Variety Origin: Karl Rosenfield is a classic milky-white flowered peony variety bred by American breeder Rosenfield in 1908, belonging to the Paeonia lactiflora group. It is certified by the American Peony Society (APS) as the “Best Red Peony Variety.”
Core Characteristics: Petals are numerous. Outer petals are broad and wavy, inner petals are curved and serrated, arranged compactly and neatly, full of three-dimensionality.
Cultivation Performance: A typical sun-loving variety, requiring 6+ hours of direct sunlight daily, tolerates light partial shade. Extremely cold hardy. Prefers deep, fertile, well-drained soil, with good adaptability to clay, loam, and sandy soils.
Karl Rosenfield peony takes “century-old classic red flowers, super cold hardiness, and broad adaptability” as its core advantages, becoming a benchmark variety among red-flowered peonies.
