Water should be done when the surface of potted soil is dry, and no waterlogging is allowed. Of course, there are few waterlogging phenomena in bonsai, and most of them are dry, which is different from other potted plants.
Holly likes warm, humid and sunny environment, and is tolerant of semi-shade. During the growth period, keep the basin soil moist without water accumulation, and pay attention to spraying water on the plants when the air is dry to make the leaves moist; Apply alum fertilizer every 15-20 days to provide sufficient nutrients, make the leaves dark green and bright, and make the plants full of vitality. Because of its strong germination, it is necessary to start and pick up the heart in time, erase the extra buds and keep the beauty of the tree. If it is required to be cool in winter, it can be moved to a cold room for wintering, and the pot soil should be kept above 0℃. The area south of the Yellow River can also overwinter in outdoor sunshine. Before overwintering, water should be poured once to replenish water in time to avoid over-drying and freezing, but water should also be prevented from accumulating in the soil, otherwise it will cause rotten roots. Turn the pot every 2-3 years in spring, and the pot soil should be rich in humus, loose and breathable.