What if the leaves of the orchid turn yellow? seven moves to make the leaves green / water and fertilizer for a year is the key.

Thick green leaves, broad and open to both sides, neat and good-looking, this is the gentleman orchid. Keeping it at home is definitely a kind of visual enjoyment. However, in the process of breeding, due to various reasons, the leaves of Cymbidium will appear yellowing symptoms, then how to do the leaves yellowing? This requires our rich experience, first find the cause, and then solve the problem. The specific causes and solutions of the yellowing of Cymbidium leaves will be introduced by the editor.

First, the gentleman orchid leaf yellowing how to do, look for the cause

Most of the beauty of the gentleman orchid is reflected in its fat green leaves, so once improper maintenance leads to the yellowing of the leaves, it will not only affect its growth, but also affect its ornamental effect. As for the gentleman orchid leaves yellowing how to do, in fact, it is not difficult to find the reason for the solution. The following are 7 of the magnolia leaves yellowing and solutions, you must see if you love flowers.

Second, the yellowing of the leaves of Cymbidium and its solution

1. Environmental change

Most people buy orchids directly from florists, so the reason why the leaves of orchids turn yellow, we should first consider the environment other shore flowers. And this is actually a normal reaction, because some gentleman orchids are bought from the Internet, the growth environment may change greatly, so that it can not adapt at all, resulting in yellowing symptoms of leaves.

Solution: communicate with the seller before buying and try to make the orchid overdo it in the same environment, or you can slowly change its environment so that it has an adaptive process.

2. Overwatering or lack of water

In the method of watering magnolia, we introduced the importance of watering, too much or too little will not work. Too much watering: when the water in the basin is long, the leaves of Cymbidium are easy to infiltrate and turn yellow, the occurrence site is the tip of the tender leaves, and the symptoms develop from top to bottom; lack of water: if it is too dry, or half of the water is watered every time, the old leaves will be yellow.

Solution: when watering too much: immediately control watering, and often loosen the soil, so that the soil ventilation is good. Or simply change the basin soil, let the gentleman orchid refresh again; lack of water: according to the correct method of watering the gentleman orchid, appropriately increase the number of watering times.

3. Excessive fertilization or lack of fertilizer

Fertilization is also a key link in the cause of the yellowing of the leaves of Cymbidium. Excessive fertilization: will cause root burning, yellow tip of leaves; lack of fertilizer or iron deficiency, symptoms: the top of the leaves turn yellow first, and the new leaves are yellow-white.

Solution: when fertilizing too much: immediately stop fertilizing, increase the amount of water, make the fertilizer flow out from the drain hole; or immediately pour the basin, rinse the soil block with water and then plant it back into the basin; when lack of fertilizer: properly apply iron-containing fertilizer, or need to pour the pot in time, change into the new fertile and loose culture soil, and gradually increase the application of compound flower fertilizer or rarefied liquid fertilizer.

4. The light is too strong

Too much attention leads to sunburn disease, which is also one of the reasons why the leaves of Cymbidium are yellowed. When the orchid is placed in strong direct sunlight, its leaves will have macula, which is easy to burn out even in a high temperature room.

Solution: avoid exposure to the sun, regularly wipe the leaves with beer with a dishcloth, and the gentleman orchid scrubbed with beer will not only look good but also not easy to lose the moisture of the leaves.

The temperature is too high or too low

In the cultivation methods and matters needing attention of Cymbidium, temperature is also a very important link. Once the standard is not up to standard, its leaves will turn yellow. When the temperature is above 30 ℃, the leaves of Cymbidium are easy to yellowing; when the temperature is below 0 ℃, freezing injury will occur, and the symptom is that the leaves turn yellow.

Solution: when the temperature is too high, it should be moved to a cool place with good ventilation for maintenance in time; when the temperature is too low, the room temperature should be adjusted according to the situation in time, and the air conditioner can be turned on if conditions permit.

6. Pollution

If the leaves are contaminated, it will also cause the leaves of Cymbidium to turn yellow. if splashed with dirt, the contaminated places may turn yellow. Solution: we should keep the leaves of Cymbidium clean, find contaminated places, and rinse quickly with clean water.

7. Leaf spot

Suffering from leaf spot disease is also one of the reasons why the leaves of Cymbidium turn yellow. Symptoms: small yellow-brown spots appear on the leaves, and then the color of the spots gradually deepens, and the area of the spots continues to expand, resulting in festering, so that the whole plant will rot away.

Solution: replace the rotten new soil, stop fertilizing and spraying drugs, use 70% of methyl topiramate, trimethoprim, etc., spray every 10 days, continuously spray 3 Mel 4 times, can be cured.

What if the leaves of Cymbidium turn yellow? Prevention and control methods of diseases and insect pests in Cymbidium

What if the leaves of the magnolia turn yellow? Today, let's take a look at the reason why the leaves of Cymbidium turn yellow and how to deal with it.

Magnolia (scientific name: Clivia), alias Lycoris radiata, is an ornamental flower of the genus Lycoris of the family Amaryllidaceae. It is native to southern South Africa. Potted plants are often planted in greenhouses in China for viewing. Ramet or seed reproduction. Also with the same effect is C. nobilis, which is cultivated in greenhouses all over the country. Herbs perennial, with fleshy roots. Basal leaves leathery, numerous, broadly striate, leaf base showing two rows of closely embracing each other into a bulb. Spring and summer flowering, scape erect, flattened, fleshy, terminal umbel, numerous flowers, yellowish red on the outside and yellowish in the lower part of the inner surface. Berries are purplish red.

The yellowing of orchid leaves often occurs in summer, and the yellowing of magnolia leaves greatly affects the ornamental value. If your magnolia has the same symptoms, then take a quick look at the following reasons and ways to deal with them.

The whole leaf turned yellow.

In this case, the sun is so strong that it burns the gentleman orchid. The response is to cut off the yellowed leaves and shade them. After a period of time, the yellowing of Cymbidium leaves will be reduced.

It turns yellow from the end of the leaf.

This situation may be caused by the soil where the orchid is too raw or too fat, which should be dealt with according to the actual situation.

Individual leaves turn yellow.

This situation is most likely caused by the failure of the gentleman's orchid's light. The corresponding measure is to supplement the light, or put it in a sunny position.

The yellow leaves of Cymbidium (including the deterioration of leaf tips) are mostly due to watering, fertilizer and improper use of soil, which first cause rotten roots, and then lead to yellow leaves; therefore, the basin should be checked, the rotten roots should be removed, the soil should be changed, and the yellow leaves should be cut off at the same time, so as to reduce the burden on the plant. The main reasons for rotting roots are:

First, in the case of poor ventilation, a large amount of water will cause rotten roots, because the water poured into the basin can not evaporate for a long time, the metabolic function of the plant will be hindered, which is bound to lead to rotting roots.

Second, excessive application of fertilizer or unfermented fertilizer, when the room temperature rises to more than 25 ℃, it will ferment in the basin to produce high temperature, thus burning the roots; third, with alkaline soil, clayey soil or unrotten horse dung soil to cultivate magnolia, some are not loose, some have poor permeability, and some will produce high temperature in the basin soil, which will also cause rotting roots. .

Ten solutions to the yellowing of the leaves of Cymbidium

1. The leaves of Cymbidium are yellow, and the middle leaves are black and rotten.

Solution: the emergence of this symptom requires the above nine methods to prescribe the right medicine to the case. While the middle small leaves blackened and rotten, we need to make a further judgment, break open the two leaves to check, if the gap between the leaves blackened out of festering juice. It can be judged that the formed gentleman orchid arrow did not have time to grow out of the leaves and rot directly in the middle of the leaves. There are many reasons for flower and arrow rot: one is that too much water is sprayed in the hands of the florist, causing sewage to flow into the crevice and lead to bacterial infection, and the other is due to careless watering that causes sewage to splash into the crevice and cause rot. Consequences: under normal circumstances will not affect the life of the orchid, but if in high temperature and humidity weather, it is very easy to cause wiping head and the whole plant rot. Treatment: toilet paper or facial Jack paper can be used to absorb rotten juice, use appropriate methods to remove dirt that can be cleaned, and usually keep the environment relatively dry, it is recommended to use basin watering method.

two。 All the leaves of Magnolia turn yellow

Solution: all yellow, often the symptoms of fever, the solution: immediately shade, and cut off the yellow leaves.

3. The leaves of Cymbidium are withered and sagging.

Solution: withered or sagging leaves are symptoms of lack of water. Watering should grasp the principle of no dry, no watering, no stagnant water in the basin.

4. The leaves of Cymbidium are partially yellowed.

Solution: local yellowing, it is likely to be fire, cold wind, hot water, acid and alkali erosion. You can rule out external causes in time. Sometimes, the lack of nitrogen fertilizer may cause plants to suffer from chlorosis. The decrease of chlorophyll causes the leaves to turn yellow. In this case, fermented cake fertilizer and water can be added. (the methods of breeding vary with different seasons)

5. The solution of wrinkling and yellow spots on the leaves of Cymbidium: root burning caused by excessive fertilization. Change the soil immediately, soak the roots with 0.1% potassium permanganate solution for 20-30 minutes, rinse with clean water, remove the rotten roots after drying, spread plant ash on the wound, and replant.

6. Two outer leaves of Cymbidium turn yellow (planted for 4 years)

Solution: this is a normal new layer of metabolism, only need to prune the outer 2 leaves.

7. The leaves of Cymbidium appear grayish yellow.

Solution: the reason for the grayish yellow leaves of Cymbidium is mainly due to the strong direct sunlight and the need for shade.

8. The leaves of Cymbidium have yellowing symptoms.

Solution: due to lack of light, if the room is very dark, gentleman orchid will yellowing. Solution: replenish the light with fluorescent lamps.

9. The leaves of Cymbidium are yellow and weak.

Solution: yellow and weak leaves are lack of fertilizer. Thin fertilizer should be applied frequently; the yellowing of leaves is native and impermeable. Rotten leaf soil or pine needle soil should be replaced.

10. Rotting roots caused by yellowing of low leaves

Solution:

Materials: scissors, art knife, chlorothalonil, rooting water, nutritious water, spray bottle.

Method of operation:

①: uproot the magnolia.

②: cut off the old and rotten leaves with a beauty knife.

③: use scissors to cut off rotten roots and old roots.

④: mix the spray bottle with 3:5 water and chlorothalonil.

⑤: move the orchid back to the basin.

⑥: pour with rooting water and nutritious water.

⑦: water about twice a month for 5 months.

⑧: after 5 months, water will be watered about 4 times a month for 2 months.

⑨: return to normal watering times.

⑩: done.

Ways to prevent the leaves of Cymbidium from yellowing:

The yellow leaves of Cymbidium are mainly due to improper management. The yellow leaves of Cymbidium are caused by the following reasons:

The main results are as follows: 1. Excessive watering (yellowing of leaves caused by water): if the pots have accumulated water for too long, the leaves are easy to become infiltrative and yellowing, which occurs at the tip of the tender leaves, and the symptoms develop from top to bottom. That is, the common water yellow is caused by excessive watering, which is characterized by no obvious change in the old leaves and yellowing of the young leaves, which should be controlled immediately.

2. Lack of water (yellowing of leaves caused by drought): if you are too dry, or if you water half a section of water every time, the old leaves will be yellow. Due to water shortage and drought, it is characterized by the yellow of the old leaves from the bottom up. If the water shortage time is a little longer, the whole plant will be yellow, or even die, so it should be watered in time.

3. Hypertrophy (yellowing caused by excessive fertilization): excessive fertilization will cause root burning and yellow tip of leaves. Caused by excessive fertilization or high concentration; characterized by thick, shiny and uneven young leaves; fertilizer, ploughing and watering should be controlled

4. Element deficiency and chlorosis (iron deficiency): if iron is deficient in basin soil, the top of the leaf turns yellow first. If there is a lack of nitrogen, the new leaves are yellowish white.

5. Yellowing caused by lack of nutrients: it is caused by insufficient fertilizer, low fertilization concentration, and long fertilization interval; it is characterized by yellow young leaves and tender stems, and if it is not fertilized in time after seeing this phenomenon, it will also cause yellow leaves and even death of the whole plant; for flowers lacking fertilizer, do not apply a large amount of thick fertilizer at one time, so as not to cause root burning. Due to the great change of soil fertility conditions, the phenomenon of yellow leaves often appears in the greenhouse, which is characterized by obvious young leaves, light old leaves, yellow mesophyll, green veins and 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.

6. Sunburn: after strong direct sunlight (summer), macula occurs in the leaves, which is called sunburn. When dried at high temperature (more than 30 ℃), the leaves are also easy to yellowing.

7. Pollution: the leaves of Cymbidium should be kept clean. If splashed with dirt, the contaminated place may turn yellow.

8. Freezing injury: the freezing injury occurs when the orchid is below 0 ℃, and the symptom is still yellow leaf. In order to restore the normal growth of Cymbidium after yellow leaves, it is necessary to find out the source of the disease and take corresponding measures. The method is: dig out the whole orchid to check the root, such as the rotten root, remove the rotten part, change the new soil and re-cultivate it, and put a layer of fine sand under the root. Loose rotten leaf soil should be used in basin soil, and the pH (pH) should be neutral. The soil is not dry or wet and has good ventilation. Gentleman orchid likes weak light, except in winter, summer should be placed in a half-yin and half-yang place, avoid the direct sun. If the occurrence of "green deficiency" can add liquid fertilizer (such as black alum fertilizer water), the key point is less and more times, be careful not to splash the fertilizer or mud on the leaf, if splashed on the leaf, rinse it off with clean water in time. When applying solid fertilizer, it is better to avoid direct contact with fleshy roots.

Treatment of yellowing of leaves of Cymbidium

1. Can the yellow leaves of Cymbidium be pruned. ?

The key is to figure out why there are yellow leaves.

The general reasons for yellow leaves are:

① should be kept in a semi-shady place, and the leaves will become sunburned and turn yellow when the sun is strong.

② gentleman orchid for the fleshy root basin to keep a little damp can, too much water to hurt the root leaves will turn yellow.

The leaves of ③ are yellow when they are deficient in fertilizer, and orchids can apply dilute nitrogen fertilizer once every half a month, and do not apply fertilizer in summer to avoid root damage. The yellow leaves of the orchid can be trimmed, the scissors can be roasted on the fire and sterilized, and then the yellow leaves can be cut off, but not torn.

two。 The solution to the yellowing of Cymbidium leaves in spring:

The gentleman orchid spent the winter, and the leaves turned yellow and withered. Will you still live in spring?

Should be able, turn the basin, remove dead leaves, hollow root removal, with gentleman orchid special soil, mixed with a large piece of orchid stone, soil: blue stone = 3:2. Pour water once after turning the basin, put it in the astigmatism ventilation place to slow the seedling for 1 month, then use a week to gradually see the light, normal maintenance can be. Do not expose yourself to the sun.

3. The solution to the yellowing of Cymbidium leaves in summer:

To see if it is usually too much watering, too much easily rotten roots, rotten leaves and rotten stamens, and should be poured in the basin soil, not on the leaves, especially on the central leaves. If the basin soil is often too wet, it will cause the water to flow back, and then, as you said, it will gradually blacken and rot from the tip of the leaf, so the basin soil should be on the dry side. In addition, the temperature is higher in summer, if the temperature of its growth environment drops below 25 degrees, rarefied liquid fertilizer above 1:20 can also be applied in summer, once every semimonthly. This can promote the growth of Magnolia, so that it can shorten the dormancy period or not dormancy. There is another situation: the light is too strong. Gentleman orchid is soft and light, if the strong light, the leaves will become rough, the leaves will become yellow and dark, lose emerald green, but also easy to cause "sunburn". =

Conclusion: breeding magnolia is a thing that must be constantly summarized to find problems, to careful observation, careful care, in order to grow a gentleman orchid with ornamental value. Finally, I wish the orchid planted by your friends grow healthily.

Common diseases of Cymbidium

Disease diagnosis and treatment of Cymbidium due to unsuitable cultivation conditions, it often causes the invasion of bacteria and diseases, which will affect its ornamental value and cause plant death. Therefore, it is very necessary to diagnose the diseases of Cymbidium in early stage and take control measures in time. The main results are as follows: 1. Leaf Fusarium wilt occurs at the tip of tender leaves, and the symptoms develop from top to bottom. In severe cases, the whole leaf turns yellow and wilts. This disease is caused by root neck rot, also known as root rot, which is caused by a fungus that invades the root. It is mainly a physiological disease caused by excessive fertilization or excessive watering of the rhizosphere (root neck) and the cortex and phloem of the stem on the nearby ground. If it is hypertrophy, it is necessary to change the basin soil, under the root pad a layer of fine sand, basin soil is appropriate to use loose rotten leaf soil, pH to neutral is appropriate. If the water is large, it is necessary to control the amount of water, and remove the yellow leaves, the plant can still return to normal growth. 2, leaf spot disease: is the occurrence of small yellow spots on the leaves, the disease spot increases, the diameter can reach about 3-5 mm, round; the disease spot spread into one, the leaves will wither and yellow. Another kind is on the leaf disease spot is big, the shape is irregular, the yellow brown to the beige, has the wheel pattern slightly, the later stage disease spot back appears the black dot. The above two diseases are due to poor ventilation and parasitism of shell insects, resulting in the weakening of plant growth. The method of prevention and treatment is: smear the disease spot with 0.5% potassium permanganate solution, or spray with 1000 times solution of more than 50% carbendazim; if the disease is serious, the damaged leaves should be removed, burned, and dried with aseptic skimmed cotton at the wound. 3. Bacterial rot: bacteria invade due to mechanical damage or damage by shell worms. In order to harm the leaf sheath and leaf center, the rot should be removed, the wound should be dried with skimmed cotton, and then smeared with 0.02% streptomycin.

Rotten root treatment

When the orchid is in the ramet, the wound is not disinfected and infected by bacteria, or too much watering in the cultivation process, poor soil permeability, excessive fertilization, application of immature raw fertilizer and so on are the common causes of rotten roots. If the root of a large adult orchid is rotten, it will show that a certain leaf is dry-pointed, blackened, scorched and shedding. Find out the cause, add to overcome, and stop the continued occurrence of rotten roots. When the root is much rotten, most of the leaves will fall off, leaving only the central ligule. When it is serious, the plant is unstable, gently touch it with your hand, and shake it. When you take off the basin at this time, you can see that some of its fleshy roots are completely rotten, and some are half rotten. The rotten root leaves only a withered membranous skin, which is soft and rotten no matter how long it takes. When you find this situation, you should shake off all the soil and rinse the roots with clean water. Carefully remove the rotten roots and cut off the rotten parts with clean scissors. Then soak the root in 0.1% potassium permanganate solution for disinfection, put forward the root after 5 minutes, rinse with clean water to remove the disinfectant, dip in a small amount of sulfur powder or plant ash, put it indoors to dry the surface and then plant it in a pot again. When going up the pot, you should plant it shallowly, bury the stem plate, and the false bulb should be exposed to the soil, which is beneficial to the root. After watering once, keep it in a semi-shaded place. In the future, spray or add plastic film cover, try to make the air humidity higher, less watering. When the temperature was maintained at about 20 ℃, the growth of lobule was seen. At this time, the new root has been issued and can be transferred to normal water and fertilizer management. Young plants, the roots are rarely very delicate, such as rotten roots, soon all the roots will rot, the leaves are drooping. When these conditions occur, the plant should be removed from the pot in time, and the residue on the unrotten stem plate should be cleaned, washed, disinfected, and dried on the surface, and then inserted into the plain sandy soil according to the method of cutting. Under the environmental condition of 20-25 ℃, shading, keeping high air humidity and moist cutting soil, let it send out new roots, wait for the leaves to recover, and use rotten leaf soil to pot again in time. Several common diseases of the common virus, such as white silk disease, soft rot, anthrax and so on. When the disease occurred, the stem near the root appeared water-stained brown irregular spots and soft cortical rot, followed by white silk mycelium spreading in the rhizosphere soil surface, forming a small sclerotia in the later stage, and finally colored rapeseed shape, expanding to the whole base of rot and necrosis. Prevention and control methods: 1. Before putting on the basin, the cultivated soil should be disinfected. A relatively simple method is to put the culture soil at a temperature of 60 ℃ for 24 hours. 2, often pay attention to the soil surface, and find that the white bacteria line is picked out and burned, and some lime powder is disinfected around the disease; 3. In the early stage of the disease, 50% carbendazim wettable powder was irrigated on the base of the plant stem and the soil around the base, once a week, 2-3 times. Soft rot pathogens often invade from the wound. When the disease occurs, light yellow watery spots appear on the leaves, and then expand into regular disease spots, so that the leaves become brown soft rot ingredients, and there is an outflow of bacterial fluid from the wound. Prevention and treatment methods: 1. Once the disease is found, the diseased plant should be separated, the culture soil around the plant should be removed immediately, the diseased part should be exposed, the rotten leaves should be broken, the rotten part should be scraped off with a disinfection knife, and the sun should be irradiated properly. Keep ventilated and dry 2. If there are many rotten plants, the diseased tissue should be completely removed, soaked in 5% potassium permanganate aqueous solution for 1 hour, rinsed with clean water to dry, and smeared with plant ash at the cut. Another new pot planting, placed in the low temperature of ventilation 3, drug treatment can be penicillin or streptomycin or oxytetracycline plus 4000 murine solution spray or smear disease spots, have a certain effect. Anthrax mostly occurs in rainy, humid and muggy season, and the disease occurs at the tip and edge of the leaf. At the initial stage, the leaves appeared moist brown spots, and then expanded into an oval and the same wave of the main disease spot, surrounded by yellow, and gradually shrunk and withered in the later stage. The basin soil is too wet and excessive nitrogen fertilizer is easy to cause the disease. Prevention and control methods: 1, give flowerpots with good ventilation and lighting environment, pot soil should only be moist, should not be watered too much too dense. Increase phosphorus and potassium fertilizer and control nitrogen fertilizer. 2. When you find a sign of illness, you should immediately use 50% wettable carbendazim powder plus 800x water to make a solution, or spray with 1000 times water solution of anthrax Fumeijia, spray once in about 6 days, spray 3-5 times will be effective. [5] the common pests of Cymbidium are shell insects. When insect pests occur, shell insects often gather on the tender shoots of leaves, absorb leaf sap, secrete a large number of bacteria, turn stems and leaves into mildew and black, cause soot disease and wither leaves. This insect has strong fecundity and can occur for many generations a year. A female adult can often reproduce hundreds of them, which can cause death if no timely control measures are taken. Prevention and treatment: prevention should be given priority to. Usually, we should always pay attention to check the plant, find insect pests, control as soon as possible, in order to prevent spread. In addition to the control of shell insects, both artificial and medicine can be used at the same time. If only one or two leaf tips find pests, they can be manually scraped, sharpened with thin sticks or removed with bamboo cuttings. If there are a large number of nymphs, 25% imidophos emulsion can be sprayed without 1000 times liquid, or 40% omethoate emulsion can be sprayed with 1000-1500 times water solution. Generally, it can be killed by spraying 1-2 times. In addition, it should be noted that earthworms can also become pests of magnolia. In the young period of the orchid plant, its fleshy root is very weak. If there are earthworms in the basin soil, it will often drill everywhere, injuring the tender root, destroying the function of absorbing nutrition, stopping the growth and development of the plant or causing rotten root. The method of prevention and control is to always pay attention to whether there are round soil particles (that is, earthworm excrement) on the surface of the basin soil. If found, you can immediately irrigate it with 50% dichlorvos emulsion and 1500-2000 times water. If there are earthworms drilled after irrigation, remove them immediately; do the same again every other week, and then get rid of the earthworms.

History of cultivation of Cymbidium

In 1823, the Englishman James James Bowie discovered the laughing gentleman orchid in the Eastern Cape of South Africa and cultivated it in a private garden in Clive, Northumberland, northern England. In the 1820s, Magnolia began to be cultivated in Germany, Denmark, Belgium and other European countries, and spread to Japan in 1854. Magnolia is the city flower of Changchun City, Jilin Province, China. In 1932, Magnolia was introduced into Changchun, China from Japan, and was only cultivated in Manchukuo court and imperial garden. After Japan's defeat in 1945, magnolia flowed from the court to folk cultivation.

In recent years, China has cultivated more than 160 valuable varieties of magnolia, which are common flower varieties in common families. The florescence lasts from March to April. Sexual preference for warm and humid and semi-shady environment, not cold-resistant, loam requires good drainage, there are ramet and sowing two propagation methods. Ramets were carried out from March to April, more topdressing was applied during the growing period, hot and rainy summer, and generally did not apply fertilizer. Magnolia has a long flowering period and evergreen leaves, which is most suitable for indoor potted ornamental plants.

Main varieties

Big flower gentleman orchid Clivia miniata Regel smiles gentleman orchid Clivia nobilis Lindl. Fine leaf gentleman orchid Clivia gardenii Hook has stem gentleman orchid Clivia caulescens R.A.Dyerin gold silk gentleman orchid white flower gentleman orchid

How to do the long spots of Cymbidium, spraying chemicals to change the basin soil / reasonable fertilization is the key.

The role of gentleman orchid, people who have raised should have a deep experience, its thick green leaves are very ornamental, but also have a good role of fengshui, very suitable for keeping indoors. However, in the process of breeding, for some reasons, the leaves of the plant will be spotted, so what about the speckles of Cymbidium? In this regard, the editor summed up the causes of five kinds of leaf spots, let's go and have a look.

First, the gentleman orchid long spot how to do, look for the cause

As a valuable flower, magnolia is generally decorated in the living room, study and other places for people to appreciate. But in the process of breeding, yellow or brown dots will appear on the leaves of some flower friends, then fester gradually, and finally the leaves or the whole plant will rot away. So what about the long spots of the magnolia? The editor will solve the problems from the aspects of water and fertilizer, light, soil and so on.

Second, the reasons for the long spots of Cymbidium.

1. Too much watering

Generally speaking, there are many reasons for the long spots of gentleman orchids. First of all, you can check the flowerpots to see if they are overwatered. Because once too much watering, the basin soil appears stagnant water, it is easy to lead to the rotten root of the gentleman orchid, the performance above is the leaf long spot. At this point, you can consider changing the soil.

2. Improper lighting

Gentleman orchid like light, but avoid strong light direct light, once the plant is directly illuminated by light for a long time, or can not receive light for a long time, there will be long leaf spots. At this time, everyone will put the potted flowers in the setting sun.

3. Excessive fertilization

In the growth process of Cymbidium, proper fertilization can make the plant grow better, but if there is too much fertilizer, it will lead to spots. In this case, we also need to change the soil for it.

4. Imbalance of nitrogen, phosphorus and potassium

It is not good to apply too much fertilizer, and it is not good to apply too little fertilizer. Once nitrogen, phosphorus and potassium are out of balance, especially less potash fertilizer, or when fertilizing, the fertilizer directly touches the root, individual leaves will also grow spots.

5. Improper change of soil

In addition to the above points, the reason for the long spots of Cymbidium may also be caused by improper soil change. If the basin soil is not changed for a long time, the nutrients in the basin soil are reduced, and there are pathogenic bacteria in the basin soil. at this time, once the plant has a wound, it is easy to be infected with bacteria, resulting in long spots on the leaves; in addition, the replacement of the new soil is inappropriate, contains germs, or the soil is relatively green. It can also cause long leaf spots.

Third, the solution to the long spot of Cymbidium.

1. Pruning

Knowing the reason why the gentleman orchid has long spots, the next step is to solve it. First of all, we have to cut off the sick old leaves and leave the young leaves in the middle, because the diseased leaves not only affect the growth of other healthy leaves, but also affect the beauty of the whole plant.

2. Change the soil

If you want to solve the problem of long spots on the leaves of Cymbidium, you can use the method of changing soil to solve the problem. When changing the soil, wash the fleshy root with clean water, dry it and then serve it in the basin. If some leaves are rotten badly, just cut them off.

3. Spraying

If the disease is caused by long leaf spots, you can spray 500-1000 times the liquid, once every half a month, spray 3 times 4 times in a row will be effective. However, the bacteria are unique to toxicity, so we should pay attention to safety when using them.