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How to cultivate oleander?
The maintenance of oleander should be done as follows: (1) Suitable temperature: oleander should be planted in the leeward and sunny places in the north, and it should be protected against freezing indoors in winter, and then removed for planting in the late April of the following year. If the outdoor temperature is high in winter, you can cultivate the soil to keep out the cold. (2) Pot changing: Potted oleander should be changed every 1-2 years, and the pot should be changed in spring to minimize root damage. (3) Watering: In summer, oleander grows vigorously, with large flowers and needs a lot of water. Drought and water shortage should be avoided at this time. In order to avoid the wilting of shoots and affect flowering, potted oleander is watered once in the morning and once in the evening, and ground oleander is watered once every 65,438+05 days. Master the principle of seeing dry and wet in spring and autumn. Reduce watering in winter. After September, the water of oleander planted on the ground should be preserved to prevent the plants from growing, make the branches mature and increase the accumulation of nutrients, so as to facilitate safe overwintering. (4) Fertilization: When changing pots of oleander in spring, sufficient base fertilizer should be applied, and fertilization should be applied once a month during the growing period. Topdressing phosphorus and potassium fertilizer at flowering stage. Base fertilizer should be applied to oleander planted on the ground at the end of autumn to fully develop branches, which is conducive to overwintering and healthy growth in the coming year. (5) Pruning: Pruning in spring, removing overgrown branches, twigs, pests and diseases, and loosening the branches with dense cavities, so that the branches are evenly distributed and the tree shape is full. In addition, the whole plant of oleander is very toxic, which is dangerous for people and animals to eat by mistake, so it should be avoided to plant near wells and drinking pools.