1. Insufficient nutrients1. Reason: Lilac has a higher demand for nutrients during its vigorous growing season. If sufficient fertilizer is not added at this time, the leaves will dry up and fall off. 2. Measures: In this case, timely replenishment of fertilizer is very necessary. During normal maintenance, pay attention to the frequency of fertilization. Generally speaking, it should be done once a week during the growing season; when the growth is slower, it can be done less frequently, about once a month. 2. Too little watering1. Reason: Cloves require a lot of water during their growth period. Insufficient watering or lack of water for a long time will cause the leaves to dry up and fall off. 2. Measures: If it is caused by too little watering, it is relatively easy to alleviate. If you add enough water immediately, the plant may return to normal soon, but be careful not to allow water to accumulate. 3. Diseases1. Reason: There are some diseases that can also affect the health of lilac leaves, causing them to dry up, such as anthracnose. And once it happens, the symptoms will be more severe. 2. Measures: The first task is to trim off all the dead leaves, and then spray pesticides, such as thiophanate-methyl and carbendazim. |
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