Hybrid Lutea, Tree peony.  Yellow, maroon flares.  Some gold stamens visible, ruffled and notched petals.  Mild, sweet fragrance.  Semi-double to double bloom form.  Midseason.  
Height: up to 42" (up to 105cm).  Width: up to 4½' (up to 135cm).

Hybrid Lutea, Tree peony.  

Hybrid Lutea, Tree peony.  Coral-red and pink, cream undertones, lighter outer petals, maroon flares.  Prominent gold stamens.  None / no fragrance.  
Height: up to 32" (up to 80cm).  

Hybrid / Species crosses.  Rose-red.  Petals notched and ruffled.  Medium, semi-double to double bloom form.  
Height: up to 32" (up to 80cm).  

Hybrid rockii, Tree peony.  Cream, dark purple flares.  Short, wide flares, light yellow stamens in central ring surrounding carpels.  Large, single bloom form.  Mid-to-late.  

Hybrid rockii, Tree peony.  

Hybrid rockii, Tree peony.  White, rose-red center.  Medium to large, crown bloom form.  Mid-to-late.  
Height: up to 4'11" (up to 150cm).  

Hybrid rockii, Tree peony.  Early.  

Hybrid rockii, Tree peony.  Light pink, dark purple flares.  Gold stamens.  Semi-double bloom form.  

Hybrid rockii, Tree peony.  Cream, lilac center.  Large, single bloom form.  Midseason.  
Height: up to 4'11" (up to 150cm).  

Hybrid rockii, Tree peony.  Pink.  Mild to strong fragrance.  Semi-double to double bloom form.  

Hybrid rockii, Tree peony.  

Hybrid rockii, Tree peony.  

Hybrid rockii, Tree peony.  

Hybrid rockii, Tree peony.  

Hybrid rockii, Tree peony.  

Shrub.  Yellow.  Strong fragrance.  Medium, very full (41+ petals), borne mostly solitary bloom form.  Prolific, continuous (perpetual) bloom throughout the season.  
Height: up to 35" (up to 90cm).  

Species, Tree peony.  

Tree peony.  Red.  Prominent gold stamens, notched petals.  Single to semi-double, cupped bloom form.  Mid-to-late.  
Height: up to 35" (up to 90cm).  

Hybrid / Species crosses.  Blush, ages to cream .  Prominent ring of gold stamens surrounding 5-6 light-green carpels; notched petals.  None / no fragrance.  Medium, single, cupped, ruffled bloom form.  
Height: up to 25" (up to 65cm).