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

9 favorite votes.  

Hybrid / Species crosses.  Apricot or yellow, yellow shading, pink edges.  Semi-double bloom form.  Height of up to 28" (up to 70 cm).   Unknown Japanese Breeder(s) (1954).

9 favorite votes.  

Hybrid suffruticosa.  Dark red.  Semi-double bloom form.  Midseason.  Height of up to 3' (up to 90 cm).   Toichi Domoto (1987).

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.   Julian L. Janus.

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 lactiflora.  Rose-pink, carmine-red center.  Double bloom form.   E. H. Krelage & Zoon (1912).

9 favorite votes.  

Hybrid lactiflora.  Lemon-yellow.  Moderate fragrance.  Semi-double to double, ruffled bloom form.  Early.  Height of up to 35" (up to 90 cm).   Bruce Hamilton.

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.  

Hybrid / Species crosses.  Red, yellow center.  Single bloom form.  Early.  Height of up to 3' (up to 90 cm).   Dr. Earl B.N. White (1954).

9 favorite votes.  

Hybrid lactiflora.  Light pink, rose-pink mottling.  Double bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 35" (up to 90 cm).   B.B. Wright.

9 favorite votes.  Average rating: EXCELLENT.  

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

9 favorite votes.  

Herbaceous species.  White, pink shading.  Single bloom form.  

8 favorite votes.  

Hybrid suffruticosa, Tree peony.  Red to deep pink, purple shading.  None / no fragrance.  Large, semi-double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 4' 11" (150 cm).   Unknown Japanese Breeder(s) (1929).

8 favorite votes.  

Hybrid lactiflora.  Light pink, darker center.  Medium, full, crown bloom form.  Late midseason.  USDA zone 2a and warmer.   Jacques Calot (1861).

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.  

Hybrid lactiflora.  Red.  Double bloom form.  

8 favorite votes.