Reasons and Solutions for Yellowing Leaves on Banana Shrub (Michelia figo)

Banana shrub (Michelia figo) is a traditional famous flower in China, with a long history of cultivation in the country. Because of its delicate and beautiful appearance, it has extremely high ornamental value, and it is also relatively strong in other respects, with high medicinal value. However, during pot cultivation, the phenomenon of yellowing leaves occurs. What causes this? Let's find out together.

1. Unsuitable soil

If the leaves of banana shrub suddenly turn yellow, it may be caused by unsuitable soil. Unsuitable soil prevents the roots of banana shrub from growing normally, root absorption is blocked, and the leaves turn yellow due to lack of nutrients and water. It is recommended to replace the soil with new soil in time, or use ferrous sulfate to improve the acidity of the soil, and loosen the soil appropriately to restore more vitality.

2. Overwatering

Banana shrub has strong drought tolerance and usually does not need to be watered frequently. If watered too much, the roots soak in accumulated water, the roots suffocate and rot, causing the leaves to turn yellow. Therefore, the amount of watering must be controlled, and it is not suitable to water too much at one time, especially during the winter dormant period, the amount of watering for banana shrub must be well controlled. Also cut off the rotted roots and prepare new soil for it.

3. Excessive fertilisation

Banana shrub does not have a high demand for nutrients. If a large amount of fertiliser is applied during cultivation, it will also cause its leaves to turn yellow, and in severe cases cause the roots to rot and turn black, and the plant to die. Therefore, during cultivation, fertilisation must be controlled. Apart from applying fertiliser appropriately during vigorous growth, there is no need to fertilise at other times. If fertiliser is applied excessively, pour a large amount of water into the soil in time to dilute the fertiliser concentration, or change the pot and soil and replant.

4. Seasonal temperature difference

In the environment of large temperature differences in autumn and winter, the leaves of banana shrub are also very prone to turning yellow, and it may even cause the banana shrub to die. Usually, during the day it should be placed in a ventilated environment with sufficient light for cultivation, while at night the temperature should be controlled for maintenance, keeping the temperature above 10 degrees to minimise the impact of temperature differences on it.

  The above is an introduction to what causes yellowing leaves on banana shrub. I hope it can help you. To learn more related knowledge, please follow us.