The Zhongshushu 種樹書 "Tree nursery" is a text on raising trees allegedly compiled by the Tang period 唐 (618-907) scholar Guo Tuotuo 郭橐駝 who is known from a novella-style biography (Guo Tuotuo zhuan 郭橐駝傳) written by Liu Zongyuan 柳宗元. The received 3 juan "scrolls" long version is commonly called the Yu Zong 俞宗 version or Yu Zhen 俞貞 version. The collectaneum Yimen guangdu 夷門廣牘 includes a version whose first juan includes the chapter Yueling 月令 "Commands of the months", and the two other juan chapters on beans (dou 豆), grain (mai 麥), mulberry (sang 桑), bamboo and trees (zhumu 竹木), flowers (hua 花), fruits (guo 果) and vegetables (cai 菜). In the book many extraordinary methods of tree cultivation are explained, for example the grafting method (jiajie fangfa 嫁接方法). The Zhongshushu is also included in the collectanea Jujia biyao 居家必備, Shuofu 說郛, Gezhi congshu 格致叢書, Guang baichuan xuehai 廣百川學海, Jianxi cunshe 漸西村舍 and Congshu jicheng 叢書集成.
Except the three-juan version there is also a one-juan version created by the Ming period 明 (1368-1644) commentator Bian Zijing 汴子京. It is included in the collectaneum Nongxue congke 農學叢刻. An annotated modern edition was published in 1962 by the Nongye press 農業出版社.
Source: Li Xueqin 李學勤, Lü Wenyu 呂文鬰 (1996). Siku da cidian 四庫大辭典, vol. 2, p. 1646. Changchun: Jilin daxue chubanshe.