The leaves of Milan flowers turn yellow.

When Milan is in indoor maintenance, the leaves are often yellowed and fallen leaves, and the main reasons for the yellowing of Milan leaves are as follows.

1. Low temperature

Milan likes warmth, and chilling injury will be caused if it is lower than 5 ℃ for a long time during overwintering, which will lead to yellowing and shedding of leaves.

2. Improper watering

Milan likes to be moist. If the physical and chemical properties of the soil become worse and become too wet for a long time after watering, the respiration of the root system will be inhibited, and the local root system will be necrotic and cause leaf yellowing and shedding. In addition, in the high temperature season, if the watering is not timely and the basin soil is too dry, the leaves will yellowing and fall off in a short period of time.

3. Lack of light

Milan likes plenty of sunshine. If kept in indoor shade for a long time, synthetic nutrients are often reduced, resulting in yellowing and shedding of leaves.

The reason for the yellowing of Milan leaves: low temperature

The yellowing of Milan leaves often occurs in winter, mainly because the temperature is too low. Milan likes a warm environment, where frostbite occurs when the overwintering temperature is below 5 ℃, and the initial stage of frostbite is characterized by the gradual yellowing of leaves and shedding. Another thing is that Milan turned yellow overnight because of the cold wind.

Once the plant is frostbitten or blown by the cold wind, it is difficult to save, which will affect the flowering of the next year, so pay attention to the heat preservation work at the beginning of winter.

The reason for the yellowing of Milan leaves: improper watering

Milan likes to be wet. If the basin is not changed for a long time, the nutrients in the soil will be reduced and the oxygen will be less. After watering, the root system will be in a wet state for a long time, the respiration will be inhibited, and the local root system will cause necrosis and leaf yellowing. At this time, it is necessary to stop watering immediately. If the pot soil is too wet, the plant can be removed from the pot and replanted.

In addition, in the high temperature season, the watering is not timely, the basin soil is too dry for a long time, and the leaves will turn yellow in a short time. At this time, do not water enough water at one time, to step by step, so that the plant slowly recover.

The reason for the yellowing of Milan leaves: lack of light

The growth of Milan needs plenty of sunlight, and if it is kept in shade for a long time, photosynthesis accumulates less nutrients, which leads to yellowing and shedding of leaves. At this time, immediately move Milan to the sun, turn the direction every month, so that Milan receive light evenly. Even if the leaves turn yellow, they will recover slowly.

Reason for yellowing of Milan leaves: soil acidity and alkalinity

Milan likes slightly acidic soil, if the soil is too alkaline, it will cause the leaves to turn yellow. Most of the soil in the north is alkaline, so it is difficult to avoid this situation. The easiest way is to try to change the pH of the soil. In the north, alum fertilizer is irrigated 3-5 times a year to reduce the alkalinity of the soil; change the basin once a year, cultivate and choose field soil, pine needle soil and a small amount of river sand. Most of the soil in the south is weakly acidic, so it can be cultivated directly with river pond mud, turning the basin once every two years.

The reason for the yellowing of Milan leaves: poor ventilation

The growth of any plant requires good air quality. in general, if Milan grows in a place where the air is not convective for a long time, it is also prone to yellowing leaves. Usually, we should pay attention to window ventilation, and cut off the overdense branches and long branches in time to ensure good lighting and ventilation.

Introduction to the causes of yellowing leaves of Milan flowers

Milan flower prefers warm, humid and sunny environment, not cold-tolerant, slightly shade-tolerant, and adapts to a wide range of soil, but the slightly acidic sandy soil with deep, loose and fertile soil layer is the best, and the winter temperature is not lower than 10 ℃. What if the leaves of Milan turn yellow? Today, the editor of wed114 wedding network brings you an introduction of the reasons why the leaves are yellowing. Let's take a look at the details.

An introduction to the reasons for the yellowing of Milan leaves

1. Low temperature

The yellowing of Milan leaves often occurs in winter, mainly because the temperature is too low. Milan likes a warm environment, where frostbite occurs when the overwintering temperature is below 5 ℃, and the initial stage of frostbite is characterized by the gradual yellowing of leaves and shedding. Another thing is that Milan turned yellow overnight because of the cold wind.

Once the plant is frostbitten or blown by the cold wind, it is difficult to save, which will affect the flowering of the next year, so pay attention to the heat preservation work at the beginning of winter.

2. Improper watering

Milan likes to be wet. If the basin is not changed for a long time, the nutrients in the soil will be reduced and the oxygen will be less. After watering, the root system will be in a wet state for a long time, the respiration will be inhibited, and the local root system will cause necrosis and leaf yellowing. At this time, it is necessary to stop watering immediately. If the pot soil is too wet, the plant can be removed from the pot and replanted.

In addition, in the high temperature season, the watering is not timely, the basin soil is too dry for a long time, and the leaves will turn yellow in a short time. At this time, do not water enough water at one time, to step by step, so that the plant slowly recover.

3. Lack of light

The growth of Milan needs plenty of sunlight, and if it is kept in shade for a long time, photosynthesis accumulates less nutrients, which leads to yellowing and shedding of leaves. At this time, immediately move Milan to the sun, turn the direction every month, so that Milan receive light evenly. Even if the leaves turn yellow, they will recover slowly.

4. Soil pH

Milan likes slightly acidic soil, if the soil is too alkaline, it will cause the leaves to turn yellow. Most of the soil in the north is alkaline, so it is difficult to avoid this situation. The easiest way is to try to change the pH of the soil. In the north, alum fertilizer is irrigated 3-5 times a year to reduce the alkalinity of the soil; change the basin once a year, cultivate and choose field soil, pine needle soil and a small amount of river sand. Most of the soil in the south is weakly acidic, so it can be cultivated directly with river pond mud, turning the basin once every two years.

5. Poor ventilation

The growth of any plant requires good air quality. in general, if Milan grows in a place where the air is not convective for a long time, it is also prone to yellowing leaves. Usually, we should pay attention to window ventilation, and cut off the overdense branches and long branches in time to ensure good lighting and ventilation.

What if the leaves of Milan turn yellow?

Milan likes to be moist and should be watered properly during its growth. If too much watering, it is easy to lead to rotten roots, leaves yellowing, leaf loss and other phenomena; too much watering during flowering period, it is easy to cause falling flowers and buds; too little watering will cause leaf edge withering and withering buds. Therefore, when the summer temperature is high, in addition to watering water 1 / 2 times a day, branches and leaves are often sprayed with clean water and sprinkled to the ground to improve air humidity. At the same time, fertilization should also be appropriate.

As Milan blossoms more often in a year, after each blossom, we should fertilize 2-3 times of fully mature thin liquid fertilizer in time, so that it can blossom continuously and have a strong aroma. Milan likes acid soil, so it is appropriate to choose rotten leaf soil as the main culture soil in pot cultivation. During the peak growth period, 0.2% ferrous sulfate solution is sprayed once a week, and the leaves are green and flowers are numerous.

Growth habits of Milan Flower

Like warm, humid and sunny environment, not cold-resistant, slightly shade-tolerant, adapt to a wide range of soil, but in the soil layer deep, loose, fertile slightly acidic sandy soil is the best, the winter temperature is not lower than 10 ℃. In sparse forests or shrubs in low-altitude mountains.

Milan likes to be warm, sunny and fat. The suitable temperature for growth is 20 ℃ ~ 25 ℃. Under normal circumstances, when there is plenty of sunshine and a high temperature (about 30 ℃), the flowers will have a strong fragrance. If it is placed in shade in summer and a large amount of nitrogen fertilizer is applied at the same time, it will cause Milan not to blossom or blossom less, with a light fragrance and so on. Therefore, during the period of growth and development, Milan needs to be maintained in a sunny place outdoors, and it is necessary to pay attention to applying more liquid fertilizer containing more phosphorus, and it is best to apply crushed bones, fish bones, chicken bones, etc., often supplemented with chemical fertilizer containing more phosphorus or fermented rice washing water, which is helpful to pregnant buds and make them blossom, golden and fragrant.

Milan grows slowly and lives long, and century-old trees can still blossom.