Oleander like warm and humid climate, slightly cold resistant, in warm areas can overwinter in the open. Family potted plants in Beijing area can bundle up branches and put them in bags to live through the winter in the leeward and sunny place, otherwise it is easy to freeze. The smaller plants should be moved into the room for maintenance before frost, and then moved to the outside for routine management in April of the next year. Under the microclimate conditions south of the Yangtze River, it can overwinter in the open.
Oleander like a sunny environment, but also a little shade. In the process of cultivation and maintenance, it should be ensured that the light time is not less than six hours per day. In the process of family maintenance, it should be placed on the windowsill or balcony and other places with direct sunlight.
Proper watering is the key to good management of oleander. Improper watering in winter and summer may cause falling leaves, flowers and even death. Water once a day in spring and once a day in the morning and evening in summer to keep the water content of basin soil around 50%. Spray water frequently on the leaves. Too dry, easy to fall leaves, wilt. In winter, it can be watered less, but the water content of basin soil should be kept about 40%. Clean water is often used to wash dust on the leaves.
It is necessary to keep about 20% of the basin soil organic soil fertilizer. If used in chicken manure, 15% is enough. Fertilization time: one time before Qingming and one time after autumnal equinox.
Methods: Ring ditch was dug at the edge of basin, fertilizer was applied and then covered with soil. After fertilization in Qingming Dynasty, the water for bean cake made by adding water is applied every ten days or so; after fertilization in autumn equinox, the water for bean cake or peanut cake or ten times of chicken manure is applied every ten days or so. Without the above fertilizer, you can add five to seven times more water to the urine of the person who has been rotten for more than seven days, pour it along the edge of the basin, and then pour it through water. The principle of fertilizer with more nitrogen is to be thin, light, less and diligent, and strictly prevent the root from burning.
