After winter, the temperature will gradually drop, and the cuckoo will grow very slowly or temporarily stop growing in the low temperature environment.Therefore, the demand for fertilizer is not high at this time, so as long as it is not particularly short of fertilizer, it is not necessary to fertilize it in winter.But before the winter, just give it a fertilizer on the line.If you still fertilize in winter, the leaves will easily wither or turn yellow, so you can't fertilize it.
If there is a phenomenon of falling leaves, it is necessary to temporarily stop fertilizing.Then pour more water into the soil, the fertilizer in the soil will be discharged with the water, and then put it in the place where the air is circulating.If the fertilizer can not be discharged, the plants should be taken out and the original soil replaced.If the root system is rotten, it should be pruned properly, but it should be disinfected before potting.
When fertilizing rhododendrons, thin fertilizer should be used. Fertilizer with too high concentration should not be applied, and too much fertilizer should not be applied, and the number of times of fertilization should not be too frequent. Generally, fertilizer should be applied once every 10 days or so in the growing season.