(Garden Peony) Karl Rosenfield (1/pk)

Paeonia lactiflora ‘Karl Rosenfield’

The Karl Rosenfield Garden Peony is a beloved classic known for its brilliant crimson-red, double-petaled blooms and rich fragrance. This heirloom variety has been prized in gardens since the early 1900s for its dramatic floral display and exceptional longevity. It stands tall on sturdy stems, making it a perfect candidate for perennial borders, formal gardens, and cutting beds. With a late-spring bloom time and a lifespan that can span generations, this peony brings both elegance and heritage to your landscape.

• USDA Zones: 3-8
• Bloom Time: Late spring
• Height: 36"
• Planting depth/Spacing: 2"/24-36"
• Deer Resistant: yes

To learn more about the peonies’ upkeep and maintenance, please visit our blogs and videos below.

Karl Rosenfield peony roots produce robust, upright plants that offer unmatched beauty and reliable performance. These long-lived perennials bloom in dramatic fashion year after year, producing large, ruffled flowers that are ideal for cutting and arranging. Their tolerance to cold climates and low maintenance needs make them a staple for northern gardeners and an exquisite addition to any peony collection.

Key Characteristics and Benefits of Karl Rosenfield Peonies

• Classic Crimson Blooms: Fully double flowers with bold, red petals and light fragrance.
• Ideal for Cut Flowers: Long-lasting blooms that add volume and color to floral arrangements.
• Low-Maintenance and Hardy: Thrives in a wide range of climates with minimal care.
• Pollinator Friendly: Attracts bees and other beneficial insects in spring.
• Exceptionally Long Life: Peonies can flourish in the same spot for 50+ years.

The Peonies Life Cycle

It follows a perennial life cycle. In spring, reddish shoots emerge from the ground, growing into lush foliage and flower buds. These buds open into large blooms in late spring, providing weeks of visual impact. After flowering, the foliage supports the root system by photosynthesizing through summer. In autumn, the foliage dies back naturally as the plant enters dormancy, storing energy for the next growing season.

Growing Karl Rosenfield Peony Roots

Plant these roots in fall or early spring in well-drained soil with good air circulation. Place the eyes just 2 inches below the soil surface, spacing roots 24–36 inches apart to allow for mature growth. Avoid planting too deeply, as this can inhibit blooming.

Soil and Light Needs

This peony prefers full sun (at least 6 hours daily) and fertile, well-draining soil. Amend heavy soils with compost or aged manure to improve drainage and fertility.

Watering and Seasonal Care

Water thoroughly during dry periods, especially in the first year after planting. After blooming, allow the foliage to remain until it naturally yellows and dies back. Mulch in colder regions to insulate the roots over winter.

For detailed instructions on planting and seasonal care, visit our Flower Bulb Growing Guide.

Multiple Trusted Brands at Grow Organic

At Grow Organic, we offer the Karl Rosenfield peony from a curated selection of high-quality and trusted growers. This allows our customers to choose from top-performing roots suited to different regions and garden preferences. With multiple premium options, you have the flexibility to grow with confidence and success.

Enhance your garden’s seasonal color and support local pollinators with vibrant blooms from our Annual Flower Seeds Collection.