In order to make tea plums blossom more and have bright colors, the following measures should be taken in maintenance: ① In the northern region, humus soil or peat soil is the main culture soil, and a small amount of river sand is added. Loose soil, good drainage performance, strong permeability, fertility and acidity, suitable for root system development. Alkaline soil or clay cannot be used. ② It should be cultivated in the shade from May to September every year. If the sun shines directly, it is easy to burn the leaves and buds, causing the leaves to curl, and in severe cases, the burnt leaves will fall off. You need to see more sunshine in late autumn and winter. The optimum growth temperature is 65438 08 ~ 25℃. When the temperature exceeds 35℃, young leaves are easy to get sunburned. Strong cold resistance, can be placed in a cold room above 2℃ in winter. (3) During the growing season, the basin soil should be kept moist and free of water. If the water is insufficient, plants will not grow well, which will easily lead to falling flowers and buds. Its roots are fleshy, and if the basin soil is too wet for a long time, it will cause rotten roots. In hot summer, water is usually poured once in the morning and evening. In winter, the room temperature is low, so watering should be strictly controlled and it is advisable to keep the soil dry. Tea plum likes humid air, and the relative humidity should be kept at about 80%. In summer and dry season, it is necessary to wash the branches and leaves with clear water frequently (water spraying should be stopped when flowering) to improve the air humidity and keep the leaves clean. ④ Fertilization should be light, especially for 1 ~ 2-year-old seedlings whose roots are tender and weak. More attention should be paid to applying thin fertilizer to avoid fertilizer damage. Adult plants can apply 1 ~ 2 times dilute liquid fertilizer in March-April, mainly nitrogen fertilizer, to promote the growth of branches and leaves. Apply 1 ~ 2 times liquid fertilizer mainly containing phosphate fertilizer in May and June to promote flower bud differentiation. From September to 65438+1October, 0.5% calcium superphosphate solution was applied twice to promote the flowers to be large and colorful. In order to maintain the acidity of the basin soil, alum fertilizer water can be alternately applied for 2 ~ 3 times or a few drops of edible rice vinegar can be added when watering. ⑤ Sparse buds in time, cut off residual flowers and reduce nutrient consumption. Generally, each branch leaves 1 bud, and the rest are thinned out. Cutting off the residual flowers in time is beneficial to the sprouting of new branches. ⑥ Change pots every 2 ~ 3 years after flowering, and add new culture soil when changing pots. At the same time, it should be trimmed properly to make it ventilated and transparent.