Why is Mo Lan yellow? What is the cause of yellow leaves in Molan?

This can be caused by too much light or a lack of water. We need to move it to a backlit place and hydrate it at the same time.

It may be caused by overwatering, but Moran does not need much water, so try to water and fertilize regularly.

It may be a lack of water, or it may be that the root rot caused by watering too much is the root cause of yellow leaves. Use scissors to cut off the yellow leaves and add some liquid fertilizer.

The problem of dry and yellow leaves in Molan is caused by a lack of water or too much water to rot the roots.

The yellowing of the leaves may be due to normal metabolism.

At this time, it is necessary to cut off the yellowed leaves in time and maintain them for a period of time. It can also be caused by soil waterlogging. In this case, the yellowed leaves should be cut off and transplanted into the soil with good drainage.

It may also be caused by a lack of nutrients due to vigorous growth during the growing season. At this time, it is necessary to moderately increase the frequency of fertilization, and pay attention to applying more dilute fertilizer.

1. Normal metabolism.

1.Reason: If there are no other symptoms and the rise of Molan is not too bad, then there is no need to worry, the old leaves fall off and the new leaves grow is a normal metabolic phenomenon, which belongs to the plant's own regulatory mechanism in order to adapt to the surrounding environment.

2.Treatment: If there is just a normal falling off, flower friends don't have to worry too much, as long as the yellowing leaves are cut off in time to prevent attracting pests. After a period of careful maintenance, it will return to normal.

2. Soil waterlogging.

1.Reason: It needs a lot of water supply during the growth period, but its root system is not waterlogged, so it must not have the phenomenon of soil waterlogging. Long-term immersion of the root system in stagnant water will cause the roots to rot, so that they cannot draw water from the soil, resulting in yellow leaves.

2.Treatment: Clean up and drain the accumulated water first, and then observe the rotten roots, if the situation is worse, you need to dig it out with a small part of the soil, and then cut off the yellowed leaves on it.

Then transplant it into the soil with good drainage performance and reduce the frequency of watering.

3. Insufficient nutrition.

1.Reason: In August every year, Melan will enter the vigorous growth stage. At this time, if the frequency of fertilization is too low, there will be insufficient nutrients in the soil to support its normal growth and development, and then yellow leaves will appear.

2.Treatment method: It should be paid attention to the growth period in spring and August every year, during which the frequency of fertilization should be moderately increased, and more water-soluble fertilizer should be applied to fertile leaves.

Hello friends, the reason for the yellow leaves of Molan is mainly because of the reason that there is more watering, the roots can not absorb water to lack air, this should be dry, watering is not dry and not watering the leaves are often sprayed with potassium dihydrogen phosphate.

There are five reasons for the yellowing of the leaves of the orchid: insufficient light, excessive watering, temperature effects, excessive fertilizer, and pests and diseases

1.Inadequate illumination

I believe many friends know that when the leaves of flowers are exposed to too strong sunlight, the leaves are "burned". Similarly, for plants like to grow towards the sun, if there is not enough light during the growth period, it is difficult to synthesize chlorophyll and photosynthesis in the plant, so this also leads to the yellowing of the leaves of the plant.

Therefore, it is necessary to place Molan in a sunny place, relatively speaking, the sun in the early morning is warmer and can be used well; In the afternoon, when the sun is stronger, especially in summer, it is necessary to shade Mo Lan to a certain extent, and the same habit should be maintained in autumn and winter, and should not be neglected.

2.Overwatering

If the water is too much at one time, the plant can only absorb a part of the water, and the remaining part is left in the soil to cause water accumulation, which then causes root rot, and finally affects the leaves to begin to turn yellow, and the plant can not even survive in serious cases. Therefore, when watering, it is necessary to start watering slowly from the soil around the rhizome of Molan, not too urgently, and stop watering when the potting soil is more wet.

3.Temperature effects

The yellowing of the leaves is also caused by the growth of black orchids in a cooler environment, especially in the autumn and winter in the north. Therefore, it is very important to put Molan in a suitable environment, the temperature difference is best not too large, usually kept at about 16-30 degrees is appropriate, in winter, the Molan is moved to the indoor culture can be safely wintered, when the temperature does not exceed 23 degrees, Molan will enter a dormant state, it is best to maintain this state.

4.Excessive fertilizer consumption

In fact, even in the growing season, the need for fertilizer is not too high, if you do not pay a little attention to the plant, too often fertilize the plant, so that over a period of time, it will also cause the leaves to turn yellow, thus affecting the growth and beauty of the plant. Therefore, it is best to apply fertilizer once in about 10 days, if it is in winter, it is more necessary to fertilize the number of times, which can be reduced to half a month or about once every 3 weeks, and fertilizer should be fertilized at the same time as an appropriate amount of water.

5.Subject to pests and diseases

Due to the influence of uncontrollable factors such as the environment, and Mo Lan is also more susceptible to the influence of pests and diseases, such as being infected by some fungi, plants suffering from leaf spot disease, etc., many times this situation will also lead to the yellowing of Mo Lan leaves.

Therefore, the solution is to first cut off some diseased branches and leaves, disinfect the wound, and then change the Mo Lan to a slightly dry environment to avoid further infection.

1) Specific reason: If the plant is in a particularly strong light place for a long time, especially if the temperature is very high, then the leaves are easy to turn yellow after sunburn.

2) Solution: Put it in a cool and ventilated location for a period of time, and after the plant is almost recovered, you can slowly see the light. The light should be scattered, not too strong.

1) Specific reasons: If you water too much, it will lead to rotten roots, or a large amount of water will be left on the leaves, which will easily make the leaves yellow.

2) Solution: Watering can not be watered too much at one time, do not continue after watering thoroughly. In addition, do not splash water on the leaves, and pay attention to ventilation to enhance evaporation.

1) Specific reasons: too much fertilizer and too much concentration are easy to produce fertilizer damage. In addition, they may also turn yellow if the fertilizer is uneven or if the fertilizer water gets on the leaves. yards or fibers.

2) Solution: Don't fertilize too often. Sprinkle the fertilizer evenly. Do not get the manure and water on the leaves.

1) Specific reasons: In winter, when the temperature is particularly low, frost damage occurs, and the leaves may turn yellow.

2) Solution: In winter, move the plants indoors or other warm places to maintain, not below zero.

1) Specific reasons: When the environment is not suitable, diseases are easy to occur, and the leaves are easy to turn yellow.

2) Solution: Dispose of the infected leaves, and then spray.

Watering too much You must pay attention when watering Molan, you can't water too much at once, the water can't be absorbed in the soil, and it can easily lead to root rot. When the roots rot, the leaves will slowly turn yellow, or even die entirely. In addition, the watering method should also be appropriate, many times we are used to watering from the head, which can easily cause water to flow into the shoots, and also cause the leaves to turn yellow.

The right way is to water in winter and spring, and it is best to water around sunrise, and also spray to increase the humidity of the air to facilitate the growth of Molan.

In summer and autumn, it is advisable to dry the foliage around sunset and before nightfall.

When the surface of the substrate is dry, it is necessary to water it as soon as possible, and do not dry it for too long. And the watering method should be correct, and it is better to water along the edge of the pot.

Excessive fertilization The growth of Molan is not very large for fertilizer, and if it is fertilized frequently for a long time, it will lead to excess nutrients in the potting soil, and over time, it will cause the leaves to turn yellow.

The right way to fertilize should be moderate, not too much. Fertilize once a week during the growth period, grow slowly in autumn and winter, apply fertilizer once in 20 days, do not water on the leaves when fertilizing, pour a small amount of water after fertilization, and clean the residual fertilizer in the soil.

Fertilization must be done in the evening on sunny days, as there is a risk of root rot on cloudy days.

The temperature is too low If it is winter, the yellowing of the leaves of the black orchid is mostly caused by the temperature being too low and frozen, especially in sub-zero temperatures.

The right way to pay attention to the frost protection of Melan, do not put it outdoors in winter.

The most suitable temperature for the growth of Melon is 18 28 , and in winter it is below 10 and grows slowly and enters dormancy. However, the winter temperature should not be too high, as a temperature above 25 will affect the dormancy of Melan and affect the growth of the following year.

Insufficient light: Too much light can easily cause sunburn and sunburn on the leaves.

Excessive shading or long-term indoor storage will affect the photosynthesis of orchids, resulting in yellowing of leaves, poor growth and difficulty in flowering.

The right way to get more sunlight, especially before 9 a.m., is very beneficial for orchid growth and flowering.

There should be 40%-50% shade on sunny days in winter and spring, and 80%-90% shade on sunny days in summer and autumn.

Pests and diseases Moran prefers a relatively humid growing environment, but poor ventilation and high humidity are prone to ink spot and mycosis hazards. If Mo Lan is sick, it will also cause the leaves to turn yellow, and Mo Lan has more diseases, the correct way is to pull out the diseased plants, strengthen ventilation, and reduce humidity.

Spray the fungicide in time, once every half month, 3 times in a row.

The growth environment of Molan should be ventilated and well-lit, and the leaves are easy to sunburn in high temperatures in summer, causing the leaves to turn yellow, so it is necessary to pay attention to the light in the growth environment of Molan. Avoid strong light.

When watering Molan, you must pay attention to not watering too much at once, the water cannot be absorbed immediately in the soil, which can easily lead to the rot of the roots of Molan, the roots will become rotten, and the leaves of Molan will slowly turn yellow, and even the whole plant will die. Watering methods should be appropriate. When we water the plant, we can't water it from the head of the plant, so it is easy for the water to flow into the new leaf buds, causing the leaves to start rotting, so it is better to water along the edge of the pot.

Fertilizer should be sprinkled in moderation. Mo Lan's dependence on nutrient fertilizers is not too great, if it is fertilized frequently for a long time, it will lead to excess nutrients, and over time, it will also cause yellowing of leaves, therefore, fertilizer sprinkling should be moderate, not too much.

Prevent the temperature from getting too low. The yellowing of the leaves of the orchid in winter is mostly caused by freezing at too low temperatures, especially in sub-zero temperatures, so do not put it outdoors in winter.

Yellowing of Moran leaves? In time, the leaves are thick green and the flowers are fragrant.

The leaves of Moran are soft and clicky? Hurry up and stop fattening.