Wow, what a colour! The large, bright pink guard petals (the outer ones) frame a cup around the middle of bright pink staminodes that are edged with gold. Sometimes this produces a inner tuft of further petals.
Peonies will grow in most soils as long as they are not wet, including clay soils. They require a sunny or partially shaded site. Herbaceous peonies need to be planted with the eye (the dormant pink buds) no more than 2.5cm below the surface of the soil. Do not mix manure in the soil before planting as this may rot the eyes.