The leaves of the orchid gradually turn yellow, which is caused by the lack of something

Fat yellow. Due to excessive fertilization or excessive concentration, the tips of the new leaves appear dry brown, and the tips of the old leaves are dry and scorched and yellow, and the leaves are generally leaves.

Although the surface is thick and shiny, most of it is uneven. Fertilizer should be stopped or rinsed with water.

Lack of fat yellow. Potted flowers are only watered for a long time without watering fertilizer, or not changing pots for many years, the roots are clumped, and the plants can not get fertilizer, so that they can not be fertilized.

The leaves are yellow, in addition to changing the pot in time, thin fertilizer should be applied frequently.

Seared yellow. Potted plants and foliage plants that like shade and dampness, such as spider plant, evergreen, one-leaf orchid, hosta arrowroot, etc., such as through strong sunlight.

Direct exposure, yellow tips often appear on the leaves, which should be placed in the shade.

Alkaline yellow. Flowers that like acidic soil, such as azalea, mast camellia, osmanthus orchid, etc., such as potting soil or water quality is alkaline, often cause leaves.

From green to yellow, or even falling off, in addition to using acidic nutrient soil for cultivation, you can use alum fertilizer water or. 5%

of ferrous sulfate.

Spraying with aqueous solution can make the leaves turn from yellow to green.

Damp heat yellow. Some flowers that are not resistant to high temperature and high humidity are yellowing caused by hot summer, poor ventilation and improper shade.

If the Admiralty is hung upside down, the rhododendron has this phenomenon in a hot and humid environment, pay attention to ventilation and cooling, and the potting soil can not be overheated.

Albino yellow. The lack of light in the flowers during the normal period reduces the chlorophyll in the leaves, which makes the green color of the leaves gradually disappear and show albinism.

disease, you can move the plant to a sunny place to make the leaves slowly turn green.

The leaves also turn yellow and fall off. In addition, flowers that are damaged by pests and diseases can also cause yellow leaves to fall off. If there is less in the lower part of the plant.

Several leaves turn yellow and fall off, which is a normal phenomenon.

The orchid leaves are faintly yellow, what elements are missing, and I naturally understand after listening to it.

There are 6 ways to save orchid leaves from yellowing and wilting: pruning yellow leaves, light management, proper watering, root pruning and replanting, reducing fertilization, and eliminating diseases.

1.Prune the yellow leaves

Solution: When the number of yellowing of orchid leaves is small and the area is small, you can not prune first, strengthen maintenance management, and wait for the leaves to slowly turn back to green, if the number of leaves yellowing is large and the area is large, and there are dry, drooping and malaise, etc., it may be because of the infection of germs, it needs to be sterilized with scissors and cut off with the petiole together, cut off and burned, and spray carbendazim on the plant to disinfect and sterilize.

2.Lighting management

The yellowing of orchid leaves may also be caused by improper light, when the plant is exposed to strong direct light, the leaves will turn yellow when burned, or the orchid will be cultivated in a dim environment for a long time, and the leaves will fade and turn yellow due to the lack of light to synthesize chlorophyll.

Solution: After pruning off the yellow leaves, place them indoors with sufficient scattered light, and release them outdoors to receive light when the light is weak.

3.Water properly

When orchids need a lot of water, too little watering can easily cause dehydration of the plant, and the leaves of the plant will not only turn yellow after dehydration, but also may wither.

Solution: It needs to be watered in time, watering follows the principle of "seeing dry and wet", watering when the surface of the soil is dry, and watering can only be stopped until the water seeps out from the bottom of the pot.

4.Root trimming and replanting

When overwatering and fertilizing too thickly, it can cause damage to the roots, causing the roots to rot, and the rotten roots cannot deliver enough water and nutrients to the leaves, and the leaves will lack water and nutrients and the leaves will be yellow.

Solution: The roots need to be dug out of the soil, pruned to remove rotten roots, wilted roots and dense roots, apply carbendazim to the wound to disinfect, and then place it in a ventilated place to dry until the wound shrinks, and then change the soil and replant after the wound shrinks.

5.Reduce fertilization

Long-term application of large amounts of fertilizer, or the use of fertilizers that are too concentrated, can easily cause the yellowing of orchid leaves.

Solution: Appropriately reduce fertilizer when fertilizing, and water once in the second article after fertilization to dilute the fertilizer.

6.Disease elimination

When orchids encounter diseases, their leaves also turn yellow.

There are four reasons why the leaves of orchids are yellow and dry. First, the soil is not suitable, the soil used is sticky or contains insufficient nutrients, and it is easy to have yellow leaves and dry leaves for a long time. Change the soil as soon as possible.

The second is the lack of water, it prefers a humid environment and is not drought tolerant. If you don't water for a long time, there will be a dry yellow situation, so replenish water and spray water as soon as possible. Third, the light is too strong, and it needs to be shaded as soon as possible and moved to a cool and ventilated place.

Fourth, it is infected with pests and diseases, and in serious cases, medication is required.

What is the reason why the leaves of orchids are yellow and dry.

First, the soil is unsuitable.

The growth of orchids is very demanding on the soil. If the soil used during the cultivation period is too viscous or the nutrients contained are insufficient, the root system will not breathe well in such an environment, and will not be able to absorb nutrients and water, and the leaves will be prone to yellowing and drying up after a long time. It is advisable to change the soil as soon as possible to ensure that the soil used is soft, breathable and rich in humus, so that the soil can grow vigorously.

2. Lack of moisture.

Orchids like to grow in a humid environment, if you forget to water for a period of time, the soil is dry and water-deficient, it is prone to drought and yellow. It is necessary to water it as soon as possible and move the orchid to a well-ventilated environment. In addition, it is important to pay attention not only to the moisture of the soil, but also to the humidity, which needs to be sprayed regularly when the climate is dry.

3. The light is too strong.

Orchids are semi-negative plants that are afraid of strong light and direct light. If it is left in an environment with direct light for a long time during the maintenance period, it is easy to get sunburned, and the leaves will dry up and turn yellow. In this case, it is necessary to shade the sun as soon as possible, move to a cool place, and spray water frequently to promote a quick recovery.

Orchid. 4. Infection with pests and diseases.

The yellowing and drying of the leaves of the orchid may also be due to the unsuitable environment and the infection of pests and diseases, which leads to the recommendation to cut off the diseased part and spray the sterilization and disinfection drugs. If there is an insect infestation, kill it as soon as possible, and after treatment, maintain it in a ventilated place, and it will slowly resume growth.

Orchids love shade, are afraid of the sun, like warm, humid climate, avoid heat, dry. It is required to be planted in well-drained, humus-rich slightly acidic soil. Place of Placement:

Orchids should not be exposed to strong sunlight, like shade, should be placed in a ventilated and cool place, and avoid the harm of soot and toxic gases and dust. So you can remember: love the sunrise, avoid the sunset, like the warmth of the south, fear of the cold of the north, and avoid soot, these few mantras.

We should also pay attention to the four precepts, namely: no spring out, no summer day, no dry autumn, and no wet winter. Watering:

Orchids should be dry but not wet, as the saying goes: dry orchid wet chrysanthemum. The water quality should be river water and rainwater, and the tap water must be stored for 1 to 2 days to volatilize the harmful gases before use.

Orchid soil should not be too wet, but the air environment should be moist, so in the dry season, in addition to shading, it is also necessary to spray to increase air humidity. Fertilization: Orchids like soybean meal, cake fertilizer, and acidic fertilizers, such as ammonia sulfate, potassium dihydrogen phosphate, etc.

Diluted liquid fertilizer after fermentation is applied every 15 to 20 days during the growing season. Ratio: (9 parts water, 1 part fertilizer) The next day should be returned to the water to prevent burns to the roots.

A total of 4 to 5 times a year can be, and fertilization must not be applied during the dormant period. If you can do the above well, you will definitely be able to cultivate 1 orchid with a green leaf and a floral fragrance.

Orchid leaves are yellow, and there are generally these 5 reasons, which can be effectively solved by prescribing the right medicine.

In addition, if there is too much water at the bottom of the orchid pot, it will affect the oxygen intake. If there is a lack of oxygen, the orchid root system will not be able to absorb the required nutrients normally, so it will cause the leaves to turn yellow and dry and so on. If the situation is not severe, the soil can be loosened to promote water evaporation.

If the situation is severe, the orchid can be removed from the pot, the roots can be cut off and transplanted into the new soil.

Second, light is not suitable Light is also more important for the growth of orchids. Lack of light can cause poor growth of orchid plants, but if the light is too strong, it is easy to burn the leaves, causing them to turn yellow and fall off. Especially in the hot summer.

Therefore, under normal circumstances, the orchid should be placed under scattered light, and the appropriate amount of sunlight should be received, so that the leaves can be kept in a relatively healthy state, and attention should be paid to ventilation and put in a cool place.

Third, fertilization errors Orchids do not like thick fertilizer, so excessive fertilization may easily cause fertilizer damage, the roots will be blackened and cause the leaves of the orchid to turn yellow and die, generally less times and more, to choose a safe electricity slow-release fertilizer, and to be far away from the roots, too close is also easy to burn the rhizome, resulting in the yellowing of orchid leaves. Therefore, how to fertilize more appropriately also needs to do homework.

Fourth, pests and diseases Especially in summer, when the weather is very hot, orchids are very vulnerable to the crisis of pests and diseases. Orchids that are disturbed by pests and diseases will have yellowing and dry leaves, and may even slowly spread to the entire plant. So be sure to pay great attention to it and find it out as soon as possible.

Fifth, metabolism If the orchid is to grow normally, then its plants must also grow. When new leaves grow, the old leaves will slowly turn yellow and wither and fall off, but this is also a very metabolic process, so there is no need to worry too much.

1. Water yellow, that is, too much water causes the soil to accumulate water for a long time, poor air permeability and even some fibrous roots rot. It shows that the young leaves are dark yellow and dull, and the new shoots are shriveled.

Second, fat yellow, that is, fat, manifested as the old leaves branch tips turn yellow and fall off, although the new leaves are thick and shiny, but generally uneven and unstretched. If it is a precious flower, you can sprinkle a layer of cabbage or radish seeds, and pull it out after a few days of emergence to consume nutrients.

3. Dry yellow, due to long-term lack of watering or dehydration, although the new leaves are normal in color, the lower leaves gradually dry and yellow fall off and age.

Fourth, alkali yellow, especially some southern flowers like acidic soil, while the northern water quality is alkaline, and the leaves gradually fade and turn yellow or even fall off. The easiest way to do this is to pour fermented rice washing water or rainwater.

1. Reason: If the leaves of the orchid have the problem of yellowing, it may be because the frequency of watering is not controlled well and too much water is watered. If the water is not absorbed in time, it will remain in the soil and cause the plants to become waterlogged.

As a result, it is unable to absorb nutrients normally, and yellow leaves appear.

2. Treatment method: first prepare some flower soil with good drainage and no stagnant water, replace it for the plant, and then control the watering in the subsequent maintenance process.

1. Reason: It needs certain nutrients to synthesize pigments and make the leaves appear normal green. If you forget to apply flower fertilizer when raising it, it will not be able to synthesize these pigments normally, and its leaves will also turn yellow because of it.

2. Treatment method: add some flower fertilizer to it in time. However, do not apply a thick fertilizer, but a thin fertilizer. You can do it more often, but not too much at once.

1. Reason: It prefers shade, and if the leaves are exposed to the sun for a long time, they will be burned and turn yellow.

2. Treatment method: cut off the seriously injured leaves, and then transfer it to a semi-shaded place, slowly maintain, and wait for it to recover.

Orchid is a very ornamental plant, but in the process of maintenance, it will be easy to have yellow leaves, which makes many flower friends have a headacheThe yellowing of the leaves of an orchid can be caused by a variety of reasons, and the root cause of the problem must be found in order to better solve it. The second situation is that the light is not correct, the light is very important for the growth of orchids, the lack of light will make the orchid plant grow poorly, but if the light is too strong, it is easy to burn the leaves, resulting in yellowing and falling off the leaves. Therefore, orchids should be cultivated in a brightly lit place, pay attention to ventilation, and receive sufficient light in an appropriate amount, so that the orchids can grow healthily, and the leaves will not turn yellow.

The third case is improper fertilizationFertilizer can not be too thick, orchids do not like thick fertilizer, excessive fertilization is easy to cause fertilizer damage, the roots will be burned, the leaves will also be yellow, so fertilization needs less times and more amounts, so you can choose a safe plant nutrient solution, bamboo green green brand green leaf king effect is relatively good, you can use it without dilution, do not worry about the concentration, and the nutrition is also very comprehensive, to meet the needs of orchid growth, I used about half a month, orchid leaves yellowing phenomenon has improved significantly.

What is the reason why the leaves of orchids are yellow and dry.

1. Metabolism.

The yellowing of orchid leaves may be a normal metabolism, and the lifespan of orchids is around 3-5 years. If the leaves of orchids that are more than three years old turn yellow and wilt, it is a normal physiological aging, and there is no need to worry too much, just clean up the dead leaves in time. Similarly, orchids in the pot stage may also have yellow leaves, which can be maintained normally.

2. Discomfort of potting soil.

Orchids prefer to grow in acidic soils, and if the pH of the soil is not suitable, the leaves may fade and turn yellow, or even fall off. If possible, you can directly replace the slightly acidic cultivation medium, or you can add well-rotted peanut shells or willow bark to the potting soil to neutralize the pH.

3. Watering too often.

It may also be due to over-watering, orchids are suitable for growing in dry potting soil, and if you are diligent in watering during the maintenance process, the root system may rot and turn black, and the planting material will also harden, and the orchid leaves may become charred. The young leaves are pale yellow, and the old leaves are dark yellow, so you need to change the potting soil in time and control the watering thereafter.

4. Improper fertilization.

Orchids are suitable for thin fertilizer and frequent application of Bika water-soluble fertilizer, avoid thick fertilizer and fertilizer, otherwise it may produce fertilizer damage, and the newly grown leaves of orchids will be black, and the leaf surface is not stretched. The aging leaves will gradually wither and fall off, and they need to be temporarily cut off from fertilizer, and timely watering to dilute the nutrients in the soil.