What are the reasons for the yellowing and shedding of Milan leaves? how to do a good job of prevention and control?

One. Low temperature

The yellowing of leaves in Milan mostly occurs in winter, mainly because the temperature is too low in winter. Milan likes to grow in a warm environment. Milan will be frostbitten if the temperature is lower than 5 degrees Celsius during the winter. in the initial stage of frostbite, its leaves will slowly turn yellow and fall off, and it will be hit by the cold wind. Milan's leaves turn yellow overnight.

Once Milan is hit by a cold wind or frostbite, it will be more difficult to save, which will affect its flowering in the second year, so we should pay attention to the heat preservation work in order to make Milan grow healthily.

Two. Improper watering

Although Milan likes to be moist, if it does not change the basin for a long time, its soil will reduce a lot of nutrients and oxygen will become less. After watering, Milan's root system will be in a relatively wet state for a long time, and its respiration will be suppressed. and local roots will cause necrosis, which causes Milan leaves to turn yellow and fall off. At this time, you need to stop watering Milan immediately. If the potted soil is still too wet, you can pour out the plant and replant it.

In addition, in the hot season, if the basin soil is not watered in time, the leaves of Milan will turn yellow. When you encounter this situation, you must not water Milan enough at once, but water it gradually. Let it have a slow process of adaptation before it will slowly restore its former vitality.

Three. There is not enough light

The growth stage in Milan needs plenty of light, and if it is cultured in shade for a long time, the nutrients accumulated by photosynthesis will be less, so the leaves of Milan will turn yellow and fall off.

When you encounter this situation, you should immediately put Milan in a sunny environment, and you need to turn Milan around every month so that it can receive light evenly, even if its leaves turn yellow.

Four. soil acidity and alkalinity

To cultivate Milan, you need to choose a slightly acidic soil. If the soil is alkaline, the leaves of Milan will turn yellow and fall off. In the north, most of the soil is alkaline, so it is common to encounter this situation. If you want to keep the Milan leaves from yellowing, you can try to change the soil of Milan.

In the north, alum fertilizer is watered three to five times a year to reduce the alkalinity in the soil, and the basin is changed once a year. In the south, most of the soil is weakly acidic, so you can directly choose river pond mud for cultivation, turning the basin once a year or two.

Five. Poor ventilation

All plants need good air when they grow. If Milan grows in a non-convective environment for a long time, it is very easy to cause its leaves to turn yellow and fall off. Therefore, at ordinary times, we should pay attention to raising Milan in an environment with good air, and prune the branches that are too dense in time to ensure that it has good light and ventilation during the growth period.

Six. do a good job in disease prevention and control

1. Beetles need to be sprayed with corresponding drugs when they encounter this insect, and if the amount is relatively small, they can be brushed off manually.

two。 Soot disease is easy to have in the environment of high humidity, high temperature and poor ventilation, so we need to pay attention to this aspect in the process of breeding.

What is the reason why Milan spent its leaves? the conservation knowledge of Milan flowers.

Milan is a very favorite flower plant, when it blossoms, it will make the whole room fragrant and popular, but we will find that the Milan flower has lost its leaves not long after we bought it. It will not only affect the beauty, but also let the Milan flowers die, so what should we do if the Milan flowers lose their leaves? Next, let's take a look at the conservation knowledge of Milan flowers.

First, what is the reason why Milan spent its leaves?

1. Watering: too much watering causes the root system to be unable to breathe and suffocate the root. Water cannot be transmitted to the leaf surface. What is shown is that at first the lower leaves curled, dried up, turned brown and fell off, which led to the shedding of the upper green leaves in a short time. Lack of water for a long time, resulting in root system withered, then irrigated with water, a large number of leaves will fall in a short time, and the plant will die. Watering should be strictly in accordance with the "see dry see wet", do not dry do not water, watering will be thoroughly. Basically, it is watered twice a day.

2. Fertilization: Milan flowers have certain requirements for fertilizer, especially during the growing period. If there is not enough fertilizer, the leaves will turn yellow and fall off. Fertilization should grasp the principle of frequent application of thin fertilizer, especially when topdressing in spring, do not apply thick fertilizer. Topdressing should be applied once every 10 days, and an appropriate amount of calcium superphosphate should be added in fertilizer and water, which is beneficial to the growth of Milan flowers.

3. Lighting: Milan flowers like light, which is generally cultivated under bright scattered light. If the room is relatively dark, it will affect the growth of Milan flowers and lead to yellowing and losing leaves. Milan should be kept in a ventilated and scattered place. You can see the morning light every day and move into the room at noon when the sun is shining. See the sunset as the sun sets. This process can last about half a month, so that Milan have a process of adaptation.

4. Diseases and insect pests: leaf spot disease caused by fungi and other bacteria is easy to cause local necrosis of leaves, yellow spots or patches appear, when the whole leaf is withered and yellow and shedding off seriously, and yellow-green mottle appears on the leaves after being infected by mosaic virus; suffer from shell insects, red spiders and so on. The clarification solution of 25 times dry and pure plant ash and calcium superphosphate can be sprayed on the leaf surface every 15 to 20 days, or 0. 1% lime water clarification solution and other pollution-free control, in order to protect branches and leaves, prevent a variety of diseases and insect pests.

2. What if Milan loses its leaves

1. Fertilization: fertilizer should be applied once a month, mainly organic fertilizer and high-efficiency phosphorus and potassium fertilizer, and avoid partial application of nitrogen fertilizer. Each time each pot retting mature and deodorized peanut cake fertilizer or rapeseed cake fertilizer or tea seed cake fertilizer 25g 30g, potassium dihydrogen phosphate or efficient biological phosphate potassium fertilizer 1520g, mixed with water or retting mature and deodorized human and animal manure 2: 3kg, watering: keep the basin soil in a moist state throughout the year, do not dry and crack, but not too wet for a long time, otherwise it will retting roots, rotten roots and yellow leaves. In general, fresh water is watered once a day in summer and autumn, and every 2-3 days in winter and spring, so that water can quickly infiltrate into the basin soil and not accumulate on the basin soil. At the same time, it is necessary to often spray fresh water on the branches and leaves, especially during high temperature in summer and drought in winter, to spray all the branches and leaves evenly, so that it is appropriate to start dripping water, so as to keep the branches and leaves moist and how to prune Milan flowers.

Milan should start pruning and shaping from the seedlings and retain a section of the trunk 15 cm to 20 cm high. Do not let the trunk branches emerge from the soil, but should branch and prune above the trunk 15 cm high to make the plant look plump. The lower branches of perennial plants often grow old and die. Therefore, the north should be cut every other year in high temperature season to promote the adventitious buds in the lower part of the main branch to germinate and grow new lateral branches, so as to keep the tree well-proportioned, strong, leafy and flowering.

Finally, when we find that the newly bought Milan flowers have lost their leaves, don't panic and think about what is wrong with the breeding process. Then in accordance with the above Milan breeding methods to save their own Milan, so that Milan back to life.

The above is the relevant introduction of this article, I believe you have a simple understanding of this after reading it, if necessary, you can continue to pay attention to the No. 1 home network to learn more information.

What if Milan loses its leaves? An Analysis of the causes and Countermeasures of the loss of leaves in Milan; Milan belongs to evergreen shrubs or small trees; adults need plenty of sunlight to adapt to warm and humid climates. Its luxuriant branches and leaves, green and bright leaves, blossom many times in a year, the most prosperous in summer and autumn. When it blossoms, it smells like an orchid. There are often star-shaped rust-colored scales at the top of the branchlets; pinnately compound leaves alternate, yellow flowers, extremely fragrant.

Many flower lovers will encounter such a problem, the Milan flower has lost a lot of leaves, what should we do after this? Today, the editor will introduce to you the reasons and countermeasures for Milan to lose its leaves.

1. Watering

Too much watering causes the roots to be unable to breathe and suffocate the roots. Water cannot be transmitted to the leaf surface. What is shown is that at first the lower leaves curled, dried up, turned brown and fell off, which led to the shedding of the upper green leaves in a short time. Lack of water for a long time, resulting in root system withered, then irrigated with water, a large number of leaves will fall in a short time, and the plant will die. Watering should be strictly in accordance with the "see dry see wet", do not dry do not water, watering will be thoroughly. Basically, it is watered twice a day.

2. Fertilization

Milan flowers have certain requirements for fertilizer, especially in the growing period to have enough fertilizer, if the lack of fertilizer will also cause the leaves to turn yellow and fall. Fertilization should grasp the principle of frequent application of thin fertilizer, especially when topdressing in spring, do not apply thick fertilizer. Topdressing should be applied once every 10 days, and an appropriate amount of calcium superphosphate should be added in fertilizer and water, which is beneficial to the growth of Milan flowers.

3. Lighting

Milan flowers like light, usually cultured under bright scattered light, if the indoor is relatively dark, it will affect the growth of Milan flowers, resulting in yellowing leaves. Milan should be kept in a ventilated and scattered place. You can see the morning light every day and move into the room at noon when the sun is shining. See the sunset as the sun sets. This process can last about half a month, so that Milan have a process of adaptation.

4. Diseases and insect pests

Leaf spot disease caused by fungi and other bacteria is easy to cause local necrosis of leaves, yellow spots or patches, serious withering and falling off of the whole leaf, yellow-green mottle on the leaves infected by mosaic virus, and damage by shell insects, red spiders and so on. The clarification solution of 25 times dry and pure plant ash and superphosphate can be sprayed on the leaf surface every 15 to 20 days, or 0.1% lime water clarification solution can be used for pollution-free control, so as to protect branches and leaves and prevent all kinds of diseases and insect pests.

With regard to the analysis of the reasons and countermeasures for the loss of leaves in Milan, the editor will stop here. You are welcome to continue to pay attention to the succulent flower bed and learn more about flower conservation.