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.   Julian L. Janus.

5 favorite votes.  

Hybrid lactiflora.  Cream or white, light yellow center.  Medium, double bloom form.  Late midseason.  USDA zone 2a and warmer.   Victor Lemoine (1909).

5 favorite votes.  

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

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.  

Unknown.  USDA zone 2a and warmer.  

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.  Deep pink.  Double bloom form.  Early.   Lyman D. Glasscock (1964).

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.  White.  Large, double, cupped bloom form.  Very early.  USDA zone 2a and warmer.   Edouard Doriat (1924).

5 favorite votes.  

Hybrid lactiflora.   James Pillow (1924).

5 favorite votes.  

Hybrid lactiflora.  White, yellow center.  Single bloom form.  Midseason.  Height of up to 3' (up to 90 cm).   Abraham Newhouse (1939).

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 / Species crosses.  Red.  Small, single bloom form.  Early.  Height of 2' to 25" (60 to 65 cm).   Robert William Tischler (1995).

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

5 favorite votes.  

Hybrid lactiflora.  Pink, fuchsia / magenta shading, silver(y) edges.  Double bloom form.  Late midseason.   Col. Jesse C. Nicholls (1956).

5 favorite votes.