What is the reason why the leaves of Osmanthus fragrans turn yellow and fall off?

It is a common phenomenon that the leaves of Osmanthus fragrans turn yellow and fall off, which is usually closely related to its growing environment and maintenance methods. When faced with the yellowing of Osmanthus fragrans leaves , immediate action should be taken to find out the root cause of the problem and take appropriate solutions.

1. Yellow leaves caused by too wet soil

Osmanthus fragrans grows best in slightly moist soil. Frequent watering causes the soil to remain moist for a long time, which may cause root rot and affect the plant's absorption of water and nutrients, leading to yellowing of leaves.

If this happens, immediate measures should be taken: turn the pot over to check the roots, cut off the rotten parts, and disinfect with 0.2% potassium permanganate solution. After the roots are dry, repot with fresh culture soil and water appropriately after 1 to 2 days. At the same time, ensure that the maintenance environment is semi-shaded and ventilated.

2. Yellow leaves caused by improper fertilization

Proper fertilization is essential for plant growth. Excessive or too concentrated fertilization will damage the root system, affect nutrient absorption, and cause yellowing of leaves. Fertilization should follow the principle of "small amounts of fertilizer and frequent application", especially high-concentration fertilizers such as urea, which should be applied in small amounts and diluted with water in time after fertilization.

If fertilizer damage is caused by improper fertilization, dilute the fertilizer concentration by watering abundantly and move the plant to a cool and ventilated place to avoid direct sunlight. In serious cases, it is necessary to repot and trim the rotten roots, disinfect with fungicides, repot with moist river sand, and then change back to fertile soil after new roots sprout.

3. Yellow leaves caused by insufficient light

Osmanthus fragrans likes light. Insufficient light will affect photosynthesis, causing the plant to grow weak and the leaves to turn yellow. The sweet olive should be placed in an environment with sufficient light, with appropriate shade in the summer, more sun in the spring and autumn, and placed in a sunny room in the winter. If the leaves turn yellow, you can appropriately prune the dead branches and yellow leaves, and thin out the overgrown branches to reduce nutrient consumption and promote recovery.

4. Yellow leaves caused by low temperature

The temperature drops in autumn and winter, and the low temperatures at night can easily cause the leaves of the Osmanthus fragrans to turn yellow. Insulation measures should be taken in advance, dead branches and yellow leaves should be pruned, nutrients should be supplemented, and cold resistance should be enhanced. Move the plants to a warm room before winter. If placed outdoors, cover them with plastic before the temperature drops, and ventilate them at noon to avoid yellow leaves caused by low temperature.

5. Measures to prevent the leaves of Murraya paniculata from turning yellow

Reasonable watering: Adjust the frequency of watering according to the season, keep the soil slightly moist in spring and autumn, increase the amount appropriately in summer, and control watering in winter to prevent the soil from being too wet.

Apply thin fertilizers frequently: Apply decomposed organic fertilizer water during the growth period to avoid direct contact between fertilizer and water and leaves. Water promptly after fertilizing to dilute and prevent root burn.

Keep ventilated: Place potted plants in an environment with good lighting and air circulation to reduce the occurrence of pests and diseases and promote healthy growth.

To sum up, combining the growth habits of Osmanthus fragrans and reasonably adjusting the maintenance methods can effectively prevent and reduce the yellowing phenomenon and keep the plants healthy and lush.