Hybrid lactiflora.  Dark red, yellow center.  Japanese (anemone, imperial) bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 18" (up to 45 cm).   Albert Niva (1999).

6 favorite votes.  

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

6 favorite votes.  

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

6 favorite votes.  

Hybrid suffruticosa, Tree peony.  White.  Double, Japanese (anemone, imperial) bloom form.  Mid.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s).

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.  

Hybrid Lutea, Tree peony.  Crimson, dark red flares.  Large, single to semi-double bloom form.  Mid.  USDA zone 2a and warmer.  Height of up to 3' (up to 90 cm).   Prof. Arthur Percy Saunders (1942).

6 favorite votes.  

Hybrid Lutea, Tree peony.  Dark red, dark brown shading.  Large, single to semi-double bloom form.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1941).

6 favorite votes.  

Hybrid lactiflora.   Ernest Flint Kelsey (1938).

6 favorite votes.  

Hybrid lactiflora.  Dark red.  Double, bomb bloom form.  Midseason.  Height of 30" to 32" (75 to 80 cm).   Robert William Tischler (1999).

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

6 favorite votes.  

Hybrid lactiflora.  White, light yellow center.  Large, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.   Dr. John H. Neeley (1930).

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.  Deep pink and light pink.  Various colours on same plant, also white..  Moderate fragrance.  Large, double, bomb bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 28" (up to 70 cm).   Carl G. Klehm (1960).

6 favorite votes.  

Species, Tree peony.  Crimson, brown shading.  Medium, single bloom form.  USDA zone 6b through 9b (default).  Height of 5½' to 6' (165 to 185 cm).   Père Jean Marie Delavay (1884).

6 favorite votes.  

Hybrid lactiflora.  Dark red, brown shading.  Staminoids tipped yellow.  Single, Japanese (anemone, imperial) bloom form.  USDA zone 2a and warmer.  Height of up to 3' (up to 90 cm).   Myron D. Bigger (1959).

6 favorite votes.  

Hybrid lactiflora.  Crimson.  Strong fragrance.  Double bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).   Pfeiffer Nursery (1937).

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.