Hybrid lactiflora.  Dark red.  Moderate fragrance.  Single bloom form.   Unknown Chinese Breeder(s).

7 favorite votes.  

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

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 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 lactiflora.  Red, purple shading.  Very double, crown bloom form.  Early.   Unknown Chinese Breeder(s).

7 favorite votes.  

Hybrid lactiflora.   Kelway (and Son).

7 favorite votes.  

Hybrid suffruticosa.  Cream, light pink shading.  Double bloom form.  Midseason.   Sir Peter Smithers (2006).

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, 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 lactiflora.  Pink and white.  Strong fragrance.  Midseason.  USDA zone 3b through 9b.  Height of 2' to 3' (60 to 90 cm).   Luc Klinkhamer (1987).

7 favorite votes.  

Hybrid suffruticosa.  Violet-red, fuchsia / magenta shading.  Large, full bloom form.   Joseph Pernet-Ducher (1885).

7 favorite votes.  

Hybrid / Species crosses.  White.  Small to medium, single bloom form.  Late.  USDA zone 2a and warmer.  Height of up to 47" (up to 120 cm).   Prof. Arthur Percy Saunders (1947).

7 favorite votes.  

Hybrid lactiflora.   Joseph Bernstein.

6 favorite votes.  

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

6 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).

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.  Light pink.  Mild fragrance.  Large, double, rose bloom form.  Mid-to-late.  Height of up to 35" (up to 90 cm).   Walter Z. Mains (1955).

6 favorite votes.  

Hybrid lactiflora.   Pfeiffer Nursery (1932).

6 favorite votes.  

Hybrid lactiflora.   D.M. Andrews (1923).

6 favorite votes.  

Hybrid lactiflora.  Pink, yellow undertones, ages to lighter .  Medium, bomb, cupped bloom form.  Early-to-mid.  Height of up to 30" (up to 75 cm).   Robert William Tischler (2000).

6 favorite votes.  

Hybrid lactiflora.  Light pink, yellow center, ages to white .  Strong fragrance.  Large, semi-double bloom form.  Early-to-mid.  USDA zone 6b through 9b (default).  Width of 4' (120 cm). J.R. Mann (1936), Julius J. Van Steen (1936).

6 favorite votes.