Schematic diagram of maintenance and watering<br> (2) Fertilization<br> ① Fertilization mainly includes base fertilizer and topdressing:<br> The base fertilizer is applied during the dormancy period of plants, and the fully decomposed organic fertilizer is preferable.<br> Top dressing can be compound organic fertilizer or chemical fertilizer. For flowering shrubs, a topdressing with phosphorus and potassium as the main fertilizer should be applied after flowering.
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