Rhododendron ovale needs to be cultivated in suitable soil when it grows. Generally, it is the most appropriate to choose some acid soil for breeding. But in the north, the soil is very alkaline, so if you want to breed it, basin soil needs to be used for a certain preparation to use.
The root system of Rhododendron ovale is very thin first, so the requirements of fertilizer concentration and water quality are very strict. When applying fertilizer to it, be sure to apply it in an appropriate amount. In order to make its branches, leaves and buds grow better before spring flowering, we can apply phosphate fertilizer to it once a month. A mixture of nitrogen fertilizers that can be applied once or twice after flowering. Wait until September to October to apply one or two times of phosphate fertilizer. When growing and blooming, there are many requirements for fertilizer and water, but when it comes to winter and summer dormancy, there will be less requirements, so at this time, we must control and prevent rotten roots. In addition, the northern weather is relatively dry, usually should be timely watering or spray can be, so that can improve the humidity.
In order to make its plants bloom faster, we should pay attention to its pruning at ordinary times. Generally, it is through the method of picking the heart to promote the germination of its branches. For those flowers that are compact and affect the shape of the flower, they can be sparsely bud in advance, which can not only make its flowers more colorful, but also make it bloom and grow more smoothly in the next year. Its germinating ability is relatively strong, so sometimes appropriate pruning is also to maintain its beautiful appearance, so the ornamental and commercial will always be maintained.
Generally, flower bud differentiation is carried out in autumn. At this time, we need to control the flowering period artificially by means of refrigeration or increasing the temperature. If you want to make it bloom in advance, you can move it to a greenhouse for cultivation. The temperature is 20 to 25 degrees, and you should often spray water on the branches and leaves. If you want to delay, let it stay in a low temperature state. The temperature is 2 to 4 degrees. When the pot is dry, water it, move out in summer, and bloom in 2 weeks.
