Tree peony - Pink butterfly

Rockii tree peony with the following characteristics: single white flower, nuanced with pink in the centre which shades into white at the tips of the petals. In the centre of the corolla is a dark stain that characterises all of the varieties of P. rockii. Very intense scent. Tall, broad shrub with vigorous, upright growth. Very elegant foliage which turns reddish in autumn, Late flowering.