Hybrid lactiflora.  White, light pink highlights.  Double, rose bloom form.  USDA zone 2a and warmer.   Col. Jesse C. Nicholls (1937).

6 favorite votes.  

Hybrid Lutea, Tree peony.  Yellow.  Semi-double, ruffled bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 3' to 4' (90 to 120 cm).   Prof. Arthur Percy Saunders (1944).

6 favorite votes.  

Hybrid suffruticosa, Tree peony.  White.  Citrus fragrance.  Large, double bloom form.  Mid.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s).

6 favorite votes.  

Hybrid lactiflora.   Joseph Bernstein.

6 favorite votes.  

Intersectional Hybrid / Itoh.  Yellow, lighter edges, red flares.  Medium, single to semi-double bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 18" to 2' (45 to 60 cm).   Don Hollingsworth (1974).

6 favorite votes.  

Hybrid lactiflora.  Red.  Japanese (anemone, imperial) bloom form.   Robert William Tischler (1976).

6 favorite votes.  

Hybrid lactiflora.  White, cream center.  Moderate fragrance.  Very large, Japanese (anemone, imperial) bloom form.  Mid.  USDA zone 2a and warmer.  Height of 30" to 3' (75 to 90 cm).   Myron D. Bigger (1937).

6 favorite votes.  

Hybrid lactiflora.  Seashell-pink, lighter center, salmon-pink shading, ages to lighter .  Small bonnet.  Rose, sweet fragrance.  Large, full, rose bloom form.  Early-to-mid.  USDA zone 2a and warmer.   Unknown Dutch Breeder (1905).

6 favorite votes.  

Hybrid lactiflora.  Dark red.  Large, single, ruffled bloom form.  Midseason.   Gilbert H. Wild & Son (1957).

6 favorite votes.  

Hybrid lactiflora.   Julian L. Janus.

6 favorite votes.  

Hybrid lactiflora, Unknown.  Cream, light pink shading.  Moderate fragrance.  Double bloom form.  Mid-to-late.  USDA zone 2a and warmer.  Height of up to 30" (up to 75 cm).   Roy G. Klehm (1993).

6 favorite votes.  

Hybrid / Species crosses.  Red.  Semi-double to double bloom form.  Early.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1950).

6 favorite votes.  

Hybrid lactiflora.  White, lemon-yellow center.  Light pink bonnet (15-30 petals).  Strong fragrance.  Medium, double, bomb bloom form.  Early-to-early mid.  USDA zone 2a and warmer.  Height of 30" to 35" (75 to 90 cm).   Carl G. Klehm (1970).

6 favorite votes.  

Hybrid rockii, Tree peony.  White, dark purple flares.  Moderate fragrance.  Double, Japanese (anemone, imperial) bloom form.  Early-to-mid.   Chen Dezhong (1985).

6 favorite votes.  

Hybrid lactiflora.  Red, yellow center.  Semi-double to double bloom form.  Midseason.   Krasnova / Краснова (1960).

6 favorite votes.  

Hybrid lactiflora.  Pink.  Large, single, cupped bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 43" (up to 110 cm).   Auguste Dessert (1902).

6 favorite votes.  

Hybrid suffruticosa, Tree peony.  White.  Mild fragrance.  Large, semi-double to double bloom form.  Height of 2' to 35" (60 to 90 cm).   Unknown Japanese Breeder(s) (1931).

6 favorite votes.  

Hybrid lactiflora.   Edward Auten, Jr. (1937).

6 favorite votes.  

Hybrid lactiflora.  Rose-red.  Strong fragrance.  Double, flat bloom form.  Late.  USDA zone 2a and warmer.  Height of 30" to 3' (75 to 90 cm).   Walter Marx (1965).

6 favorite votes.  

Species, Tree peony.  Large, cupped bloom form.  USDA zone 4b through 9b.  Height of 3' to 6' (90 to 185 cm).  Width of 3' to 6' (90 to 185 cm).

6 favorite votes.  

Hybrid Lutea, Tree peony.  Mauve, yellow undertones, darker flares.  Single to semi-double bloom form.  Late midseason.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1941).

6 favorite votes.  

Hybrid lactiflora.  Light pink, yellow center.  Japanese (anemone, imperial) bloom form.  USDA zone 2a and warmer.   Unknown Japanese Breeder(s) (1909).

6 favorite votes.  

Hybrid suffruticosa.   E. H. Krelage & Zoon (1867).

6 favorite votes.  

Hybrid lactiflora.  Red.  Staminoids edged yellow.  Single, Japanese (anemone, imperial) bloom form.  Midseason.   S. Wóycicki (1977).

6 favorite votes.