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

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

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.  Dark red.  Very crinkled petals.  Large, single bloom form.  Midseason.   Gilbert H. Wild & Son (1957).

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 lactiflora.  White.  Staminoids persist after outer petals fall.  Japanese (anemone, imperial) bloom form.  Late.   Arthur L. Murawska (1944).

6 favorite votes.  

Hybrid lactiflora.   Peter Barr (1899).

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 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 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 lactiflora.  Light pink, cherry-red stripes.  Double bloom form.  Mid.  USDA zone 2a and warmer.  Height of 32" to 34" (80 to 85 cm).   Roy G. Klehm (1969).

6 favorite votes.  

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

6 favorite votes.