Hybrid lactiflora.  White.  Single bloom form.  USDA zone 2a and warmer.   Edward Auten, Jr. (1933).

9 favorite votes.  

Hybrid / Species crosses.  Light yellow, yellow center, ages to white .  Medium, single bloom form.  Very early.  USDA zone 2a and warmer.  Height of 28" to 32" (70 to 80 cm).  Width of 4' (120 cm). Dr. Earl B.N. White (1954).

9 favorite votes.  Average rating: EXCELLENT.  

Hybrid suffruticosa, Tree peony.  Seashell-pink, red flares.  Single, ruffled bloom form.  Early.  USDA zone 2a and warmer.  Height of 4' (120 cm).   William H. Gratwick III (1959).

9 favorite votes.  

Hybrid lactiflora.  Pink, cream center.  Japanese (anemone, imperial) bloom form.  Mid.  USDA zone 2b through 9b.  Height of up to 32" (up to 80 cm).   William Henry Krekler (1985).

9 favorite votes.  

Hybrid / Species crosses.  Coral-red.  Moderate fragrance.  Large, semi-double, flat, ruffled bloom form.  Early.  USDA zone 2a and warmer.  Height of 32" to 47" (80 to 120 cm).   Samuel E. Wissing (1970).

9 favorite votes.  

Hybrid / Species crosses.   Julian L. Janus.

9 favorite votes.  

Hybrid suffruticosa, Tree peony.  Light green.  Strong fragrance.  Small to medium, double, crown bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 47" (up to 120 cm).  Width of 2' (60 cm). Unknown Chinese Breeder(s).

9 favorite votes.  

Hybrid / Species crosses.  Scarlet, yellow center.  Small, single, flat bloom form.  Early-to-mid.  Height of 2' to 28" (60 to 70 cm).   Don Hollingsworth (1984).

9 favorite votes.  

Hybrid lactiflora.  White.  Medicinal fragrance.  Medium to large, Japanese (anemone, imperial) bloom form.   Unknown Japanese Breeder(s) (1909).

9 favorite votes.  

Hybrid lactiflora.  Dark red, dark red center.  Wine-red. Cream-tipped wine-red petaloids.  Medium to large, Japanese (anemone, imperial) bloom form.  Early.  USDA zone 2a and warmer.  Height of 34" (85 cm).   William Henry Krekler (1965).

9 favorite votes.  

Hybrid / Species crosses.  Rose-pink.  Moderate fragrance.  Semi-double, cupped bloom form.  Late.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1934).

9 favorite votes.  

Herbaceous species, Species.  Red.  Single bloom form.  Mid.  USDA zone 8b through 10b.  Height of 2' (60 cm).  Width of 2' (60 cm). Unknown breeder (1797).

9 favorite votes.  

Hybrid lactiflora.  Light pink, cream undertones.  Mild fragrance.  Semi-double bloom form.  Midseason.  Height of up to 37" (up to 95 cm).   E.L. "Roy" Pehrson (1980).

9 favorite votes.  

Species, Tree peony.  Yellow.  Medium, single bloom form.  USDA zone 6b through 9b (default).  Height of 8' to 10' (245 to 305 cm).  Width of 10' to 13' (305 to 395 cm). Frank Ludlow (1936), Major George Sherriff (1936).

9 favorite votes.  

Species, Tree peony.  White, light pink shading.  Medium to large, single bloom form.  USDA zone 2a and warmer.  Height of up to 5' (up to 150 cm).  

9 favorite votes.  

Hybrid lactiflora.  Pink, lilac shading.  Bright yellow collar, deep pink bonnet edged red.  Moderate fragrance.  Small to medium, double, crown, Japanese (anemone, imperial) bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of up to 30" (up to 75 cm).   Jacques Calot (1861).

9 favorite votes.  

Hybrid Lutea, Tree peony.  USDA zone 2a and warmer.   David Reath (1983).

9 favorite votes.  

Hybrid Lutea.  Crimson, dark brown shading.  Single to semi-double bloom form.   Prof. Arthur Percy Saunders (1940).

9 favorite votes.  

Tree peony.  Fuchsia / magenta.  USDA zone 2a and warmer.  

9 favorite votes.  

Hybrid / Species crosses.  Red, light yellow center.  None / no fragrance.  Large, single bloom form.  Early-to-mid.  Height of up to 3' (up to 90 cm).   Don Hollingsworth (1980).

8 favorite votes.  

Hybrid Lutea, Tree peony.  Red, golden-yellow undertones, dark red flares.  Semi-double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 3' to 4' (90 to 120 cm).   Prof. Arthur Percy Saunders (1939).

8 favorite votes.  

Japanese, Tree peony.  Pink.  Double bloom form.  USDA zone 2a and warmer.   Unknown Japanese Breeder(s).

8 favorite votes.  

Hybrid lactiflora.  Pink, ages to cream.  Moderate fragrance.  Large, double bloom form.  Late.  USDA zone 6b and warmer.  Height of up to 39" (up to 100 cm).   Kersbergen (1910).

8 favorite votes.  

Herbaceous species, Species.  Red.  Citrus fragrance.  Single bloom form.  Early.  USDA zone 2a and warmer.  Height of 20" to 2' (50 to 60 cm).  

8 favorite votes.