Cora Louise Peony (Paeonia 'Cora Louise')

Cora Louise Peony

Paeonia 'Cora Louise'

Lush, ruffled blooms blend soft pink and white, a garden showstopper. Herbaceous perennial peony cultivar.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; requires at least 6 hours of direct sun for optimal blooming; provide afternoon shade in hot summer regions.
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Watering Water deeply when top 5–7 cm of soil is dry; avoid overwatering to prevent root rot and fungal diseases.
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Temperature Hardy to -20°C; tolerates summer heat up to 30°C; requires 800+ hours of cold stratification to initiate spring blooming.
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Characteristics

  • Leaf: Deeply divided, glossy green compound leaves with serrated margins; turns bronze in autumn.
  • Flower: Double, ruffled blooms with creamy white base and soft pink edges; fragrant, up to 15 cm in diameter.
  • Stem: Erect, sturdy green stems that may require staking under heavy blooms.
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Care Guide

Watering

Water regularly during active growth and bloom period; ensure soil stays evenly moist but not waterlogged

Fertilization

Apply balanced slow-release fertilizer in early spring before new growth emerges. Avoid high-nitrogen fertilizers which promote foliage over flower production.

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of clumps in early spring; work lightly into the top 2 cm of soil to avoid disturbing roots.
Pruning
  • Cut back dead foliage to ground level in late autumn after frost to reduce overwintering fungal spores.
  • Remove spent blooms promptly after flowering to prevent seed formation and conserve energy for next year's growth.
  • Thin crowded clumps every 3–4 years in early spring to improve airflow and reduce disease risk.
  • Stake tall stems in early spring before blooms open to prevent bending under heavy flower weight.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed toxic; contains paeonol which causes gastrointestinal upset

Humans: Ingestion may cause mild gastrointestinal discomfort; contact with sap rarely causes skin irritation

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Garden Uses & Culture

Culture: Symbolizes prosperity, romance, and bashfulness in Western floral traditions; often used in wedding bouquets.

Usage: Ornamental garden plant; long-lasting cut flower for floral arrangements.