1. Natural replacementCause: If the petals turn from white to black and there are no other problems with the other maintenance factors, this may be the end of its normal flowering period, after which it will naturally wither. This is a normal phenomenon. Measures: There is no need to worry about this situation. It is just a natural metabolic phenomenon. Simply cut off the flowers and flower stems with scissors to reduce nutrient consumption and promote flowering next year. 2. Improper pottingReason: It may be that when repotting, the roots were accidentally damaged, and the function of transporting water and nutrients was hindered, which also caused the flowers to turn black and lead to premature withering. Measures: When repotting, be sure to pay attention to the method and be sure not to damage the main root. If the roots are damaged, the plant can be removed, coated with rooting agent and replanted for maintenance. 3. Too much lightReason: Although white calla lilies need more exposure to sunlight during the flowering period, the sunlight is too strong and can cause the petals to be burned, causing the flowers to turn black. Measures: Just let it be exposed to scattered light normally. If it is accidentally burned, you need to put it in a semi-shaded place to adapt, and it will recover after a period of time. |
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