The fertilization of potted rhododendron in potted rhododendrons should use dilute cake fertilizer and adding 0.2% of ferrous sulfate. The buds can also be sprayed with 0.3% potassium dihydrogen phosphate during the growth period and poured once every half month. Note that fertilization should be carried out in the vegetative growth period and flower bud differentiation period, and fertilization should be stopped in summer, winter, and flowering periods. Camellia Camellia hi fertilizer, the general choice of nitrogen fertilizer soybean cake, rapeseed cake, etc., phosphate fertilizer used superphosphate, potassium dihydrogen phosphate and so on. Spring fertilizer is dominated by nitrogen fertilizer, and flower buds are dominated by phosphate fertilizers. All kinds of fertilizers should be used after decomposing, such as with decomposed cake fertilizer, water and fertilizer ratio of 8:2 is better.
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