1、 With what

1. Seedling: the seedling can be used as rootstock, which has high affinity and does not need to worry about rejection. It is conducive to the healing between the two, can ensure a high survival rate, and the root development is relatively developed

2. Vitex: it is an excellent rootstock with strong cold resistance. Some varieties can resist the low temperature of minus 50 degrees. Using it as rootstock can improve the cold resistance and avoid freezing injury. It has strong adaptability, can grow in barren loam, has deep roots, and has strong vitality and tenacity

2、 Grafting method

1. Time: the time of grafting shall be determined according to the grafting method. If branch grafting is carried out before germination in spring, if bud grafting is selected, it can be selected from July to September in autumn

2. Scion: the selected scion can use annual branches to cut more than 2 full buds, which can improve the survival rate. Cut a notch at the bottom, which must be flat

3. Grafting: bud grafting often uses the "t" connection method to insert the intercepted bud into the rootstock, and then tie it tightly outside to play a fixed role