Hybrid lactiflora.  White.  Strong, rose fragrance.  Medium to large, full bloom form.  Mid-to-late.  USDA zone 2a and warmer.  Height of 30" to 3' (75 to 90 cm).   Lyman Cousins (1946).

7 favorite votes.  

Hybrid suffruticosa, Tree peony.  White.  Mild fragrance.  Semi-double bloom form.  Early.  USDA zone 2a and warmer.  

7 favorite votes.  

Hybrid suffruticosa, Tree peony.  White, blush shading.  Mild, citrus fragrance.  Large, double bloom form.  Midseason.  USDA zone 2a and warmer.  
Height: up to 8' (up to 245cm).  Width: up to 7' (up to 215cm). Unknown Chinese Breeder(s).

7 favorite votes.  

Tree peony.  Yellow.  Mild fragrance.  Mid.  USDA zone 2a and warmer.  

7 favorite votes.  

Intersectional Hybrid / Itoh.  White, lavender flares.  None to mild fragrance.  Semi-double bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 2' (up to 60 cm).   Roger F. Anderson (1984).

7 favorite votes.  

Hybrid / Species crosses.  Dark red.  Wine-red.  Semi-double to double, Japanese (anemone, imperial) bloom form.  Mid.  USDA zone 2a and warmer.  Height of up to 30" (up to 75 cm).   William Henry Krekler (1977).

7 favorite votes.  

Hybrid lactiflora.  Deep pink.  Moderate fragrance.  Double, bomb bloom form.  Midseason.  Height of up to 3' (up to 90 cm).   George E. Winchell (1946).

7 favorite votes.  

Hybrid lactiflora.  Ruby-red.  Mild fragrance.  Medium to large, double, bomb bloom form.  Late midseason.  USDA zone 6b through 9b (default).  Height of up to 3' (up to 90 cm).   François-Félix Crousse (1840-1925) (1881).

7 favorite votes.  Average rating: EXCELLENT-.  

Hybrid Lutea, Tree peony.  Pink, yellow undertones, deep pink veining, purple flares.  Moderate fragrance.  Single, ruffled bloom form.  Mid.  USDA zone 2a and warmer.  Height of up to 5' (up to 150 cm).   Prof. Arthur Percy Saunders (1948).

7 favorite votes.  

Hybrid Lutea, Tree peony.  Butter-yellow, red flares.  Strong, sweet fragrance.  Semi-double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 5' (150 cm).   Prof. Arthur Percy Saunders (1952).

7 favorite votes.  

Hybrid lactiflora.  Dark red.  Double bloom form.  Late midseason.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Edward Auten, Jr. (1952).

7 favorite votes.  

Hybrid / Species crosses.  Red.  Yellow anthers, red stamens.  None to mild fragrance.  Very large, single bloom form.  Early.  
Height: up to 32" (up to 80cm).   Lyman D. Glasscock (1931).

7 favorite votes.  

Hybrid lactiflora.  Cerise, purple shading.  Mild fragrance.  Medium to large, double, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.  
Height: up to 35" (up to 90cm).   Jacques Calot (1863).

7 favorite votes.  

Hybrid lactiflora.   Berneche (1924).

7 favorite votes.  

Hybrid lactiflora.   Peter Barr.

7 favorite votes.  

Hybrid lactiflora.   Peter Barr.

7 favorite votes.  

Tree peony.  Pink.  Mild fragrance.  Mid.  USDA zone 2a and warmer.  

7 favorite votes.  

Hybrid lactiflora.  Light pink.  Large, double, rose bloom form.  Midseason.  USDA zone 2a and warmer.  Height of 26" to 32" (65 to 80 cm).   Carl G. Klehm (1952).

7 favorite votes.  

Hybrid lactiflora.  Light pink, deep pink center, light yellow undertones.  Mild fragrance.  Double bloom form.  Mid-to-late.  Height of up to 30" (up to 75 cm).   Allen J. Wild (1952).

7 favorite votes.  

Hybrid lactiflora.  Pink, deep pink undertones.  Mild, sweet fragrance.  Double bloom form.  Late.  Height of up to 35" (up to 90 cm).   Don Hollingsworth (1973).

7 favorite votes.  

Hybrid / Species crosses.  Rose-pink, yellow center.  Small, single, cupped bloom form.  Very early.  Height of up to 14" (up to 35 cm).   William Henry Krekler (1985).

7 favorite votes.  

Hybrid suffruticosa.  Light pink.  Large, semi-double bloom form.   Unknown Japanese Breeder(s) (1893).

7 favorite votes.  

Tree peony.  White.  USDA zone 2a and warmer.  

7 favorite votes.  

Hybrid lactiflora.  Deep pink.  Double bloom form.  Mid-to-late.   Eugene H. Lins (1942).

7 favorite votes.