Hybrid rockii, Tree peony.  White, dark purple flares.  Mild, sweet fragrance.  Very large, semi-double to double bloom form.  Early.  
Height: up to 4' (up to 120cm).  Width: up to 3' (up to 90cm).

Intersectional Hybrid / Itoh.  Yellow.  Semi-double to double bloom form.  Midseason.  
Height: up to 32" (up to 80cm).  Width: up to 4' (up to 120cm).

Intersectional Hybrid / Itoh.  Lemon-yellow, mauve shading, fuchsia / magenta stripes.  Golden stamens.  Semi-double to double, ruffled bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Intersectional Hybrid / Itoh.  Red or crimson.  Gold stamens visible.  Medium to large, semi-double to double bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Hybrid / Species crosses.  Dark red or maroon.  Very double bloom form.  Midseason.  
Height: up to 40" (up to 100cm).  Width: up to 4' (up to 120cm).

Intersectional Hybrid / Itoh.  Pink, ages to lighter .  Golden stamens visible.  Medium, semi-double to double bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Intersectional Hybrid / Itoh.  Raspberry red.  Yellow stamens.  Large, semi-double to double bloom form.  Prolific.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Hybrid lactiflora.  Light pink and blush, ages to white .  Medium to large, double bloom form.  Mid-to-late.  
Height: 28" to 31" (70 to 80cm).  

Intersectional Hybrid / Itoh.  Yellow.  Gold stamens.  Medium, semi-double to double, ruffled bloom form.  Early-to-mid.  
Height: 5' to 5'10" (150 to 180cm).  

Hybrid lactiflora.  Deep pink or cerise, lilac shading.  Prominent boss of gold stamens.  Medium to large, single to semi-double bloom form.  Midseason.  
Height: 32" to 35" (80 to 90cm).  

Intersectional Hybrid / Itoh.  Deep pink and fuchsia / magenta, crimson edges.  Yellow stamens.  Very large, semi-double to double bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Intersectional Hybrid / Itoh.  Peach - pink, deep pink flares.  Yellow stamens.  Semi-double bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Intersectional Hybrid / Itoh.  Lemon-yellow.  Golden stamens visible.  Medium to large, semi-double to double bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).

Hybrid / Species crosses.  Rose-pink, light pink edges.  Medium to large, semi-double to double, ruffled bloom form.  Early.  
Height: up to 35" (up to 90cm).  

Hybrid rockii, Tree peony.  Ruby-red.  Gold stamens.  Mild fragrance.  Semi-double to double bloom form.  Early.  
Height: up to 47" (up to 120cm).  

Hybrid / Species crosses.  Lilac-pink or rose-pink.  Double, ruffled bloom form.  Midseason.  
Height: up to 34" (up to 85cm).  Width: up to 46" (up to 115cm).

Hybrid / Species crosses.  Rose-pink or deep pink.  Double, bomb, ruffled bloom form.  Very early.  
Height: up to 28" (up to 70cm).  Width: up to 38" (up to 95cm).

Hybrid / Species crosses.  Carmine-pink or cherry-red.  Double, ruffled bloom form.  Midseason.  
Height: up to 34" (up to 85cm).  Width: up to 44" (up to 110cm).

Hybrid / Species crosses.  Light pink or seashell-pink, ages to lighter .  Gold stamens.  Single to semi-double bloom form.  
Height: up to 30" (up to 75cm).  Width: up to 40" (up to 100cm).

Hybrid / Species crosses.  Pink or salmon-pink.  Prominent golden stamens.  Large, semi-double, cupped bloom form.  Midseason.  
Height: up to 30" (up to 75cm).  Width: up to 40" (up to 100cm).

Hybrid / Species crosses.  Cream.  Gold stamens.  Large, semi-double to double, ruffled bloom form.  Early-to-mid.  
Height: up to 32" (up to 80cm).  Width: up to 42" (up to 105cm).

Hybrid / Species crosses.  

Hybrid rockii, Tree peony.  White, dark purple flares.  Gold stamens.  Strong fragrance.  Single bloom form.  Early.  
Height: 47" to 4'11" (120 to 150cm).  

Intersectional Hybrid / Itoh.  Lemon-yellow and peach, cerise shading, darker edges.  Yellow stamens visible.  Double, bomb bloom form.  USDA zone 3a through 8a.  
Height: up to 3' (up to 90cm).  Width: up to 3' (up to 90cm).