1、 Fertilization method

From March to April, that is, after leaving the room and before the flower buds spit out color, in order to turn the old leaves green and promote the growth of new roots, thin alum fertilizer water can be applied every 10 days; From May to July, that is, after flowering, dilute alum fertilizer water every half a month; From August to mid October, alum fertilizer water containing potassium and scales shall be applied every 10 days during flower bud pregnancy; After wintering near the house, fertilization should be stopped

2、 Precautions

1. When fertilizing Rhododendron, we must pay attention to thin fertilizer and frequent application. We should fully decompose the fertilizer in use and do not splash the fertilizer liquid on the branches and leaves

2. Fertilization should be carried out when the weather is sunny and the basin soil is dry, preferably in the evening. At this time, the effect is the best and safest

3. In the morning of the second day after fertilization, water it once, and then use clean water, which is more conducive to the dissolution of fertilizer and better absorption of roots