1, optically controlled temperature. Potted pomegranates like the light, and they should bask in the sun all day in winter. In terms of temperature, the most suitable temperature for potted pomegranate trees is about 8℃, neither lower than zero nor higher than 20℃.

2. Control water and fertilizer. Fertilize once before winter, and you can choose organic fertilizer or phosphorus and potassium fertilizer. After fertilization, water should be frozen. Pay attention to pouring frozen water when the soil is not frozen. The water should be poured thoroughly, but there should be no water in the basin.

Cultivate the soil to prevent the cold. Do a good job in cold protection. The root neck of potted pomegranate is easy to be frostbitten in winter, so a layer of soil should be buried in its root neck. The soil layer should cover the root neck of pomegranate tree and make it into the shape of a big bottom and a small top. The soil used for soil cultivation should be loose and breathable.

4, plastic trimming. In winter, potted pomegranate trees need pruning. When pruning big branches, the spacing between big branches should be kept at about 90 cm, and when pruning small branches, the spacing between small branches should be kept at about 35 cm. When pruning, the branches should not overlap, and a layer of calluses should be coated after pruning.

5. Control pests and diseases. Attention should also be paid to the prevention and control of pests and diseases in winter. When potted pomegranate trees suffer from diseases, 150 times Bordeaux solution or 0. 14% carbendazim solution should be sprayed once a week or so. At onset, 20% phoxim 1000 times solution or 50% mirex EC 1000 times solution can be sprayed every 8 days.