What about the yellowing of the leaves of orchids? control the amount of water / avoid direct sunlight

Magnolia is a beautiful flower, which has high ornamental value, but no matter how beautiful flowers turn yellow, it will also affect its beauty, so what about the yellowing leaves of magnolia? how to solve it? Next, let's take a look at it.

What if the leaves of Magnolia turn yellow

If you want to know how to do the yellowing of the leaves of orchids, first of all, we have to understand what causes this phenomenon. there are many reasons for this phenomenon, such as improper watering and fertilization, long-term sun exposure, the emergence of diseases and insect pests, and so on. the specific solutions are described in detail below, let's take a look.

1. Improper fertilization

Fertilizer is one of the main nutrients in the growth of magnolia, but fertilization requires skills. If you apply too much fertilizer or apply thick fertilizer directly, it is easy to cause the leaves of the orchid to turn yellow, because the orchid does not need big fertilizer.

Solution: in terms of fertilization, orchids need to apply thin fertilizer skillfully, and do not apply thick fertilizer, large fertilizer and unrotten liquid fertilizer. Before fertilizing, we need to dilute the fertilizer with clean water so that it can be better absorbed.

two。 Improper watering

Although the magnolia likes to grow in a warm environment, it refers to the humidity of the air, not the soil. It likes to dry up a little suddenly. If it is watered too much, it will cause the leaves of the orchid to turn yellow and, in severe cases, cause its roots to rot.

Solution: we must water the magnolia properly, keep the soil in a semi-dry state, normally water once every 10 days, and adjust the watering frequency if the climate change is too great.

3. The light is too bright.

Chinese orchids prefer to grow in a cool environment, but there is no lack of sunlight in the growth process, so they are very particular about lighting. If you put it in direct sunlight to grow, it is easy to cause the leaves of the orchids to turn yellow.

Solution: when we breed the orchid, it is best to put it in a place of sunlight scattering, so that it can carry out photosynthesis without getting sunburned.

4. Diseases and insect pests

In the process of breeding magnolia, if we cultivate it improperly, it is easy to have problems such as diseases and insect pests, which do great harm to the plant, which will not only cause the leaves of the orchid to turn yellow, but also cause the plant to wither and die in serious cases.

Solution: if this problem is caused by diseases and insect pests, we must deal with it in time. The specific treatment methods are introduced in detail in the article "Prevention and Control of Diseases and insect pests of Cymbidium". You can understand it.

5. the new supersedes the old

In the process of the growth of the orchid, with its growth, the new and the old will be replaced, because of the need to develop new leaves, the old leaves will not continue to grow, thus gradually yellowing and falling off.

Solution: if the yellowing of the leaves of Magnolia caused by metabolism, we do not need to worry too much, because this is a normal phenomenon and will not affect the plant.

Conclusion: after reading the above, I believe we all have a certain understanding of the yellowing of the leaves of the orchid. As long as we solve the problem according to the above method, your orchid will certainly get rid of the problem of yellowing.

What to do about orchid leaves yellowing? orchids are indoor plants that many flower friends like to choose to grow, because orchids have high ornamental value, with white and elegant colors and elegant green branches. Putting them indoors can add more vitality to the home and beautify the environment. No matter from the appreciation value of orchids or from her function of purifying air, it is also a good choice for home potted plants. Orchid leaves yellowing, in order to solve this problem, we need to find the causes of orchid leaves yellowing, can not be solved blindly, because the maintenance environment of orchid friends are different, so this paper analyzes and summarizes some common reasons for orchid leaves yellowing. How do orchid leaves yellowing? the cause of orchid leaf tip yellowing is caused by overwatering, which is characterized by no obvious change in old leaves and yellowing in young leaves; this should be controlled immediately. It is that too much water causes the soil to accumulate water for a long time, poor air permeability and even some fibrous roots rot, showing that the young leaves are dark yellow and dull, and the new shoots are shrinking. Too much or too little moisture: orchids like humid climates. if they lack water for a long time, it will cause dry shrinkage, lack of moisture, and leaves will turn yellow and black. Too much watering of orchid pot soil will also cause root rot, yellow leaves, and even death. Drought and yellow is caused by water shortage and drought, which is characterized by the yellow of the old leaves from the bottom to the top. If the water shortage time is a little longer, the yellow leaves of the whole plant, or even death, should be watered in time. Due to the lack of water or dehydration for a long time, although the color of the new leaves is normal, the lower leaves gradually dry yellow and fall off and age. The yellowing of the leaves of sunburned orchids has a lot to do with the temperature. if the indoor temperature is too high or too muggy, the leaves will turn yellow. Strong direct sunlight, especially after summer, leaves have macula, known as sunburn disease. When the high temperature is above 30 degrees, the leaves are also easy to yellowing. The orchid leaves turn yellow and the new buds are smaller, resulting in excessive light, lack of nitrogen fertilizer and necessary humidity. The placement of orchids should be ventilated to overcome the direct sunlight. If the orchid leaves are yellowed and grow normally, it may be caused by excessive light. The solution is to avoid exposure to the sun, regularly wipe the leaves with beer with a rag, and the gentleman orchid scrubbed with beer is not only good-looking but also not easy to lose the moisture of the leaves. Orchid leaves yellowing how to light too little orchids like the sun, if the sun is too little, it will also cause poor plant growth, leaves yellowing. In particular, orchids placed indoors must be placed where the sun can shine. Freezing injury occurs when the orchid is below 0 degrees, and the symptom is still yellow leaves. Fat yellow is caused by excessive fertilization or high concentration, which is characterized by thick, shiny and uneven young leaves; fertilizer, ploughing and watering should be controlled. It is fat and rich, showing that the tip of the old leaf turns yellow and falls off, and the new leaf is thick and shiny, but it is generally concave and convex. If it is a precious flower, you can sprinkle a layer of pakchoi or radish seeds and pull it out a few days after emergence to consume nutrients. Many friends think that more fertilization is very helpful to the growth of plants, but this is not the case. Orchids do not need too much fertilizer. If you apply too much fertilizer, it will cause burns in this part, which will lead to yellowing and blackening of leaves. Chlorosis can also cause yellowing and shedding of leaves and, in severe cases, plant death. Hungry yellow is caused by insufficient fertilizer, low fertilization concentration and long fertilization interval, which is characterized by yellow young leaves and tender stems. If you do not apply fertilizer in time after seeing this phenomenon, it will also cause yellow leaves and even death of the whole plant. For flowers that lack fertilizer, do not apply a large amount of thick fertilizer at one time, so as not to cause root burning. How to deal with the yellowing of orchid leaves? alkali yellow, especially some southern flowers like acidic soil, while the northern water quality is alkaline, the leaves gradually fade, yellowing or even fall off. The easiest way is to pour fermented rice washing water or Rain Water. Due to the great change of soil fertility conditions, woody flowers and plants in iron-deficient yellow leaf greenhouse often appear yellow leaves, which are characterized by obvious young leaves, light old leaves, yellow mesophyll and green veins, and form a typical network, which can be solved by using ferrous sulfate solution. The method is as follows: 7 parts of cake fertilizer, 5 parts of ferrous sulfate and 200 parts of water. If there is a lack of iron in the chlorosis basin soil, the top of the leaf turns yellow first. If there is a lack of nitrogen, the new leaves are yellowish white. Contaminated orchid leaves should be kept clean. If splashed with dirt, the contaminated area may turn yellow. The potted orchids bought directly are newly potted by businessmen, and the orchids do not adapt to the soil, temporarily affecting the absorption of nutrients and leading to yellow leaves. The newly bought orchids are not suitable for orchids to grow in the watering and placement environment. Before buying orchids, they are newly potted, and orchids do not adapt to the soil, which temporarily affects nutrient absorption. The environment of orchids has changed, resulting in poor absorption of water by leaves. The old leaves are yellowed and fall off, which is caused by normal aging or turning the basin. The old leaves yellowed and fell off quickly, watered too often and planted improperly. In addition, flower friends can check whether the rotten roots of orchids or plants are not clean, if the rotten roots are disinfected as soon as possible, dry maintenance in ventilation. What about the yellowing of orchid leaves? leaf spot disease is caused by bacterial infection, which is mainly caused by the change of unmature raw soil, the application of unfermented fertilizer, the long-term failure of basin soil, the imbalance of nitrogen, phosphorus and potassium, and the excessive amount of fertilizer. can happen this disease. In the early stage of the disease, small yellow-brown spots appeared on the leaves, and then the color of the spots gradually deepened, and the area of the spots continued to expand, resulting in festering, so that the whole plant rotted away. Solution: the placement of flowers should be ventilated to overcome the direct sunlight. Orchids often experience leaf tip dryness, or even whole leaf wilt. Flower friends who raise orchids for the first time do not know what to do. Orchid leaf tip dryness is mainly caused by orchid anthracnose and round spot disease. When orchids suffer frost damage or late frost, it is also easy to form leaf tip dryness or discoloration. Let's take a look at the specific solutions. Caused by orchid anthracnose and round spot. The disease occurs in large numbers during the rainy season or when it is hot and rainy at the turn of summer and autumn. The solution is to spray 50% carbendazim or 50% grams of carbendazim 1000 times in the disease-prone period, once every 10 days, for 4 times. Any plant pests will appear the phenomenon of yellow and black leaves, orchids suffer from diseases and pests will cause leaf damage, the emergence of yellow leaves, black leaves. There is not suitable for the use of high pH soil is prone to root rot, root rot black, leaves will also lead to yellowing and shedding. Caused by orchid anthracnose and round spot. The disease occurs in large numbers during the rainy season or when it is hot and rainy at the turn of summer and autumn. The solution is to spray 1000 times of 50% carbendazim or 50% carbendan in the disease-prone period, once every 10 days, 3-4 times in a row. In addition, when orchids suffer from frost injury or late frost, it is also easy to form leaf tip drying or discoloration. Therefore, in areas where the winter temperature is below 0 ℃, orchids should be moved to indoor ventilation and sunny places for maintenance before winter. When you move outside in spring, you should pay attention to avoid the harm of late frost. The traditional experience of "no wind in spring, no days in summer, no dryness in autumn, and no dampness in winter" is of great benefit in preventing orchid leaves from drying up. Orchid leaves yellow how to do orchid leaves dry reason 1, the basin is too dry or air humidity is too small, basin too dry, this kind of situation generally orchid leaves shrink head can not be shown immediately, the first reflection is that the orchid leaves show dehydration, after watering recovery, it is easy to walk grass from the old seedlings, orchid leaves start to go down yellow leaves, if water injury in the basin, orchid leaves yellowing, yellow leaves from the bottom to the top, grass walking time is slow. 2. Langen fungus damage or Langen crystal head affected by water stain should be the same, water stain is a process, crystal head rot is the result, leaf tip coke head is a surface phenomenon. Such a coke tip, as Fei Xiang said, the leaf tip is black, after the treatment in the basin, the general coke head is no longer extended. 3. The focal point is caused by fertilizer damage, and the focal tip is brown or black. The boundary with the non-fat damage orchid leaf is very obvious, and the normal tissue of the orchid leaf is also prone to fat spots, such irregular round spots, the center of the spot is brown, and the place where it comes into contact with the normal tissue is a circle of black spots with uneven thickness, and the boundary is also very obvious. 4. Many of the bacteria damage caused by the orchid strain are shown from the coke tip phenomenon. For example, the blight tip is white-brown, the junction with the normal blue leaf tissue is dark brown, the white brown is the dead dry withered area, the black brown is the fungus outbreak area; the leaf blight, the leaf tip light brown is the dead dry withered area, the dark brown is the fungus damage outbreak area, and most of the contact areas with normal blue leaf tissue are yellowish green, this yellow-green area is the infection area of normal orchid leaf tissue, which is different from the blight tip disease. Anthracnose is also easy to show the focal tip, the leaf tip shows a dark brown, a light brown, alternately to the lower part of the blue leaf, and independent or connected dark-brown patches appear in the leaves, and the periphery of the plaque is yellowish. Solution: when orchids suffer from frost injury or late frost, it is also easy to form leaf tip drying or discoloration. Therefore, in areas where the winter temperature is below 0 ℃, orchids should be moved to indoor ventilation and sunny places for maintenance before winter. When you move outside in spring, you should pay attention to avoid the harm of late frost. Traditional spring is not windy, summer is not day, autumn is not dry, winter is not wet to prevent orchid leaves from drying up. For the orchid leaves that have been withered at the tip, if the situation is not too serious, the method of manual cutting can be used, with scissors, preferably by alcohol disinfection. Cut off about 10 mm below the dry part, so that you can still keep the basin full of green. It would be better if you spray fungicide after pruning. Orchid leaves yellowing how to do orchid leaves yellowing precautions when the wound wants to prevent bacteria changing pots or ramets, there is a wound at the root, you should first smear the wound with fungicide to prevent bacteria from invading. The pot should not be too large and small, and the amount of plant material is too large, which can easily lead to poor ventilation and watering is not easy to control. If watering absorbs too much water, the plant material is not easy to dry, and bacteria invade and cause rotten roots. Orchids should be planted shallowly and orchid plants should not be too deep, otherwise long-term moisture will rot. When planting, filling the root, base, or pseudobulb must be exposed. When planting orchids, the roots should be spread evenly and should not be squeezed together, so that each root can touch the plant material and ventilation is good. If the newly planted orchids are not watered for several days, the roots may be injured, and the wound is coated with fungicides and left unwatered for 3-5 days in order to achieve efficacy and promote the growth of new buds and roots. To avoid strong light, newly planted orchids must avoid direct sunlight to prevent dehydration. They should be placed in a warm and shady place and spray can be used to increase the humidity in the air until the orchids return to normal growth. How to deal with the yellowing of orchid leaves? 1. Watering should be appropriate. After the basin soil is dry, the amount of water should not be too much at one time, nor should it be watered for a long time because of drought. 2, the temperature should be kept stable, but high or too low, 5-10 ℃ is the most suitable, the temperature rises, the muggy environment should pay attention to ventilation, and strengthen humidity management. 3, the white orchid is suitable for planting in the courtyard or home balcony, windowsill and other places, need sufficient sunshine, but can not be exposed to the sun, the summer sun should pay attention to shade. 4. The white orchid pot soil should choose slightly acidic soil, and should not apply more alkaline inorganic fertilizer or water. 0.2% ferrous sulfate should be sprayed on the leaf surface once a week. 5, root rot is mainly caused by too much water, usually wait until the basin soil surface whitening before watering, and often loosen the soil. When Mei Yu dies or Rain Water is too much, it is appropriate to move under the eaves or indoors to take shelter from the rain. For the orchid leaves that have been withered at the tip, if the situation is not too serious, the method of manual cutting can be used, using scissors (preferably by alcohol disinfection) by "∧" in the shape of about 10 mm below the dry part, so that it can still be kept full of green, and it is better to spray on the fungicide after pruning. Note: "not windy in spring, not dry in summer, not dry in autumn, not wet in winter" refers to not moving outdoors too early in spring to avoid strong winds; proper shade in summer to protect against scorching sun exposure; frequent watering in autumn to prevent drought; basin soil should not be too wet in winter to prevent freezing and rotting roots. What about the yellowing leaves of the white orchid? what happened to the yellowing leaves?

Magnolia flowers like light, afraid of high temperature, not cold-resistant, suitable for slightly acidic soil. Like warm and humid, not resistant to drought and waterlogging, sensitive to sulfur dioxide, chlorine and other toxic gases, poor resistance. What if the leaves of the white orchid turn yellow? How do the leaves of white orchids turn yellow and lose their leaves? The following wed114 wedding network editor brings you the details.

The reason for the yellowing of the leaves of white orchids

Too much water

If the watering amount of white orchid is not well controlled, the basin soil is too dry or too wet, which will affect the normal growth of fleshy roots and lead to the emergence of yellow leaves.

The temperature is too high

When there is a problem with temperature control, too high temperature will make leaf transpiration abnormal and yellowing.

Too little light

White orchids need plenty of sunlight, otherwise they will inhibit the normal growth of the plant and produce yellow leaves.

Chlorosis

Chlorosis can easily lead to yellowing and shedding of leaves, and in serious cases, it will kill the whole plant.

Root rot disease

The harm of root rot is also more serious, which will make the roots black and rot, and affect the leaves from bottom to top.

What if the leaves of white orchids turn yellow?

Properly watered

The amount of water should be continuously adjusted according to the climate wettability and other aspects to ensure the normal and appropriate wettability of the soil.

Suitable temperature

In order to avoid excessive temperature difference, it is appropriate to maintain an average temperature of 5-10 ℃. When the temperature increases, special attention should be paid to the ventilation and ventilation of the culture environment and humidification of the dry air.

Plenty of light.

To ensure sufficient light, you need to put the white orchid in the courtyard or home balcony, windowsill and other places where you can see the light for a long time, but in summer, you should pay attention to avoid the direct light, exposure will also adversely affect the plant.

Prevention and treatment of chlorosis

Slightly acidic soil should be selected, a small amount of alkaline inorganic fertilizer should be applied, and when the disease occurs, ferrous sulfate (0.2%) should be sprayed on the leaf surface with a frequency of once a week for 3-4 times, or alum fertilizer and water should be sprayed once a week for 3-4 times to alleviate the disease.

Root rot control

The occurrence of this disease is usually due to excess water, watering should be "no dry, no watering", and keep the soil loose and enhance its drainage. When there is more rainfall during the Meiyu period, timely rain protection measures should be taken for the plants; more broken tiles can be added at the bottom of the basin to speed up the flow of water and promote drainage.

The yellowing of leaves is actually very easy to solve, and each reason is closely related to our daily maintenance work. As long as we can do a good job carefully, there is no need to worry that the green in the basin will be far away from us.