The reason why the leaves of Dieffenbachia turn yellow

If you grow evergreens at home, you may encounter the problem of yellowing leaves. Don’t panic at this time. First find out the reason, and then take appropriate measures to solve the problem of yellowing leaves of the evergreen!

Long-term weight loss

The evergreen has not been fertilized with nitrogen fertilizer or repotted or watered for a long time, resulting in a lack of nutrients such as nitrogen in the water, causing the branches and leaves to be weak and the leaves to be thin and yellow. If the evergreen is grown in water, new culture water must be replaced in time and thin, decomposed liquid fertilizer or compound flower fertilizer must be gradually added.

Overfertilization

If too much fertilizer is applied, the new leaves of the evergreen will become thick and uneven, and the tips of the old leaves will become dry, brown and fall off. You should stop fertilizing immediately, increase the amount of water change to allow the fertilizer to be lost, or immediately turn the pot over, rinse the root bulbs with water and then replant them in the pot.

Hot and hot

If flowers are placed in a high temperature place and exposed to direct strong sunlight, it is very easy to cause the tips and edges of young leaves to burn, or the leaves to turn yellow and fall off. It needs to be moved to a well-ventilated, cool place in time.

Excessive shade

If flowers are placed in the shade or in a place with insufficient light for a long time, the branches and leaves will turn yellow.

Alkaline soil and water

Due to the lack of soluble iron and other elements in the water that can be absorbed by it, the leaves of the evergreen will gradually turn yellow. When planting, choose acidic soil and water, and water with alum fertilizer frequently during the growth period.

Airtight

If too much nitrogen fertilizer is applied, the branches and leaves of the evergreen plant will grow too lush, and if they are not pruned for a long time, the inner branches and leaves will not receive enough light, which can easily cause the leaves to turn yellow and fall off. Reasonable fertilizer application and increased pruning should be carried out to ensure ventilation and light transmission.

Air Drying

When the indoor air is too dry, the tips of flowers and plants often dry out or their edges burn. It is important to increase the air humidity by spraying water, covering with plastic film, etc. to prevent the leaves from turning yellow.

Improper temperature

The room temperature is too low in winter, and the flowers suffer from cold damage, causing the leaves to turn yellow, and in severe cases, they may wither and die. If the room temperature is too high, the plant will transpire too much, and the roots will not be able to meet the demand for water and nutrients, which will also cause the leaves to turn yellow. Please pay attention to adjust the room temperature in time.

Pests and diseases

Leaf spot disease caused by fungi and other pathogens can easily cause local necrosis of leaves and the appearance of yellow spots or plaques. In severe cases, the entire leaf will turn yellow and fall off. After being infected by the mosaic virus, yellow and green spots will appear on the leaves; the leaves are also harmed by scale insects, red spiders, etc.

Strong sexual stimulation

Using too high a concentration of pesticides when preventing and controlling pests and diseases, or being polluted by toxic gases in the atmosphere, or suddenly watering with cold water when the temperature is high, can easily cause the leaf tips or parts of the leaf surface to turn yellow and wither, or even cause the entire plant to die. Therefore, we should pay attention to the rational use of pesticides and try to eliminate the sources of air pollution. Avoid watering flowers with cold water around noon in midsummer.

The yellowing of the leaves of the evergreen is sometimes caused by one reason, but most of the time it is caused by multiple factors. Therefore, a correct diagnosis should be made so that the right medicine can be prescribed.