1. In normal times, due to careless maintenance, yellow leaves and diseased branches and leaves may often appear. When found, they need to be removed in time to prevent infection of other branches and leaves, reduce the daily consumption of nutrients, and maintain the beauty. If there is only a dry and charred place on the edge, you can cut it off with scissors.
2. If all maintenance factors are appropriate, its growth speed will become faster, the indoor space will be more limited, and the plant shape cannot be too high. Therefore, when pruning, short cutting is the most important thing. Remove the excessive branches and make the whole plant dwarf. When removing, leave 3 to 4 bud holes at the bottom, or about 10 cm, and cut the rest.
3. Some weak branches should also be cut off from the base, because their germination ability is very weak, and they will compete with other strong branches for nutrients.
It's perfectly possible to do this in autumn, and it doesn't have much effect on the plants. But it's better to choose March to April in spring, during which the germination speed is faster, the new branches grow faster, and can recover quickly after cutting.
