Herbaceous Peony officinalis 'Alba Plena'Paeonia officinalis Alba Plena Herbaceous Peony Alba Plena is a delightful old fashioned variety of garden peony and is rarely offered for sale. It has graced many gardens and is often found around Victorian era homesteads in our area. This beautiful mid season flowering variety has large buds which open with a blush of pink to become large double white blooms. Each tall stem produces two or three flowers, and grow to 1 metre high over dark foliage.