If you want to change the basin for it, you'd better wait until the Qingming Festival and move it out of the house. You can choose the basin according to the size of the tree. If it's the first time to use the basin, you can use a basin with a diameter of 40 cm. The last time you change the basin, you can use a cylinder or a higher barrel. Generally every 2 years to its basin 1 time, if the tree is larger, you can only change once in three or four years, the shape of the basin every year to increase, and so it grows to more than two meters high, you just need to change the soil for it without changing the basin
If you want to change the basin, you need to water all around the basin the day before, which can help the soil in the basin to separate from the original basin, or you can dig out the soil around the edge of the basin, and take out the original basin soil together with brandy. Shovel out a circle of soil around it with iron catalpa, grasp it with one hand, pour the basin slowly, push the soil through the vent hole with one hand, remove some old or rotten roots, which can help it grow new branches, open more flowers, and then move it to a new basin..
When changing a basin for it, cover the drain hole at the bottom of the basin with tiles, and lay some coarse stones to help it drain and breathe. Then put culture soil on it. The soil only needs to cover its root neck. The surface soil should be 34 cm away from the basin mouth.
The soil should be loose and permeable. It's better to be sandy. It should be slightly acidic. If alkaline soil or water is used, it will not grow well or even die. It can be planted with a little bone powder, garden soil, rotten leaves, etc. Water it thoroughly, support it with abandoned pillars, prevent it from being blown down by the wind, and cover it with things
During this period, keep the soil wet, but do not water it too much, or it will rot. After changing the basin, water it for the first time, and then water it for the second time after it is dry. Usually, spray water on the leaves. If you buy brandy from other places, you should first prune it, and then immediately pot it. Do not remove the original soil on the root. Wait until it slows down, then let it receive the light