What to do when Cymbidium ensifolium leaves turn yellow or it suffers from pests and diseases? Growing methods and precautions

 Cymbidium ensifolium is now fairly common in households and is a potted plant very suitable for home growing, but why do the Cymbidium ensifolium you grow yourself develop yellow leaves, and once yellow, eventually die? Could it be that your growing method is wrong? In the process of growing Cymbidium ensifolium, what precautions should be noted? Oh right, Cymbidium ensifolium also gets bugs, so how do you deal with that? Let's take a look together with Women's Network:

Growing methods for Cymbidium ensifolium:

1. Soil: Cymbidium ensifolium has a well-developed, thick root system and has relatively high requirements for soil aeration. You can use peat soil, leaf mold, grass peat soil, fermented peanut shells, fermented sawdust, fermented raw wood shavings, decomposed tree bark, etc.

2. Watering: For potted Cymbidium ensifolium, keep the soil moist, but do not water too much. Never let water accumulate at the roots. In summer, spray water on the leaves more often.

3. Sunlight: Cymbidium ensifolium is an orchid species that relatively likes sufficient light. In daily care, it can be placed in the uppermost, easy-to-light spot on the orchid shelf in the orchid room, and shaded as little as possible, otherwise it is not easy to produce flowers. Some Cymbidium ensifolium varieties even need full exposure in daily care in order to bloom.

4. Temperature: Cymbidium ensifolium has poor cold tolerance, and the overwintering temperature should not be lower than 3°C, otherwise freezing damage occurs. It grows vigorously and blooms and fruits between 20°~28°. Under suitable temperature and humidity, most varieties can bloom twice a year, and some varieties can bloom four times. It is not tolerant of high temperatures above 32°, and below 0° it suffers frostbite, and the plant turns black and dies.

5. Fertilizing: During care of Cymbidium ensifolium, follow the principle of applying thin fertilizer frequently, and fertilize relatively often, so that Cymbidium ensifolium grows robustly and blooms properly.

6. Pests: In hot seasons, Cymbidium ensifolium is most prone to thrips and aphids damaging flower buds and flowers, causing flower buds not to grow, to turn brown, and to wither and die, and the flowers to be eaten beyond recognition, seriously affecting ornamental value. Therefore, from bud formation to full bloom, Cymbidium ensifolium should focus on prevention, combine prevention with control, and spray pesticides in time to prevent pest damage.

Precautions for growing Cymbidium ensifolium:

Cymbidium ensifolium refers to the Chinese ground-rooting orchid whose main flowering form appears in midsummer and golden autumn. The botanical community named it after its main producing area, Fujian. It likes a warm, humid and semi-shady environment, has poor cold tolerance, and the overwintering temperature should not be lower than 3°C. It is afraid of direct strong light, is not tolerant of waterlogging or drought, and is suitable for loose, fertile and well-drained leaf mold.

What to do when Cymbidium ensifolium leaves turn yellow?

1. Unsuitable soil

Cymbidium ensifolium has a well-developed, thick root system and has relatively high requirements for soil aeration. If sticky soil that does not match the habits of Cymbidium ensifolium is used to plant it, it will affect the root system, and the leaves will turn yellow and wilt.

2. Too little light

Cymbidium ensifolium is an orchid species that relatively likes sufficient light. If there is insufficient light during care, it will not only bloom less, but also cause the leaves to turn yellow and lose vitality.

3. Fertilizer too concentrated

For Cymbidium ensifolium to bloom abundantly, it needs frequent fertilizing to provide nutrients, but fertilizer that is too concentrated will burn the root system and cause Cymbidium ensifolium leaves to turn yellow and wither.

4. Root rot infection

Root rot infecting Cymbidium ensifolium will cause the root system to rot, poor growth of the aboveground leaves, loss of green leaf color and yellowing, and even cause the plant to wilt. Disease infection is also one of the reasons for yellowing leaves in Cymbidium ensifolium.

5. Scale insect damage

Scale insects mainly harm the leaves and branches of Cymbidium ensifolium, causing the leaves to turn yellow and the branches to wither. If you find that Cymbidium ensifolium leaves are turning yellow, check whether scale insects are the cause.

Solutions for yellowing leaves of Cymbidium ensifolium:

1. Solution for unsuitable soil: When growing, choose loose, fertile and well-drained leaf mold, which is best.

2. Solution for too little light: In daily care, it can be placed in the uppermost, easy-to-light spot on the orchid shelf in the orchid room, and shaded as little as possible.

3. Solution for fertilizer too concentrated: Fertilizing Cymbidium ensifolium should adhere to the principle of thin fertilizer applied frequently, so that Cymbidium ensifolium grows robustly and blooms more.

4. Solution for root rot infection: Soak the diseased Cymbidium ensifolium plant in the medicinal solution for 20 to 30 minutes, take it out and let it dry, then replant it with new substrate.

5. Solution for scale insect damage: Scale insects can be sprayed and killed with 40% omethoate 1000-fold solution, or 50% malathion 1500-fold solution, or 255 imidacloprid... 1000-fold solution, or 50% dichlorvos 1000-fold solution, or 2.5% deltamethrin 3000-fold solution.

What common pests and diseases does Cymbidium ensifolium have, and how to solve them:

1. Cymbidium ensifolium anthracnose

Anthracnose occurs all year round, and is especially rampant in hot and rainy seasons. Anthracnose will damage the branches and leaves of Cymbidium ensifolium, and in severe cases the whole plant dies.

Solution: During the onset period, first spray with 50% thiophanate-methyl wettable powder 800-1500-fold solution, once every 7-10 days, then supplement with 1% equal-strength Bordeaux mixture, once every half month.

2. Cymbidium ensifolium root rot

Root rot is also called nematode disease. Nematodes parasitize the roots of orchids, causing root rot, poor growth of aboveground leaves, loss of green leaf color and yellowing, and even causing the plant to wilt. Nematode damage causes a large number of wounds and also causes infection by other soil-borne pathogens, leading to plant disease and accelerating plant death.

Solution: The cultivation substrate of Cymbidium ensifolium should be disinfected. It can be sterilized with 100-degree steam to kill insect eggs. Severely damaged Cymbidium ensifolium needs to be repotted immediately. Soak the diseased plant in the medicinal solution for 20 to 30 minutes, take it out and let it dry, then replant it with new substrate.

3. Cymbidium ensifolium southern blight

Southern blight mostly occurs in the plum rain season and mainly harms the rhizome part of Cymbidium ensifolium, causing rot and death.

Solution: Pay attention to ventilation and light transmission, and good drainage of the pot soil for prevention. After onset, remove the infected pot soil, and sprinkle pentachloronitrobenzene powder or lime on it.

4. Scale insects

Under conditions of high temperature, high humidity and poor air circulation, they reproduce fastest, harm the leaves and branches of Cymbidium ensifolium, cause leaves to turn yellow and branches to wither.

Solution: Use 40% omethoate 1000-fold solution, or 50% malathion 1500-fold solution, or 255 imidacloprid... 1000-fold solution, or 50% dichlorvos 1000-fold solution, or 2.5% deltamethrin 3000-fold solution, and spray.

These are the problems you may encounter in the process of growing Cymbidium ensifolium. After reading this article, you will know the correct methods for growing Cymbidium ensifolium.

Reasons for yellowing leaves of Cymbidium ensifolium and what to do about it

Cymbidium ensifolium is one of the very popular home-grown flowers. If the Cymbidium ensifolium you grow shows yellowing leaves, you might as well quickly take a look at the reasons for yellowing leaves of Cymbidium ensifolium and the solutions for yellowing leaves of Cymbidium ensifolium!

Reasons for yellowing leaves of Cymbidium ensifolium:

Unsuitable soil

Cymbidium ensifolium has fleshy roots and a well-developed, thick root system, so it has relatively high requirements for soil permeability. If planted in relatively sticky soil, it will affect root growth and interrupt the nutrient transport channel between the roots and leaves.

Improper light

Cymbidium ensifolium is an orchid variety that relatively likes light. If it is kept in a shady place for a long time, the plant will have reduced chlorophyll due to lack of photosynthesis, and the leaf color will turn yellow; if it is exposed to the sun for a long time, the light will be too strong, the plant will be easily burned, and the leaves will also lose vitality.

Improper fertilizing

Too much nitrogen fertilizer: everyone knows that nitrogen fertilizer can promote leaf growth, but the roots of Cymbidium ensifolium have root nodules and have a certain ability to aggregate nitrogen elements. If the fertilizer applied during a certain period has a relatively high nitrogen content, it will cause fertilizer damage and yellow leaves.

Pest and disease interference

Root rot is one of the reasons for yellowing leaves. If the rhizome rots, the aboveground leaves will inevitably grow poorly, turn yellow, or even wither.

In addition, scale insect damage can also cause leaves to turn yellow. When branches are covered with insects, photosynthesis of the plant is affected, and the branches slowly wither.

What to do when Cymbidium ensifolium leaves turn yellow:

Change the soil, provide suitable light

If unsuitable soil is found, change the soil immediately. You can choose professional orchid growing soil, which is relatively suitable in both permeability and pH. Try not to use soil dug directly from outside, because such soil is generally not very breathable.

In daily care, place the orchid pot in a bright place. In spring and winter, it can receive all-day sunlight without shading. In summer and autumn, avoid the midday sun and provide appropriate shading.

Apply thin fertilizer frequently

What orchids fear most is heavy fertilizer. Flower lovers who do not know how to fertilize must study well. Fertilize in time when it should be done. Whether fertilizing is done correctly or not affects the growth of Cymbidium ensifolium. Persist in applying thin fertilizer frequently and do not be lazy, so that Cymbidium ensifolium can grow robustly.

Prevent and control pests and diseases

If the plant is found to be infected with pests or diseases, deal with it in time. When roots rot, take the plant out of the pot, clean up the rotted parts, soak it in disinfectant... for 20-30 minutes, let it dry, and replant it.

If scale insects appear on the leaves, spray pesticide in time. Omethoate 1000-fold solution can be used.

What to do when Cymbidium ensifolium leaves turn yellow: change soil in time / pay attention to fertilizing methods

Cymbidium ensifolium is a plant grown in major gardens across our country and has extremely high ornamental value. But no matter how high the ornamental value is, if yellow flowers appear, it will affect its overall beauty, because it will look very abrupt. As for what to do when Cymbidium ensifolium leaves turn yellow? In fact, it is relatively easy to solve once you find the right method. Let's look at the specific methods below.

1. What to do when Cymbidium ensifolium leaves turn yellow / pay attention to fertilizing methods
 

When Cymbidium ensifolium leaves turn yellow, we must first find the cause, because only by finding the cause can we handle it in a more targeted way. There are many reasons for yellowing leaves of Cymbidium ensifolium. Fertilizing, incorrect methods of absorbing sunlight, and the appearance of pests and diseases may all cause this problem. If it is caused by pests and diseases, everyone can refer to the article on pest and disease control of Cymbidium ensifolium, which has detailed solutions. Here the editor will not introduce too much.

2. Reasons for yellowing leaves of Cymbidium ensifolium

1. Wrong soil choice

Choosing soil is the first step in planting Cymbidium ensifolium, and it is also a very important step, with many points to note. When choosing soil, it is best not to choose soil that is too sticky, because if it is planted in this kind of soil, it may have difficulty absorbing nutrients and develop yellow leaves.

Solution: When choosing soil before planting Cymbidium ensifolium, it is best to choose relatively loose soil, such as a mixed soil of humus soil, coarse sand and garden soil, which is very good. This can make the soil drain better and make it easier for Cymbidium ensifolium to absorb nutrients.

2. Too much or too little sunlight

When growing Cymbidium ensifolium, sunlight is a very important point. If it is placed in a place with direct sunlight, it is very easy to burn, which makes the leaves lose vitality and turn yellow. Of course, if it is placed indoors where it cannot see sunlight for a long time, Cymbidium ensifolium will be unable to carry out photosynthesis, lack nutrients, and gradually turn yellow.

Solution: This plant, Cymbidium ensifolium, does not like direct sunlight, especially in summer when sunlight is strong. It is best to move Cymbidium ensifolium to a semi-shady place indoors for growing. The environment must be ventilated, so that direct sunlight can be avoided and the nutrients in sunlight can still be absorbed.

3. Wrong fertilizing method

Wrong fertilizing methods or choosing the wrong fertilizer can both cause yellowing leaves of Cymbidium ensifolium. In the fertilizing process, the fertilizing method is key. Once the right method is found, it is relatively simple to handle.

Solution: During the growth of Cymbidium ensifolium, there are three fertilizations that are very important and absolutely indispensable. They are the bud promotion period, the germination period, and before the flowering period. During the bud promotion period, granular fertilizer can be chosen for application outside the roots. During the germination period, choose nitrogen fertilizer for once-a-week fertilizing. Before the flowering period, choose phosphorus fertilizer for once-a-week application outside the roots.

As for what to do when Cymbidium ensifolium leaves turn yellow, friends who have read the above should all know how to solve this problem. As said before, as long as you find the cause of the yellowing, it is still relatively simple to handle. In any case, I still hope this article can bring everyone some help.