Intersectional Hybrid / Itoh.  Yellow, red streaks, stripes, flecks.  Single to semi-double bloom form.  Height of up to 38" (up to 95 cm).   Roger F. Anderson (2004).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Strong, rose fragrance.  Double, rose bloom form.  Very early.  USDA zone 2a and warmer.   Arthur L. Murawska (1951).

5 favorite votes.  

Hybrid lactiflora.  Crimson, lavender highlights.  Yellow stamens.  None to mild fragrance.  Very large, double bloom form.  Midseason.   Auguste Dessert (1915).

5 favorite votes.  

Hybrid Lutea, Tree peony.  Dark red.  Golden stamens.  Moderate fragrance.  Large, semi-double, ruffled bloom form.  Early-to-mid.  USDA zone 2a and warmer.  
Height: 3' to 4' (90 to 120cm).   Nassos Daphnis (1974).

5 favorite votes.  

Hybrid lactiflora.   Ernest Flint Kelsey (1940).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Small, single bloom form.  Late.  USDA zone 2a and warmer.  Height of 32" (80 cm).   Millet & Son.

5 favorite votes.  

Hybrid lactiflora.  Light pink, ages to white .  Double bloom form.   Peter Barr (1909), H.A. Terry (1905).

5 favorite votes.  

Hybrid lactiflora.  Light pink.  Moderate fragrance.  Double bloom form.  Late.  USDA zone 2a and warmer.   Victor Lemoine & Sons (1925).

5 favorite votes.  

Hybrid suffruticosa.  Crimson, darker flares, yellow center.  Single bloom form.   Philipp Von Siebold (1844).

5 favorite votes.  

Hybrid Lutea, Tree peony.  Butter-yellow, red flares.  Semi-double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 32" to 43" (80 to 110 cm).   Prof. Arthur Percy Saunders (1949).

5 favorite votes.  

Tree peony.  Red.  Rose bloom form.  USDA zone 2a and warmer.  

5 favorite votes.  

Hybrid suffruticosa, Tree peony.  Red, purple shading, dark purple undertones.  Medium, semi-double to double, rose bloom form.  Midseason.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s) (1968).

5 favorite votes.  

Hybrid lactiflora.  Light pink, rose-pink shading.  Mild to strong, sweet fragrance.  Large, double, rose bloom form.  Mid-to-late.  Height of up to 33" (up to 85 cm).   George C. Thurlow (1921).

5 favorite votes.  

Hybrid lactiflora.  Cream, yellow center.  Cluster-flowered.  None to mild fragrance.  Medium, semi-double, rose bloom form.  Midseason.  Height of up to 32" (up to 80 cm).   François-Félix Crousse (1840-1925) (1888).

5 favorite votes.  

Hybrid suffruticosa.  White, mauve flares.  Cream bonnet.  Very large, double bloom form.  USDA zone 2a and warmer.   Robert Fortune.

5 favorite votes.  

Hybrid suffruticosa, Tree peony.  Pink, darker flares.  Single bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of up to 4' (up to 120 cm).   William H. Gratwick III (1980).

5 favorite votes.  

Hybrid rockii.  Pink, mauve shading.  Large, double bloom form.  Height of 3' (90 cm).   Chen Dezhong (1994).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Moderate fragrance.  Large, semi-double, flat bloom form.  Midseason.  Height of 31" to 33" (80 to 85 cm).   Roy G. Klehm (1981).

5 favorite votes.  

Hybrid suffruticosa.   E. H. Krelage & Zoon (1867).

5 favorite votes.  

Hybrid / Species crosses.  Cherry-red.  Semi-double bloom form.  Late.   Prof. Arthur Percy Saunders (1934).

5 favorite votes.  

Hybrid / Species crosses.  Dark red.  Large, full bloom form.  Early.   Edward Auten, Jr. (1962).

5 favorite votes.  

Hybrid lactiflora.  Deep pink, cream undertones.  Moderate fragrance.  Single bloom form.  Early-to-mid.  Height of 32" to 3' (80 to 90 cm).   William Henry Krekler (1980).

5 favorite votes.  

Hybrid lactiflora.   Kelway (and Son) (1929).

5 favorite votes.  

Hybrid Lutea, Tree peony.  Peach, orange-red shading.  Single bloom form.  Midseason.   Nassos Daphnis (1947).

5 favorite votes.