The reason why the leaves of crabapple turn yellow and fall off

1. Unsuitable soil

Reason: Begonia likes acidic soil. If it is watered for a long time, the soil will become alkaline and easy to become compacted. It will be difficult for the roots to adapt to such soil, which will affect the absorption function and make it unable to absorb water and nutrients normally. The leaves will also turn yellow and fall off.

Solution: Replace the unsuitable soil and prepare new acidic soil. Or add acidic substances and loosen the soil appropriately to keep it loose.

2. Improper watering

Reason: Insufficient or excessive watering will cause the leaves of the crabapple to turn yellow and burnt. If it is not watered for a long time, the soil will be very dry and unable to absorb water. If you water too much, water accumulation will be serious, the roots will rot, and the leaves will turn yellow and fall off.

Solution: Apply water correctly to ensure that water can be supplied for growth, but do not give too much water. If too much water is applied, promote water discharge.

3. Improper fertilization

Reason: Sufficient nutrients are needed for growth. Too much fertilizer will cause fertilizer damage and the leaves will turn yellow and dry. If you don't apply fertilizer, the plant will lack nutrients and the leaves will turn yellow.

Solution: Pay attention to the frequency of fertilization. If there is insufficient nutrition, appropriate fertilizer should be applied. If too much fertilizer is applied, water should be used to dilute it.

4. Improper lighting

Reason: Light is also one of the reasons. Long-term lack of sunlight will cause the plant to grow poorly, causing the leaves to turn yellow and fall off. This can also happen when strong light causes burns.

Solution: Provide appropriate light, expose it to more sunlight when it is growing vigorously, and pay attention to blocking light in summer.