowering.

• Water Requirements: Maintain moderate, consistent moisture during establishment and active spring growth. Avoid waterlogged soil.

• Soil Preferences: Prefers deep, fertile, humus-rich, moist but well-drained soil.

• Soil Adaptability: Can grow in clay, loam, and sandy soils when drainage is adequate.

• Support Requirements: Support may be beneficial during heavy rain or windy conditions. A peony ring can help maintain an upright display.

• Cut Flower Uses: Excellent for colorful bouquets and fresh floral arrangements, with its distinctive red-and-yellow flowers providing strong visual contrast.

• Landscape Uses: Ideal for cottage gardens, perennial borders, cutting gardens, specimen plantings, foundation beds, and traditional flower gardens.

When & How to Prune

• Spring: Allow healthy shoots to emerge and grow naturally. Routine spring pruning is unnecessary.

• During Flowering: Flowers may be harvested for bouquets, but leave adequate foliage on the plant to support the underground crown.

• Deadheading: After blossoms fade, remove spent flowers by cutting the flower stems back to a healthy set of leaves.

• Secondary Buds: Top Hat may produce multiple buds per stem. Avoid removing developing secondary buds if an extended flowering display is desired.

• After Flowering: Do not cut down healthy green foliage. The leaves continue photosynthesizing and storing energy needed for the following year's flowers.

• Summer: Remove badly diseased or damaged foliage when necessary, but preserve healthy leaves.

• Fall Cutback: Once foliage naturally yellows or is killed by frost, cut stems close to ground level.

• Fall Cleanup: Remove old foliage and stems from the planting area to reduce overwintering fungal disease problems.

• Winter: No additional pruning is necessary while the crown remains dormant underground.

Planting Instructions from a Bare Root or "Peony Bulb" into the Ground

Important: Although Top Hat Peonies are commonly sold alongside flower bulbs, they are technically planted from fleshy bare-root divisions with visible growth buds called eyes, rather than true bulbs.

• Best Planting Time: Fall is ideal, generally September through November, while the soil remains workable. Early spring planting is also possible.

• Choose a Permanent Location: Peonies dislike frequent transplanting. Select a location where Top Hat can remain undisturbed for many years.

• Sunlight: Choose a location receiving at least 6 hours of direct sunlight daily.

• Spacing: Space plants approximately 30–36 inches apart to allow for mature growth and good airflow.

• Prepare the Soil: Dig a broad planting hole approximately 12–18 inches wide and deep, or large enough to accommodate the roots comfortably.

• Loosen the Soil: Break up compacted soil around the planting area so the fleshy roots can expand freely.

• Improve Poor Soil: Incorporate compost or well-aged organic matter as needed while maintaining excellent drainage.

• Avoid Fresh Manure: Do not place fresh manure or concentrated fertilizer directly against the roots.

• Identify the Eyes: Locate the small pink, red, or whitish pointed growth buds on the crown. These will produce the following season's stems.

• Position the Root: Place the crown with the eyes facing upward and the fleshy roots extending downward and outward.

• Critical Planting Depth: Position the uppermost eyes approximately 1–2 inches below the finished soil surface.

• Do Not Plant Too Deeply: Peonies planted too deeply may produce healthy foliage but few or no flowers.

• Cold Climates: In colder regions, position the eyes approximately 2 inches below the surface.

• Warmer Climates: Toward the warmer end of the growing range, keep the eyes closer to 1 inch below the surface.

• Backfill Carefully: Gently work loose soil around the roots, eliminating large air pockets without heavily compacting the planting area.

• Water Thoroughly: Water deeply immediately after planting to settle soil around the roots.

• Recheck Planting Depth: After watering and soil settling, confirm that the eyes remain no more than approximately 2 inches below the finished surface.

• Mulching: Apply mulch around the planting area if needed, but avoid piling thick mulch directly over the crown.

• First-Year Watering: Keep the soil moderately moist throughout the first growing season while the root system establishes.

• First-Year Expectations: Newly planted roots may produce limited foliage or few flowers during their first season.

• Establishment Period: Allow approximately 2–3 growing seasons for Top Hat to develop into a substantial flowering clump.

Fertilizing Top Hat Peony

• At Planting: Avoid placing concentrated fertilizer directly against the bare roots.

• Early Spring: Apply compost or an appropriate balanced, slow-release fertilizer around the root zone as new growth begins.

• Avoid Excess Nitrogen: Too much nitrogen can encourage abundant foliage at the expense of flower production.

• Fertilizer Placement: Apply fertilizer around the outer root zone rather than directly over the crown.

Overwintering & Seasonal Care

• Fall: Plant new bare-root peonies in well-prepared soil while temperatures are cool.

• Late Fall: After foliage dies back, cut stems close to ground level and remove old plant debris.

• Winter: The crown remains dormant underground. Cold winter temperatures are beneficial for reliable flowering.

• Early Spring: Reddish shoots emerge from the crown and quickly develop into leafy stems.

• Spring: Maintain adequate moisture as foliage and flower buds develop.

• Late Spring/Early Summer: Brilliant red flowers open to reveal their contrasting golden-yellow centers.

• After Flowering: Deadhead spent blossoms while retaining healthy foliage.

• Summer: Continue watering during prolonged dry periods and allow the foliage to remain intact.

• Autumn: Foliage naturally yellows or browns as the plant transfers energy into the underground crown.

• After Frost: Cut stems down and remove old foliage to prepare for winter dormancy.

Additional Growing Tips

Distinctive Flower Color: Top Hat is especially admired for its unusual combination of brilliant cardinal-red outer petals and golden-yellow centers, creating a striking two-toned display.

Unique Flower Form: Its Japanese-style blossoms feature broad outer petals surrounding a compact center of narrow, modified petals, offering a distinctive alternative to traditional double-flowering peonies.

Planting Depth Is Critical: Keep the uppermost crown buds approximately 1–2 inches below the finished soil surface. Excessively deep planting can prevent reliable flowering.

Be Patient: Newly planted bare-root peonies often spend their first season establishing roots. Flowering generally improves during the second and third growing seasons.

Cut Flower Tip: Harvest flower stems as the buds begin to soften and show their mature color, before the blossoms fully open. Leave plenty of foliage on the plant.

Companion Planting: Top Hat pairs beautifully with purple alliums, lavender, catmint, salvia, bearded irises, hardy geraniums, roses, and ornamental grasses.

Ant Tip: Ants are naturally attracted to sugary secretions around developing peony buds. They are generally harmless and are not necessary for flowers to open.

Long-Term Care Tip: Once established, leave Top Hat undisturbed whenever possible. Peonies generally become larger and more impressive with age.

Safety Reminder: Top Hat is an ornamental peony rather than an edible crop. Keep roots, foliage, and other plant material away from pets likely to consume garden plants.