Peony

Herbaceous peonies differ from woody-stemmed tree peonies in that they die back to ground level every winter. The successful crossing of tree and herbaceous peonies by plant breeders produced intersectional (Itoh) hybrids. Lately they are more readily available, but still expensive.
Group: Herbaceous perennial
Flowering time: Mid-spring to early summer
Planting time: Autumn
Height and Spread: Variable
Hardiness: Hardy