Peony tree is a perennial deciduous shrub, 1 to 1.5 meters in height. Rhizome is fleshy. Branches are short and stout. Alternate leaves are usually biternate compound leaf; handle length is from 6 to 10cm; leaflets are ovate or broad ovate. Large flowers are solitarily grown on the top of the branches; 5 sepals are imbricate and green; petals are 5 or many. Due to variation, most cultivated species are with double flowers, obovate petals, incision on top, and colors of rosy, red, purple, and white; stamens are many, and with red filaments and yellow anthers; pistil are 2 to 5, green, densely pubescent, and with short style, and lobate stigma; faceplate is goblet. Fruits are 2 to 5 follicle-like aggregate fruits, which are oval, green, and covered with brown short hair. Tree peony bloom time is from May to July and fruit time is from July to August. Habitats are sunny and fertile place. And it is often cultivated in gardens.