PL#4326

'Sunny Girl'

Paeonia

Z 3–83.333 ft2–2.5 ft

Introduced in 1985 by American breeder Klehm, Paeonia ‘Sunny Girl’ is a standout early‑season peony known for its bright, cheerful yellow semi‑double blooms. Flowers open in late spring with broad, buttery‑yellow petals surrounding a warm golden center, creating a luminous, sunlit effect that holds beautifully in the garden. The blooms are large, lightly ruffled, and carried on strong stems that rise above a full, rounded clump of deep green foliage. While not an APS Gold Medal winner, ‘Sunny Girl’ is widely appreciated for its reliable performance, vibrant color, and strong retail appeal in the increasingly popular yellow peony category. Thriving in full sun with fertile, well‑drained soil, it is a long‑lived, high‑impact variety that brings early brightness and exceptional garden presence.

Public reference

Genus
Paeonia
Species
—
Cultivar
Sunny Girl
Trade name
—
Hardiness zones
3–8 (USDA)
Mature height
3.333 ft
Mature width
2–2.5 ft
Description
Introduced in 1985 by American breeder Klehm, Paeonia ‘Sunny Girl’ is a standout early‑season peony known for its bright, cheerful yellow semi‑double blooms. Flowers open in late spring with broad, buttery‑yellow petals surrounding a warm golden center, creating a luminous, sunlit effect that holds beautifully in the garden. The blooms are large, lightly ruffled, and carried on strong stems that rise above a full, rounded clump of deep green foliage. While not an APS Gold Medal winner, ‘Sunny Girl’ is widely appreciated for its reliable performance, vibrant color, and strong retail appeal in the increasingly popular yellow peony category. Thriving in full sun with fertile, well‑drained soil, it is a long‑lived, high‑impact variety that brings early brightness and exceptional garden presence.

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Identity

Common names
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Patent number
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Lifecycle & form

Lifecycle
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Deciduous / evergreen
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Height category
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Form
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Growth habit
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Site requirements

Sun exposure
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Soil moisture
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pH range
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Drought tolerant
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Flood tolerant
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Heat tolerant
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Flowers

Bloom months
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Flower colors
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Flower size
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Flower shape
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Petal count
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Reblooming
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Fragrance level
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Fragrance notes
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Foliage

Foliage colors (by season)
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Variegated
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Seasons of interest
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Wildlife & safety

Attracts
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Deer resistant
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Rodent resistant
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Pet toxicity
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Human toxicity
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Use & care

Best for
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Thornless
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Has seed pods
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Difficulty level
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Gardener notes
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Legal

Asexual propagation forbidden
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Patent expires
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