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 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 lactiflora.  Rose-pink, cream center, buff center, rose-pink center.  Mild fragrance.  Medium, double bloom form.  Midseason.  Height of up to 39" (up to 100 cm).   Unknown Chinese Breeder(s).

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

6 favorite votes.  

Hybrid rockii, Tree peony.  Light pink, dark red flares, ages to white .  Moderate fragrance.  Large, semi-double bloom form.  Midseason.   Chen Dezhong (2002).

6 favorite votes.  

Hybrid lactiflora.   Julian L. Janus.

6 favorite votes.  

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

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.  Pink, purple shading, yellow center.  Moderate fragrance.  Single bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).   Max Josef Goos (1912), August Koenemann (1912).

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.  French white or blush white, ages to white .  Center flower is double; side shoots produce semi-double, saucer-shaped blooms showing golden stamens.  Moderate fragrance.  Large, semi-double to double, cupped bloom form.  Early-to-mid.  USDA zone 2a and warmer.  
Height: up to 3' (up to 90cm).   Kelway (and Son) (1902).

6 favorite votes.  Average rating: EXCELLENT.  

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

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.  

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

6 favorite votes.  

Species, Tree peony.  Color varies from purple-crimson to peach; yellow and white forms are classed separately.  Medium, single bloom form.  USDA zone 6b through 9b (default).  
Height: 5½' to 6' (165 to 185cm).   Père Jean Marie Delavay (1884).

6 favorite votes.  

Herbaceous species, Species.  Red.  Single bloom form.  USDA zone 2a and warmer.  

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 lactiflora.  Dark red.  Strong fragrance.  Early.  USDA zone 2a and warmer.  

6 favorite votes.