1、 Unsuitable soil

1. Reason: if the soil used is not suitable for the growth of Petunia, it is easy to cause its leaves to dry up. Specifically, slightly acidic soil is the most suitable for it. Alkaline soil may cause its leaves to fall off

2. Measures: in view of this situation, it is necessary to change the soil in time. It is best to use acidic soil, but neutral soil can also be used if it doesn't work

2、 Iron deficiency

1. Reason: iron plays a very important role in the growth of Petunia. The lack of iron used for watering will lead to dry leaves

2. Measures: iron should be supplemented in time. At this time, it is most appropriate to use some iron rich fertilizers, such as alum fertilizer water

3、 Humidity is too low

1. Reason: if Petunia is in a very dry place for a long time, it is easy to cause its leaves to dry up

2. Measures: the first task is to increase the humidity of the surrounding environment. Especially when the weather is dry, spraying water and spraying properly is a very essential task. p>

4、 The light is too strong

1. Reason: Petunia under strong light for a long time will also cause its leaves to dry and fall off

2. Action: move it to a cool place. Half shade place is more suitable for its growth. Especially in the strong light at noon, be sure to avoid it