Shrub 1-1.5 m tall. Leaves doubly divided, the individual leaflets stalked, each segment ovate, whitish below. Flowers large, double in cultivars; spring. Fruit a densely hairy follicle. [P. moutan Sims]
Tree peonies are grafted and it is 2-3 years before sale.
P. lutea Franch., Yellow Tree Peony, is occasionally grown, also the earlier and larger flowering variety ludlowii Stern & Taylor, Tibetan Peony, which has 1-2 follicles.
P. ×lemoinei Rehder, a tree peony, is a hybrid between P. lutea and P. suffruticosa and is occasionally grown as the cultivar 'Alice Harding' which has double yellow scented flowers.
The following cultivars are regarded as in the Lutea hybrid tree peony group (see descriptions under cultivar tab): ‘Age of Gold’, ‘Alice Harding’, ‘Banquet’, ‘Chinese Dragon’, ‘Marchioness’, and ‘Souvenir de Maxime Cornu’
Source: (1997). Paeoniaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.