Why Does My Swiss Cheese Plant Have Yellow Leaves

Swiss cheese plant is a large indoor foliage plant. Its biggest feature is very shiny green leaves with unique lobes on the leaf surface. The leaves of indoor potted Swiss cheese plant will turn yellow. There are no more than those reasons. They are improper watering, dry air, inappropriate lighting, changes in temperature, failure to recover after transplanting, infection with diseases and pests, improper fertilization or natural aging of leaves.
There is also a special situation that needs to be explained to you. When we just bought the potted Swiss cheese plant to adapt to the new environment, several leaves at the bottom of the rhizome will turn yellow and wither, which is also normal, because adapting to the new environment must consume nutrients and water, which will cause the old leaves at the bottom of the rhizome of Swiss cheese plant to turn yellow, which is a normal phenomenon.

Why do Swiss cheese plant potted plants have yellow leaves?

1. Watering problem

Improper watering is the most common cause of yellow leaves in potted Swiss cheese plant. If your Swiss cheese plant has some yellow leaves, first check the dry and wet condition of the basin soil.
If the basin soil has not been watered for a long time, the soil looks dry and white, and the stems and leaves of Swiss cheese plant shrink and the leaves curl up, that is, excessive drought causes the leaves of Swiss cheese plant to turn yellow.

2. Excessive drying of air

Swiss cheese plant is a tropical foliage plant. It prefers high air humidity (50% ~ 75%). Swiss cheese plant can tolerate a slightly dry environment for a period of time. However, if the indoor environment is dry for a long time and the relative humidity is below 40%, the leaves will turn yellow and the ends of the leaves will turn brown.

3. The light is not suitable

Swiss cheese plant is a kind of foliage plant growing in the rain forest. It originally grows in the shade of trees. They prefer to scatter light. If the sun is exposed to strong light and high temperature, it is easy to burn the leaves. The tip of the leaves will first turn brown and slowly dry and turn yellow, and the color of those dry yellow leaves will be lighter.

4. Temperature change

Swiss cheese plant is a typical tropical foliage plant. Its most suitable growth temperature is between 18 ~ 27 degrees. If the temperature is lower than 10 degrees, it will start to stop growing. If the temperature is lower than 4 degrees, Swiss cheese plant may cause frostbite. If Swiss cheese plant potted plants are placed next to heating or air conditioning, their leaves will also turn yellow.

5. Swiss cheese plant did not recover after transplanting

This situation occurs after Swiss cheese plant repotting. If the roots of Swiss cheese plant are accidentally damaged when changing pots, and appropriate environment is not given after transplanting, the leaves will turn yellow.

6. Infectious diseases and insect pests

If there are some erythema on the leaf surface of Swiss cheese plant or the leaf turns yellow as a whole, it may be caused by infection with diseases and pests. If pests are found, such as red spider, it is caused by excessive drying, poor ventilation and high temperature.

7. Improper fertilization

Swiss cheese plant has little demand for fertilizer. Generally, it only needs to supplement it every 3 ~ 4 weeks in spring and summer to give general-purpose water-soluble leaf fertilizer. Moreover, when applying fertilizer to indoor potted Swiss cheese plant, we only need to give half the usual concentration, and there can be no fertilizer left on the leaf surface, Otherwise, it will also lead to fat injury and yellow leaves.

How to deal with Swiss Cheese Plant Yellow Leaves?

1. Adjust the watering frequency

The solution at this time is that we can water Swiss cheese plant once in time during caring for Swiss Cheese Plant. In addition, we should pay attention to cleaning the leaf surface and spraying some fog water on the leaves, so that Swiss cheese plant can recover to a healthy state as soon as possible.
Another situation is the excessive watering of Swiss cheese plant or the poor drainage of basin soil, which leads to the constant moisture in the soil. It is also possible that there is ponding in the supporting basin at the bottom of the flowerpot and it is not poured out in time, which will also lead to the constant moisture and ponding in the soil.
If the soil is too wet, the yellow leaves of Swiss cheese plant will turn yellow at the bottom of the rhizome. The yellow leaves of Swiss cheese plant look like they have been soaked in water, and the edges of the leaves will turn yellow or brown, which will eventually lead to the black and withered leaves, and the rhizome will rot in severe cases.
Once there is too much water, we should remove the yellow leaves of Swiss cheese plant in time, dry the basin soil in time, and check whether the root system is rotten.
When the weather is cold in winter, Swiss cheese plant will slow down or even stop growing. Watering must be controlled at this time; In summer, when the temperature is high and the ventilation is good, the watering frequency should be increased to avoid long-term soil drought.
Read More:
How to Care for Swiss Cheese Plant

2. Increase environmental humidity

At this time, some serious swiss cheese plant yellow leaves can be cut off, just increasing the ambient humidity, and occasionally spraying water around them regularly to clean the leaves. You can put some pebbles on the tray, then fill it with appropriate water, and place the potted plants on the pebbles, which can also continuously increase the environmental humidity.

3. Adjust the position of Swiss cheese plant

In case of sunburn all the time, it is necessary to move the potted Swiss cheese plant to a slightly shaded place in time, and cut off the yellow leaves of Swiss cheese plant in time to restore its green state. However, if Swiss cheese plant potted plants are placed in a dark environment, excessive shading will also lead to yellowing and falling off of leaves, slow growth and dim leaf color. At this time, it is necessary to slightly increase the light and move to a place with bright light, but avoid moving to a place with more sunlight at once, otherwise the stems and leaves will be sunburned.

4. Adjust the temperature

Where there is floor heating, we should avoid placing the potted Swiss cheese plant on the floor heating, otherwise it will also lead to the generation of yellow leaves of Swiss cheese plant. We can place it in a ventilated and transparent place with the temperature maintained above 10 degrees.

5. Pay attention to the basin changing time of Swiss cheese plant

When we see that the root of Swiss cheese plant has grown the excavated surface or the drainage hole at the bottom of the basin, we should change the basin in time. Generally, we should change the basin after warm spring to avoid changing the basin when it is hot in summer and cold in winter.
After changing the basin, it should be placed in a ventilated and transparent place in time to keep the light bright and do not bask in too much sunlight. In addition, if it is found that the yellow leaves of Swiss cheese plant should be cut off in time. Do not apply fertilizer in the first two months after transplanting, and maintain a certain air humidity. When the soil is dry 3 ~ 5cm below the surface, water it again.

6. Prevention of diseases and insect pests in Swiss cheese plant

At this time, we must cut off the leaves that are seriously infected with insects in time, and spray some soapy water in time. In serious cases, we can spray jinmanzhi, abamectin or damilin.
If it is infected with aphids, wash it with a large amount of water in time, and spray some soapy water. For example, use one or two milliliters of soapy water, mix it with about one liter of water, stir it evenly, and then spray it on the leaf surface, leaf back and rhizome.
Swiss cheese plant is occasionally infected with fungal diseases, such as powdery mildew. White powder will appear on the leaf surface, which is usually caused by the humid environment and poor ventilation. Chlorothalonil or methyltobuzin solution shall be sprayed in time to remove it.
If some brown or yellow spots appear on the leaves of Swiss cheese plant and gradually become plaques, it is infected with leaf spot disease. It is necessary to spray zineb or chlorothalonil solution in time.

7. Adjust fertilization frequency to reduce Swiss cheese plant yellow leaves

If we accidentally fertilize too much, we can wash tfhe basin soil with a large amount of water. If it has been a period of time, we should change the basin in time, clean up the original old soil, transplant again, and put it in a ventilated and shaded place to ease.
If the leaf veins of Swiss cheese plant are still green, but the leaf surface is yellow as a whole, it is due to the excessive deposition of saline and alkaline substances in the soil. This situation will be caused by replenishing water to Swiss cheese plant with tap water for a long time. It is necessary to wash the basin soil with a large amount of clean water and replenish it with some organic fertilizer and water.