1. Jujube trees can be grafted with persimmon trees. The soft jujube tree is also known as the black jujube tree, and its scientific name is Junqianzi. It has a well-developed root system and strong adaptability. It is a good rootstock for grafting persimmon trees.

2. Jujube trees generally grow from April 15th to May 10th. There are three commonly used methods: ramification, grafting and cutting, but ramification is the most commonly used.

3. There are many methods for grafting jujube trees, and you can choose according to the actual situation. For example, there are skin splicing, split splicing, etc.