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

6 favorite votes.  

Hybrid lactiflora.  Light pink.  Semi-double to double bloom form.  USDA zone 2a and warmer.   Archie M. Brand (1933).

6 favorite votes.  

Hybrid suffruticosa.  Purple.  Full bloom form.   Modeste Guérin (1846).

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.  Lilac - pink.  Single bloom form.   Auguste Dessert (1909).

6 favorite votes.  

Hybrid lactiflora.  Light pink.  Blush.  Large, single bloom form.  Early.   Walter L. Gumm (1930).

6 favorite votes.  

Hybrid lactiflora.  Purple - violet.  Large, double bloom form.  Late.   François-Félix Crousse (1840-1925) (1879).

6 favorite votes.  

Hybrid lactiflora.  Deep pink or rose-pink.  Narrow center petals.   Jacques Calot (1858).

6 favorite votes.  

Tree peony.  Purple - red, darker undertones.  Strong fragrance.  Crown bloom form.  Very early.  USDA zone 2a and warmer.  

6 favorite votes.  

Hybrid lactiflora.  Blush, light pink center, lighter outer petals.  Large, double, cupped bloom form.   Ernest Flint Kelsey (1938).

6 favorite votes.  

Hybrid suffruticosa.  Light pink.  Large bloom form.   Charles His (1851).

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

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.  Red.  Glossy.  Medium, double bloom form.   William Henry Krekler (1977).

6 favorite votes.  

Hybrid lactiflora.  White.  Large, single bloom form.  Early.   Gilbert H. Wild & Son (1950).

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 suffruticosa, Tree peony.  Carmine-red, purple shading.  Large, double bloom form.  USDA zone 2a and warmer.   Unknown Japanese Breeder(s).

6 favorite votes.  

Hybrid lactiflora.  Rose-red.  Staminoids edged yellow.  Large, cupped, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 38" (95 cm).   Edward J. Gardner (1951).

6 favorite votes.  

Hybrid lactiflora.  Deep pink, lighter center, white undertones.  Moderate fragrance.  Double, bomb bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 2' to 3' (60 to 90 cm).   Myron D. Bigger (1961).

6 favorite votes.  

Hybrid suffruticosa, Tree peony.  Red, purple shading.  Large, double bloom form.  Height of up to 47" (up to 120 cm).   Unknown Japanese Breeder(s).

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.