The hybrids of these two species have intermediate characteristics that make the plants very interesting from a botanical and landscaping viewpoint. In fact, they are normally very large, vigorous and resistant, with intermediate flowering time, large flowers, single with an undefined stain at the base like in the rockii peony, but shaded up towards the petal tips. The leaves also often have a different shape from those of their parents, wider and darker than those of the rockii peony, which in autumn sometimes turn into vivid colours. The plants are obtained by natural hybridisation, by way of a long and patient propagation using the seed and selecting the progeny: this makes each one a unique and unrepeatable example which may be distinguished even by just a detail in the flower or the leaves.
Hybrid characterised by large, single flowers generally in bright white with red or purple streaking from the base up to the tips. Vigorous growth, large and resistant shrub, intermediate flowering time.
Hybrid characterised by large, single flowers, usually lighter or deeper pink with purple streaks, sometimes very dark from the base to the tips. Vigorous growth, large and resistant shrub, intermediate flowering time.