1. Upper basin

In the basin soil, we can add some substances, such as ash powder and other things containing potassium fertilizer, so as to speed up the growth process of roots. The formation of thick roots is expected. Generally speaking, there are four to five-year-old jasmine. Its main root length will be as thick as thumb. At this time, we can carry out the operation of pot. It's the day before the late autumn, or the day before the Qingming Festival. At this time, all we have to do is dig out the whole tree, shake the loose soil attached to the roots, carefully study the growth direction of the roots, determine the future roots, and cut off all the lateral roots and fibrous roots except the roots we need. The shape of the branches must be cut carefully, so that the shape in the future will remain standard. Two thirds of this major root is buried in the soil and the rest in the air. The next year, the basin will be washed with water to slowly expose the trunk of the buried soil. Do not cut off many roots and rinse them in time until they reach the desired effect

2. Selection

We can use cutting to cultivate coarse roots. The time is relatively broad. This operation can be carried out in spring, summer and autumn. If the branches we need are semi lignified and inserted into sand and soil to maintain water, we can root in about 15 days. If long branches are buried in the sand without carving, they can take root in about 40-50 days, and then separate from the mother plant in the next spring to cultivate plants with thick roots