Hybrid lactiflora.  Lilac-pink, lighter reverse.  Very double bloom form.   Jacques Calot (1862).

5 favorite votes.  

Hybrid lactiflora.  Red.  Double bloom form.  USDA zone 2a and warmer.   Alonzo B. Franklin (1928).

5 favorite votes.  

Hybrid lactiflora.  White.  Double bloom form.  USDA zone 2a and warmer.   Walter J. Guille (1928).

5 favorite votes.  

Hybrid suffruticosa.  Rose-pink.  Very large, single, Japanese (anemone, imperial), ruffled bloom form.  Late midseason.   Unknown Japanese Breeder(s) (1893).

5 favorite votes.  

Hybrid lactiflora.  White, salmon-pink shading, rose-pink center, white center.  Large, double, rose bloom form.  Midseason.  USDA zone 2a and warmer.   François-Félix Crousse (1840-1925) (1885).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Small, single bloom form.  Midseason.   Berneche (1894).

5 favorite votes.  

Hybrid lactiflora.   Julian L. Janus.

5 favorite votes.  

Hybrid lactiflora.   Dr. Frederick G. Brethour.

5 favorite votes.  

Hybrid suffruticosa, Tree peony.  Light pink, dark red flares, lavender highlights.  Large, double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 4' (120 cm).   Unknown French Breeder(s) (1899).

5 favorite votes.  

Hybrid rockii, Tree peony.  Light pink, purple flares.  Single to semi-double bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 5' (up to 150 cm).   William H. Gratwick III (1985).

5 favorite votes.  

Hybrid / Species crosses.  Deep pink.  Double bloom form.  Early.   Lyman D. Glasscock (1964).

5 favorite votes.  

Hybrid suffruticosa.  White.  Single bloom form.  Height of up to 28" (up to 70 cm).   Unknown Japanese Breeder(s) (1913).

5 favorite votes.  

Hybrid / Species crosses.  Red.  Bomb, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 30" (up to 75 cm).   Don Hollingsworth (1979).

5 favorite votes.  

Fernleaf Hybrid, Hybrid / Species crosses.  Red.  Strong fragrance.  Medium to large, single bloom form.  Early.  USDA zone 2a and warmer.  Height of 2' to 30" (60 to 75 cm).   Prof. Arthur Percy Saunders (1953).

5 favorite votes.  

Hybrid lactiflora.  White.  Large, double, cupped bloom form.  Very early.  USDA zone 2a and warmer.   Edouard Doriat (1924).

5 favorite votes.  

Hybrid lactiflora.  Light pink or blush, ages to white .  Large, very double bloom form.  Late.  
Height: up to 35" (up to 90cm).   Francis H. Allison (1931).

5 favorite votes.  

Hybrid lactiflora.   James Pillow (1924).

5 favorite votes.  

Hybrid lactiflora.  White, light pink highlights.  Moderate fragrance.  Very large, single, cupped bloom form.  USDA zone 2a and warmer.  Height of up to 4' (up to 120 cm).   Walter Marx (1965).

5 favorite votes.  

Hybrid / Species crosses.  Red.  Small, single bloom form.  Early.  Height of 2' to 25" (60 to 65 cm).   Robert William Tischler (1995).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Japanese (anemone, imperial) bloom form.  USDA zone 2a and warmer.   William Brewster (1952), William Brown (1952).

5 favorite votes.  

Hybrid rockii.  White, dark purple flares.  Moderate fragrance.  Double, ruffled bloom form.  Early.   Chen Dezhong (1992).

5 favorite votes.  

Hybrid / Species crosses.  Red.  Single bloom form.  Height of up to 29" (up to 75 cm).   William Henry Krekler (1978).

5 favorite votes.  

Hybrid lactiflora.  White, lemon-yellow undertones.  Moderate fragrance.  Double bloom form.  Late midseason.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Col. Jesse C. Nicholls (1938).

5 favorite votes.  

Hybrid lactiflora.  Pink, fuchsia / magenta shading, silver(y) edges.  Double bloom form.  Late midseason.   Col. Jesse C. Nicholls (1956).

5 favorite votes.