The lantern with the name of "hanging the Golden Bell upside down". How do the leaves of crabapple flowers turn yellow?

The lantern crabapple is a kind of flower that looks like an upside down lantern. It has a long flowering period and a very beautiful color. When the breeze blows, the flowers dance with the wind, just like a jumping fairy. Potted lantern crabapple is a good choice to decorate the interior, which is very festive. However, it is not recommended for beginners to choose it to practice, because improper care can easily lead to yellowing of leaves, what on earth is going on?

First, the reason why the leaves of Malus chinensis turn yellow.

1. Caused by improper fertilization

When fertilizing too much, especially too much nitrogen fertilizer, the leaves of Malus chinensis will show uneven, the new leaves will be thick, yellowing and falling off from the old leaves, and slowly the whole leaves will turn yellow.

When fertilizing too little, if nitrogen fertilizer or other nutrients, the new leaves become lighter and yellowing, and the whole plant grows weak, small and slow.

2. Caused by improper lighting

Lantern crabapple can grow well as long as it is in semi-overcast conditions. if it is exposed to strong light for a long time, the new young leaves will easily be yellow and scorched. If there is no light in a cool environment for a long time, the leaves of the whole plant will wilt, turn yellow, and even fail to blossom.

3. Caused by improper watering

If the watering is too little, the lantern crabapple will be in a state of lack of water for a long time, and the leaves will turn yellow if the leaves are short of water. Especially in the hot summer, it is easy to appear the state of water shortage, because the leaf water evaporates quickly.

If too much water is watered, the water in the basin soil will affect the respiration of the roots. In the long run, the roots will rot, the leaves of the whole plant will not be able to absorb water and nutrients, and the color will slowly become lighter, then turn yellow, fall, and the serious whole plant will die.

4. Caused by diseases and insect pests

If the lantern crabapple encounters the attack of diseases, such as the common leaf spot, it will make the leaves yellowing.

5. Caused by environmental change

The lantern crabapple bought from the market will turn yellow within a few days after returning home, which is due to the change of environment. Because the temperature, humidity and light conditions are different from place to place.

6. Caused by lack of ventilation

If you keep the lantern crabapple in an unventilated room for a long time, it won't be long before the leaves of the whole plant turn yellow.

2. prevention and control of yellowing of Malus chinensis leaves.

1. Prevention and control measures for the yellowing of Malus chinensis leaves caused by improper fertilization: if the leaves are yellowed due to excessive fertilization, you should not continue to apply fertilizer, but increase the corresponding amount of water to let the excess fertilizer flow out from the bottom of the basin. Then change the soil and plant it again, and it will come back to life after waiting for a few days. If there is too little fertilization, the basin soil will be changed again. If an appropriate amount of base fertilizer is added to the soil, the drainage and air permeability must be good. Then put the whole plant in a cool place, do not bask in the sun, slowly recover and then maintain normally.

2. Prevention and treatment of yellowing of begonia leaves caused by improper lighting: proper shading in summer, maintenance in astigmatism in spring and autumn, pay more attention to observation at ordinary times, and adjust the maintenance environment in time.

3. Prevention and control measures for the yellowing of begonia leaves caused by improper watering: if you water too little, immediately move it to a cool place, spray water around the leaves, and wait for it to gradually restore its state, and then slowly increase the amount of water. If you water too much, you should reduce the frequency of watering and loosen the soil in time. Watering should be carried out according to the specific wettability of basin soil or leaf conditions, and do not water blindly.

4. Prevention and control measures for improper diseases and insect pests causing yellowing of Malus chinensis leaves: timely treatment of diseases and insect pests, pull out diseased plants, so as not to infect other healthy plants. At ordinary times, we should pay attention to the cleanliness of the whole plant to prevent pests.

5. Prevention and treatment of yellowing of begonia leaves caused by environmental changes: there is no need to worry too much, it can be restored after normal maintenance for a week.

6. Prevention and treatment of yellowing of begonia leaves caused by poor ventilation: put it in a ventilated, semi-shady place, water it at the right time, and wait for it to recover slowly.

The above is the introduction of the reasons for the yellowing of the leaves of crabapple flowers and the methods of prevention and cure. Check the reasons quickly to find out whether you have made the same mistake.