Rhododendron like loose fertile, weak acid, with better drainage and permeability of soil. Do not like heavy, alkaline soil. Therefore, we can mix rotten leaf soil, peat soil and sand soil in the proportion of five to two to three as the soil for its cultivation. Before planting or transplanting, a small amount of bone powder can be added to the soil to increase the mineral content of the soil.
The most suitable temperature for Rhododendron growth is 15-25 ℃, in spring or autumn, try to let it grow in this temperature range. In summer, when the temperature is relatively high, we should pay attention to temperature control. The maximum temperature should not exceed 32 ℃. When the temperature is relatively low in winter, we should move it to the house in time and keep the temperature above 5 ℃.
Watering Rhododendron is a technical work. If it is watered more, it will rot easily. If it is watered less, it will dry leaves. Generally speaking, we only need to keep the basin soil moist in early spring. At the end of spring and the beginning of summer, when it is ready to bloom, the water demand will greatly increase, so it needs to be watered a little more. In summer, the temperature is too high. In addition to watering, spray some water on the plants. In autumn, when the weather turns cold, it is necessary to control the water moderately and let the basin soil dry slightly. In winter, when it goes into dormancy, it will reduce watering.
1. Trim. Rhododendron grows very fast and easily grows very dense, which will lead to many internal branches and leaves can not see light and can not grow healthily. So we should trim it in time, not only to make it more beautiful, but also to make it more healthy.
2. Change the basin. The growth of Rhododendron needs to consume the nutrients in the soil. After a year or two of cultivation, the nutrients in the soil will be absorbed by it. At this time to give it a new nutrient rich soil, it can continue to grow healthily
