The special characteristics that set this species apart are: the single, lotus-shaped flower, the upright shrub, the long, non-lobed leaves in bright green. Flowering for this species is early and very prolonged.
Osti tree peony with the following characteristics: single flower, normally with twelve petals, in white, sometimes flushed with pink. Very delicate scent, typical of the peony.
Osti tree peony with the following characteristics: single flower in pinkish white. Very delicate scent, typical of the peony
Ostii tree peony with the folowing characteristics: single flower, normally with 12 pink petals, with a very delicate scent, typical of the peony.