Hybrid lactiflora.  White, yellow center.  Large, double bloom form.  Late.  USDA zone 2a and warmer.  Height of 25" to 32" (65 to 80 cm).   Hans Peter Sass (1930).

8 favorite votes.  

Hybrid Lutea, Tree peony.  Butter-yellow, pink shading, crimson flares.  Medium, single to semi-double bloom form.  Late.  USDA zone 2a and warmer.   Prof. Arthur Percy Saunders (1944).

8 favorite votes.  

Hybrid lactiflora.  Light pink, lighter edges.  Moderate fragrance.  Double, crown bloom form.  Early-to-mid.  USDA zone 2a and warmer.  Height of up to 32" (up to 80 cm).   Gilbert H. Wild & Son (1949).

8 favorite votes.  

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

8 favorite votes.  

Hybrid lactiflora.  Deep pink, white center, rose-pink shading.  Moderate fragrance.  Double bloom form.  Mid-to-late.  Height of up to 35" (up to 90 cm).   Kelway (and Son).

8 favorite votes.  

Hybrid lactiflora.  White, lemon-yellow center.  Japanese (anemone, imperial) bloom form.  Mid-to-late.  USDA zone 2a and warmer.  Height of up to 35" (up to 90 cm).   Edward Auten, Jr. (1936).

8 favorite votes.  

Hybrid suffruticosa.   Unknown breeder (1896).

8 favorite votes.  

Hybrid / Species crosses.  Coral-pink.  Mild fragrance.  Large, single bloom form.  Early.  Height of 26" to 32" (65 to 80 cm).   William Henry Krekler (1978).

7 favorite votes.  

Hybrid lactiflora.  Crimson - purple.  Moderate fragrance.  Very full bloom form.  Height of up to 3' (up to 90 cm).   Louis-Joseph-Ghislain Parmentier (1850).

7 favorite votes.  

Hybrid lactiflora.   Julian L. Janus.

7 favorite votes.  

Hybrid lactiflora.  Crimson, purple shading.  Rose fragrance.  Large, double bloom form.  USDA zone 2a and warmer.   Unknown breeder (1903).

7 favorite votes.  

Hybrid lactiflora.  Pink, ages to white .  None / no fragrance.  Single bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 39" (up to 100 cm).   Auguste Dessert (1905).

7 favorite votes.  

Hybrid lactiflora.  Light pink.  None / no fragrance.  Large, double bloom form.  Late.  Height of up to 28" (up to 70 cm).   Ben Gilbertson (1970).

7 favorite votes.  

Tree peony.  Red, ages to purple.  Early.  USDA zone 2a and warmer.   Unknown Chinese Breeder(s).

7 favorite votes.  

Hybrid lactiflora.  Red.  Large, double bloom form.  Midseason.  Height of up to 28" (up to 70 cm).   Arthur L. Murawska (1959).

7 favorite votes.  

Hybrid lactiflora.  Light pink, cream center.  Large, double bloom form.  Late midseason.   William Henry Krekler (1958).

7 favorite votes.  

Hybrid lactiflora.  Crimson, yellow center.  Medicinal fragrance.  Medium, Japanese (anemone, imperial) bloom form.  Midseason.  USDA zone 2a and warmer.  Height of up to 43" (up to 110 cm).   Unknown Japanese Breeder(s) (1893).

7 favorite votes.  

Hybrid lactiflora.  Carmine-pink, pink center.  Staminoids edged and tipped yellow.  Large, Japanese (anemone, imperial) bloom form.  Midseason.  Height of up to 43" (up to 110 cm).   Col. Jesse C. Nicholls (1941).

7 favorite votes.  

Hybrid suffruticosa.  Rose-pink or light pink, lilac shading.  Strong fragrance.  Very large, semi-double to double, flat bloom form.  Early.  
Height: up to 6'7" (up to 200cm).   Unknown Chinese Breeder(s) (1794).

7 favorite votes.  

Hybrid / Species crosses.  Yellow.  Single bloom form.   Prof. Arthur Percy Saunders (1932).

7 favorite votes.  

Hybrid lactiflora.   Darwin M. Andrews (1925).

7 favorite votes.  

Hybrid lactiflora, Unknown.  Rose-pink.  Prominent yellow stamens mixed with bright pink stigmas in center.  Medium, semi-double, cupped bloom form.  Prolific, Very early.   Prof. Arthur Percy Saunders (1921).

7 favorite votes.  

Hybrid lactiflora.  Light pink, ages to cream .  Medium, double bloom form.  Midseason.  

7 favorite votes.  

Hybrid lactiflora.  Rose-pink, lighter center, light purple shading.  Cluster-flowered.  Mild to strong fragrance.  Very large, full, rose bloom form.  Prolific, midseason.  USDA zone 2a and warmer.  Height of up to 6' 8" (up to 205 cm).   Auguste Dessert (1904).

7 favorite votes.