What is the reason why the leaves of sweet-scented osmanthus turn yellow? What are the solutions?

No matter which city, sweet-scented osmanthus is an important label of autumn characteristics. At this time, the wind helps the cinnamon light tree shadow sparse, the dark fragrance surges. There are some flower friends, sweet-scented osmanthus potted at home, not only can decorate the environment, but also can always smell the fragrance of sweet-scented osmanthus. But in the specific breeding process, sweet-scented osmanthus leaves often appear yellowing phenomenon, what is the reason? What are the solutions?

What is the reason for the yellowing of sweet-scented osmanthus leaves?

1. Too much watering leads to yellowing of sweet-scented osmanthus leaves (water yellow)

In case of waterlogging damage, the root system blackened and rotted, the leaf tip first scorched, and then the whole leaf withered and yellow fell off, resulting in the death of the whole plant.

2. Rotten roots lead to yellowing of sweet-scented osmanthus leaves.

The damaged part of the rotten root of sweet-scented osmanthus was waterlogged, and the disease spot gradually expanded, resulting in plant growth weakness and even death. This sweet-scented osmanthus disease often occurs in the rainy season in summer and autumn because the soil is too wet, resulting in the weakening of root resistance and the entry of germs.

3. Long-term lack of water leads to yellowing of sweet-scented osmanthus leaves (dry yellow)

Too little watering, or long-term half-cut-off or missed watering, so that the water evaporation of the leaves is greater than the absorption, resulting in water supply falling short of demand, but also causing leaves to yellowing. The "dry yellow" gradually yellowed upward from the lower leaves, withered and scorched off, and when the petiole was serious, the petiole drooped and wilted.

4. the leaves of sweet-scented osmanthus trees are yellowed due to long-term lack of fertilizer.

Insufficient fertilization, especially long-term non-application of nitrogen fertilizer or no change of soil, lack of nitrogen nutrition in the soil, resulting in thin leaves, thin and yellow leaves.

5. The leaves of sweet-scented osmanthus trees were yellowed by exposure to the sun.

Curing in the place of strong light in summer can easily cause tender leaf buds or leaf edge scorched or the whole leaf yellowing.

6. excessive fertilization of sweet-scented osmanthus trees leads to yellowing of leaves (fat yellow)

Excessive fertilization, especially too much nitrogen fertilizer and lack of phosphorus and potassium fertilizer, is easy to cause leaves to turn yellow, showing that the new leaves are thick, the leaves are mostly uneven, the old leaves gradually turn yellow and fall off, when the leaf tip is serious, even the whole leaf is scorched yellow.

7. The leaves of sweet-scented osmanthus trees turn yellow due to lack of sunlight.

If the indoor light is not enough for long-term maintenance, the growth is weak, the leaves become thin and yellow, do not bloom or rarely blossom.

2. the solution to the yellowing of sweet-scented osmanthus leaves

1. The solution to excessive watering: if the disease is serious, the whole land needs to be removed from the basin and placed in a dry mound to make the water seep out quickly, and then replant it into the pot after the drooping branches and leaves are restored.

2. The solution to the yellowing of sweet-scented osmanthus leaves caused by rotting roots: a small amount of sulfur powder can be sprinkled around sweet-scented osmanthus in early spring to kill bacteria in the rhizosphere. In winter, the trunk was whitened with a mixture of 25 jin of quicklime, 3 jin of salt, 0.5 jin of vegetable oil, 1 jin of sulfur powder and 100 jin of water. Strengthen ditch cleaning and drainage in rainy season. When sweet-scented osmanthus tree trunk appears disease spot, you can smear Fumei arsenic kerosene agent after scraping, and irrigate the root with 500 times dimethazone at the same time. The diseased and dead plants should be dug up and burned in time, and the soil of the original planting site should be disinfected with raw lime water to prevent the spread of bacteria.

3. The solution to the yellowing of sweet-scented osmanthus leaves caused by long-term lack of water: immediately move the flowerpot to a cool place, spray some water on the leaves, and pour a small amount of water. Later, as the stems and leaves gradually return to straight and straight, and then gradually increase the amount of water, if too much water is suddenly poured at this time, it may cause cell wall separation, protoplast damage, and cause flower death.

4. The solution to the lack of fat yellow: pour the pot in time, take off the plant, replace it with a larger pot, put it into a new loose and fertile soil, and replant it. After pouring water, put the seedlings in a half-light place to slow down. After its growth resumes, thin liquid fertilizer or compound chemical fertilizer is applied.

5. The solution to the yellowing of sweet-scented osmanthus leaves caused by sun exposure: immediately move it to a cool place with good ventilation after it is found. If the temperature rises or dry environment as far as possible to take shading and spray methods to improve environmental humidity. Generally speaking, it is the tip of the old leaf, which can be improved as long as the humidity is increased by more than 60%.

6. fat yellow solution: in this case, you should immediately apply fertilizer, increase the amount of water, let the fertilizer flow out from the drainage hole, or pour the basin immediately, remove part of the old soil, wash the soil block with water, replace some new culture soil, and then plant the plant back into the basin.

7. The solution to the lack of light yellow: it is appropriate to arrange the degree and duration of light exposure of sweet-scented osmanthus. To cultivate this kind of flowers, you usually need to put them outside in the sun or half-light, and then move them indoors to watch after flowering.