What's wrong with the yellow leaves of hibiscus? What should I do if the leaves of the newly planted hibiscus keep turning yellow?

Hibiscus is very common in the south. Although it is not as gorgeous as peony, it is deeply loved by flower growers for its unique beauty. So what is the matter with the yellow leaves of hibiscus? What should I do if the leaves of the newly grown hibiscus keep turning yellow? The following editor will explain them one by one, hoping to help you.

Why are the leaves of hibiscus turning yellow?

1. Soil: Hibiscus prefers a warm, humid, sunny environment and grows in slightly acidic soil. If the soil is alkaline, the plant will shrink and the newly grown leaves will easily turn yellow.

2. Sunlight: Hibiscus likes a warm and sunny environment. It cannot tolerate shade. If it is kept in the shade for a long time, the plant will grow poorly and the newly grown leaves or other leaves will turn yellow.

3. Watering: Hibiscus likes the soil to be moist but not waterlogged. It is not drought-tolerant. If the soil is too wet or too dry, the leaves of the plant will be unhealthy and turn yellow.

4. Fertilization: If hibiscus is fertilized too densely during the long term, it will be detrimental to the root system, and the new leaves will turn yellow or no new leaves will grow.

5. Temperature: If the temperature is below 5 degrees in winter, the leaves of hibiscus will turn yellow and fall off. It will grow and bloom normally at 12-15 degrees (in the south). In the north, potted plants can survive the winter if the room temperature is kept at no less than 10 degrees. They will be damaged by frost if the temperature is below 0 degrees.

6. Pruning: Hibiscus is resistant to pruning and has strong branching ability. If it is not airtight, the new leaves will turn yellow.

How to deal with the yellowing of the newly grown leaves of hibiscus

1. For yellowing caused by the soil, it is recommended that you add 1:1000 vinegar when watering the hibiscus, which can slowly improve the acidity of the soil.

2. If the yellowing is caused by lack of sunlight, it is recommended to place the plant in a sunny location so that the plant can photosynthesize and grow vigorously.

3. For yellowing caused by watering, it is recommended to keep the soil moist during the growing period, water in the morning and evening during the hot summer, reduce watering after autumn, and water in moderation in winter. The soil should not be too wet or too dry during the flowering period, otherwise the flowers will fall.

4. For yellowing caused by fertilizers, it is recommended to apply nitrogen, phosphorus and potassium fertilizers once a month during the growing season to promote vigorous growth. During the flowering period, apply 1:1000 phosphorus and potassium fertilizers to promote more and more beautiful flowers. Do not apply nitrogen fertilizer.

How to prune hibiscus to make it grow better

If your hibiscus is still in the seedling stage, the pruning during this period is mainly topping and pinching. When it grows to the height you want, you can pinch and top it. I usually wait until it grows to about 15CM.

If it is in the growth stage, that is, the plant is slightly larger, it is enough to basically maintain the shape. For old, weak, sick and thin branches, they should be cut off. Don't be lenient, leaving them will consume their nutrients. And those extra branches, that is, branches that are unnecessary for the plant, can all be removed. There is no use in keeping them, but they will compete with the main trunk for nutrients.

Pruning in the later stage of flowering mainly involves pruning dead branches, leaves and flowers. The redundant branches that affect ventilation can be removed at the same time. The side buds growing inward can be completely cut off, and only the side buds growing outward are retained, so that they will not grow too densely and lack nutrition and ventilation in the future.