Hybrid lactiflora.  White.  Double bloom form.  USDA zone 2a and warmer.   Walter J. Guille (1928).

5 favorite votes.  

Hybrid lactiflora.  Light pink.  Yellow collar.  Large, double bloom form.  Mid-to-late.  USDA zone 2a and warmer.  Height of up to 3' (up to 90 cm).   Hans Peter Sass (1930).

5 favorite votes.  

Hybrid / Species crosses, Hybrid lactiflora.  Deep pink, yellow center, ages to lighter.  Light red.  Medium to large, semi-double, Japanese (anemone, imperial) bloom form.  USDA zone 2a and warmer.   Walter Z. Mains (1956).

5 favorite votes.  

Hybrid lactiflora.  Rose-red.  Single bloom form.  USDA zone 2a and warmer.   Auguste Dessert (1884).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Single bloom form.  USDA zone 2a and warmer.   Peter Barr.

5 favorite votes.  

Hybrid suffruticosa, Tree peony.  Light pink, dark red flares, lavender highlights.  Large, double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 4' (120 cm).   Unknown French Breeder(s) (1899).

5 favorite votes.  

Hybrid lactiflora.  Red.  Double bloom form.  Midseason.  Height of up to 28" (up to 70 cm).   Unknown breeder.

5 favorite votes.  

Unknown.  USDA zone 2a and warmer.  

5 favorite votes.  

Hybrid / Species crosses.  Deep pink, white streaks, stripes, flecks, yellow center.  Semi-double, ruffled bloom form.   Lyman D. Glasscock (1950).

5 favorite votes.  

Hybrid Lutea.  Yellow.   William J. Seidl (2001).

5 favorite votes.  

Hybrid lactiflora.  White, golden-yellow center.  Moderate fragrance.  Single, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Millet & Son (1928).

5 favorite votes.  

Hybrid lactiflora.  Pink.  Large, double bloom form.  USDA zone 2a and warmer.   Alonzo B. Franklin.

5 favorite votes.  

Hybrid / Species crosses.  Dark red.  Single bloom form.   William Henry Krekler (1977).

5 favorite votes.  

Tree peony.  White, green shading.  Mild to strong fragrance.  Double bloom form.  Late.  USDA zone 2a and warmer.  
Height: 4' to 5' (120 to 150cm).  

5 favorite votes.  

Hybrid lactiflora.  Pink.  Mild fragrance.  Full, rose bloom form.  Mid.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Auguste Dessert (1922).

5 favorite votes.  

Hybrid lactiflora.  Deep pink, cream center.  Double bloom form.  Height of up to 39" (up to 100 cm).   Heinz Klose (1972).

5 favorite votes.  

Fernleaf Hybrid, Hybrid / Species crosses.  Red.  Strong fragrance.  Medium to large, single bloom form.  Early.  USDA zone 2a and warmer.  Height of 2' to 30" (60 to 75 cm).   Prof. Arthur Percy Saunders (1953).

5 favorite votes.  

Hybrid lactiflora.  Crimson - pink, cream undertones, silver(y) edges, salmon-pink center.  Tyrian rose. Violet-pink center.  Moderate fragrance.  Medium, double, bomb bloom form.  Midseason.  USDA zone 2a and warmer.   Modeste Guérin (1850).

5 favorite votes.  

Hybrid lactiflora.  Pink, ages to light pink .  Double bloom form.  Midseason.   Eugene H. Lins (1967).

5 favorite votes.  

Hybrid / Species crosses.  Red.  Single bloom form.  Height of up to 29" (up to 75 cm).   William Henry Krekler (1978).

5 favorite votes.  

Hybrid lactiflora.  Dark red.  Medium, single bloom form.  Prolific.   Edward Auten, Jr. (1930).

5 favorite votes.  

Hybrid lactiflora.  Red.  Semi-double bloom form.  USDA zone 2a and warmer.   Edward Auten, Jr. (1951).

5 favorite votes.  

Hybrid / Species crosses.  Red, yellow center.  Semi-double bloom form.  Mid-to-late.  Height of 28" to 3' (70 to 90 cm).   Don Hollingsworth (1976).

5 favorite votes.  

Hybrid rockii.  White, light pink shading, dark brown flares.  Moderate fragrance.  Semi-double bloom form.  Early.   Chen Dezhong (1992).

5 favorite votes.