Hybrid lactiflora.  Pink.  Double bloom form.  USDA zone 2a and warmer.  

4 favorite votes.  

Hybrid lactiflora.  White, cream shading.  Large, double bloom form.  Late.  USDA zone 2a and warmer.   Victor Lemoine & Sons (1933).

4 favorite votes.  

Hybrid suffruticosa, Tree peony.  Pink.  Mild fragrance.  Mid-to-late.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s).

4 favorite votes.  

Hybrid Lutea, Tree peony.  Dark red.  Large, single to semi-double bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of 3' to 4' (90 to 120 cm).   Prof. Arthur Percy Saunders (1935).

4 favorite votes.  

Hybrid suffruticosa.  Pink, lilac shading, darker undertones.  Mild fragrance.  Double, Japanese (anemone, imperial) bloom form.  Early.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s) (1973).

4 favorite votes.  

Hybrid Lutea.  White, purple flares.  Mild fragrance.  Single bloom form.  Late midseason.  Height of up to 44" (up to 110 cm).   David Reath (1976).

4 favorite votes.  

Hybrid suffruticosa, Tree peony.  Light pink, dark red flares.  Large, semi-double, cupped bloom form.  Early.  Height of up to 4' 11" (up to 150 cm).   John W. & Dot M. McFarlane (1991).

4 favorite votes.  

Hybrid / Species crosses.  Red, yellow center.  Single bloom form.  Very early.  USDA zone 2a and warmer.  Height of up to 33" (up to 85 cm).   Edward Auten, Jr. (1941).

4 favorite votes.  

Hybrid suffruticosa.  Cream, light purple highlights, dark purple flares.  Single bloom form.   Elwyn Chow (2005).

4 favorite votes.  

Hybrid lactiflora.  Blush, ages to white .  Strong, rose fragrance.  Double bloom form.  
Height: 20" to 25" (50 to 65cm).   Edward Auten, Jr. (1935).

4 favorite votes.  

Hybrid / Species crosses.  Light pink.  Single bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 28" (up to 70 cm).   William Henry Krekler (1978).

4 favorite votes.  

Hybrid lactiflora.  Cherry-red, rose-red center.  Staminoids tipped yellow.  Moderate fragrance.  Single, cupped, Japanese (anemone, imperial) bloom form.  Late.  Height of up to 35" (up to 90 cm).   Kelway (and Son) (1930).

4 favorite votes.  

Intersectional Hybrid / Itoh.  Apricot, yellow shading, pink outer petals, red undertones.  Semi-double to double bloom form.  Height of 26" to 28" (65 to 70 cm).   Roger F. Anderson (1992).

4 favorite votes.  

Hybrid suffruticosa.   Unknown Japanese Breeder(s) (1897).

4 favorite votes.  

Hybrid suffruticosa.  Pink, lilac shading, purple flares.  Medium to large, double, crown bloom form.  Midseason.   Unknown Chinese Breeder(s) (1990).

4 favorite votes.  

Hybrid suffruticosa, Tree peony.  Rose-pink, lilac shading, purple flares.  Mild, rose fragrance.  Very large, semi-double to double bloom form.  Height of up to 8' (up to 245 cm).  Width of up to 10' (up to 305 cm). Unknown Chinese Breeder(s) (1789).

4 favorite votes.  

Herbaceous species, Species.  Pink.  Small to medium, single to semi-double bloom form.  Very early.  Height of 18" (45 cm).  

4 favorite votes.  

Hybrid lactiflora.  Deep pink to red.  Japanese (anemone, imperial) bloom form.  Height of up to 30" (up to 75 cm).   Myron D. Bigger (1984).

4 favorite votes.  

Hybrid / Species crosses.  Pink.  Semi-double, flat bloom form.  Early.  USDA zone 2a and warmer.  Height of up to 30" (up to 75 cm).   David Reath (1974).

4 favorite votes.  

Hybrid suffruticosa.  Red.  Medium, single to semi-double bloom form.  Repeats.   Unknown Japanese Breeder(s) (1940).

4 favorite votes.  

Hybrid lactiflora.   Alonzo B. Franklin (1933).

4 favorite votes.  

Tree peony.  White.  Medium, semi-double bloom form.  Late midseason.  USDA zone 2a and warmer.   Unknown Japanese Breeder(s).

4 favorite votes.  

Hybrid lactiflora.  Cream, salmon-pink shading, pink outer petals.  Full, bomb bloom form.  Early.  Height of 30" to 40" (75 to 100 cm).   Eugene H. Lins (1962).

4 favorite votes.  

Hybrid lactiflora.  Red.  Double bloom form.  USDA zone 2a and warmer.   Egbert Jerome Shaylor (1916).

4 favorite votes.