I have worked with A.D.R. Bulbs for almost 5 years now, and my company has sourced bulbs with them for longer than that. Communication is great - from ordering, to deliveries, to follow-ups on final product. I love the quality of the product as well as the service. We plant nearly 100,000 bulbs and A.D.R. keeps the whole process easy for us!

Louise Licata , Bland Landscaping Co.

« Previous Plant | Next Plant »

Paeonia 'Karl Rosenfeld' (Ships in Spring)

Garden Peony

Peony 'Karl Rosenfield' is a classic, midseason variety with large, 6-inch fully double, vibrant cherry-red blooms. Standing 24–36 inches tall, the flowers rise on strong stems above lush, glossy, dark green foliage that remains attractive throughout summer and often turns deep ruby-red in fall. Thriving in full sun to part shade, this reliable perennial prefers rich, well-drained soil and makes an excellent cut flower with a long vase life. Ideal for borders and mixed plantings, it has been a favorite since its introduction in 1908.

Description	Price
Bundle of 25 tags	$2.50
Get Notified When Back In Stock Complete this form and we'll notify you when SKU TAGS is restocked. Email: Needed By: Qty Requested:
Bulk Box of 25 Roots, Size 3-5 eye	$107.50
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SBIN55916003 is restocked. Email: Needed By: Qty Requested:

Paeonia Calculator

Fill out the dimensions below to determine how much product is required for planting.

Growing and Maintenance Tips for Paeonia 'Karl Rosenfeld' (Ships in Spring)

Planting: Plant as early in spring as the soil can be worked—ideally before daytime temperatures consistently exceed 70°F. Set the crown 1 to 2 inches below the soil surface. Avoid planting too deep, as this can delay or prevent blooming.
Spacing: Space plants 2.5 to 3 feet apart to allow for mature spread and good air circulation.
Light: Full sun (6–8 hours daily) is best. In warmer zones, light afternoon shade can help reduce heat stress.
Soil: Rich, well-drained soil with a neutral pH (6.5–7.0). Amend with compost and grit if needed to improve drainage.
Watering: Water deeply after planting and keep soil evenly moist (not soggy) through the first growing season.
Temperature & Humidity: Hardy in USDA zones 3–8. Spring-planted peonies may take longer to establish and bloom, especially in warmer zones.
Fertilization: Hold off on fertilizing until the second year. Focus on root development in year one.
Staking: Large double blooms may need support. Install peony rings or discreet stakes early in the season.
Pruning: Deadhead spent blooms. Cut foliage to the ground in fall after frost.
Propagation: Divide clumps only if necessary, and only in fall—peonies dislike disturbance.
Pest & Disease: Generally pest-free. Good air circulation helps prevent botrytis blight. Avoid overhead watering.