How is the leaf of Dendrobium candidum yellow to return a responsibility? Introduction of reasons and solutions

Dendrobium candidum has high medicinal value, and there are many people who develop the cultivation of Dendrobium candidum. I believe that many bases for planting Dendrobium candidum have encountered such problems. When Dendrobium candidum is planted, the leaves turn yellow and some are dry. Do you know why? Do you know what to do with it? Let's take a look at it together.

Matrix discomfort

[reason] the aerial roots of Dendrobium candidum are exposed in the air, absorbing air and Rain Water.

[methods] the first choice of matrix materials is bark, followed by sawdust, which need to be crushed, sterilized and fermented, usually mixed with several materials and substrates of different thickness.

The matrix is too wet

[reason] too much watering causes the substrate to be too wet and the roots to rot.

[methods] potted Dendrobium candidum needs to be watered every other week or two weeks. after watering thoroughly, it is usually sprayed, and it is necessary to control the air circulation on the balcony. The stem and rhizome of Dendrobium candidum are not dead, so they can germinate again after spring, but watering should be controlled to prevent rotting roots.

Lack of water and drought

Lack of water leads to yellow leaves. Some growers control too much water, coupled with the current relatively low humidity, which leads to the occurrence of yellow leaves. Although it is winter now, water control should not be excessive, especially Dendrobium candidum planted in bed. The phenomenon of yellow leaves caused by lack of water is more common in winter.

[method] watering is suitable for slightly acidic to neutral water, and there will be too much calcium, magnesium and other minerals in bogey water. Sufficient water is required in spring, summer and early autumn, and gradually enter a dormant state after the Mid-Autumn Festival, and the amount of watering should be reduced until watering is completely stopped. But before the leaves turn yellow, they begin to reduce watering, further decrease with the yellowing and shedding of the leaves, and stop watering when the leaves fall out. In North China, it is necessary to maintain a high indoor air humidity after the water is cut off to avoid pseudo-bulb drying and shrinking. If the room is too dry, the basin can be watered every 1 to 2 weeks.

There are too many miscellaneous bacteria.

[reason] there are too many miscellaneous bacteria in the substrate, and the lack of competitiveness of symbiotic bacteria in the root system leads to the yellowing of leaves.

[methods] fermented bark or sawdust, coconut shell, bagasse, rotten fallen leaves or moss should be fully dried in the sun and treated with caprylic acid to kill the remaining pests and eggs in the soil.

The light is too strong.

[reason] the growing environment of Dendrobium candidum needs to be controlled in a humid and semi-shady place. if the sun is too strong, it will make Dendrobium feel dry, which is not conducive to its air root absorption, so it is very important to control its planting environment.

[methods] sufficient light, spring, summer and autumn, shading amount is controlled between 30% and 50%, sufficient light can form a large number of flower buds.

The temperature is too high

[reason] the leaves of Dendrobium candidum were yellowed due to high planting temperature and overheating.

[methods] Dendrobium does not like too high temperature in summer. It often stops growing in hot summer and should be placed in a well-ventilated place. After the flower bud grows, the greenhouse temperature of 20 ℃ to 25 ℃ during the day and 15 ℃ at night should be kept, not too high or too low, otherwise it is easy to cause the bud to fall off.

Lack of potash fertilizer

[reason] the leaves of Dendrobium candidum start yellowing from the tip of the leaves, and then the whole piece of Dendrobium starts yellowing and then falls off, which may be due to the lack of potassium, which makes the leaves yellowing at first, and then the whole piece falls off.

[methods] Potash fertilizer was sprayed.

Physiological yellow

[reason] in winter, it is normal for old plants (mature plants grown from last year's autumn buds or this year's spring buds) to appear yellow leaves in the middle and lower parts, so don't worry.

[method] Don't worry about it.

What are the reasons for the yellowing of orchid leaves?

Many people in the breeding of hanging orchids, there will be symptoms of yellow leaves, and hanging orchids appear this symptom, how is caused? The author introduces the habits of Cymbidium and the reason why the leaves are yellowing for users. If the hanging orchid in your home also appears this symptom, that is just right, let's take a look!

Growth habits of Cymbidium

Magnolia also known as and hanging orchid, bluegrass, folding crane orchid, etc., the plant originally grew with South Africa. It is a comfortable and perennial herb with slender leaves, like orchids, with green or stripes in the middle, followed by a flower diameter drawn from the leaves and stolons at the top of the leaves. The flowers are white, and it is often seen that 4 flowers grow together. Of course, some flowers are purple. Each plant has about three to five seeds, flowering in May and fruiting in August. Secondly, planting Cymbidium also has the effect of purifying air, and the plant can also be used as medicine.

The reason for the yellowing of the leaves of Cymbidium

When raising Cymbidium, it is necessary to understand the nature of the plant, that is, Cymbidium likes warm and humid places, and its adaptability is also very strong, and its drought resistance is also very good, and no matter what kind of soil it is, it can be cultured successfully. Secondly, it is very good to grow in a good drainage and loose and fertile sandy soil, and the reasons for the yellowing of leaves can be divided into the following: 1 excessive fertilization exceeds the growth needs of Cymbidium (2) the potted soil has not been changed for a long time; (3) the light is insufficient; (4) the air permeability and drainage in the soil are not good.

The solution to the yellowing of Cymbidium leaves

The above is the reason for the yellowing of the leaves arranged by the editor for you, and the solution is also very simple. Of course, in the process of breeding, you should also pay attention to which reason the leaves of the plant are yellowing. 1 should immediately stop applying fertilizer, and irrigate more water, or clean the fertilizer at the root and replace the new soil. 2 the new soil has not been replaced for a long time, and the elements in the soil are exhausted, so the plants will lack nutrients and the leaves will turn yellow, so users should immediately change the soil and fertilize. 3 in the process of breeding Cymbidium, it is necessary to ensure that the plant can see the eye sunlight for more than 4 hours at the earliest, increase the green leaves of the leaves, and pay attention to avoid the exposure of strong light. (4) it is necessary to ensure that the potted plants have the same water quality and good air permeability in the soil.

Editor reminded: I believe that after reading the above, users should understand the reasons for the yellowing of hanging orchid leaves and the solution! In the process of breeding, the first is to understand the habits of plants, and the second is to make timely deployment according to conditions. Of course, it can also avoid the yellowing of leaves.

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The culture methods and matters needing attention of rich bamboo how to raise rich bamboo in winter? Culture methods and matters needing attention of Fugui Bamboo

As the modeling material of bonsai, rich bamboo can form special shapes such as pagoda, curved bamboo, stem vase and so on. when the Spring Festival is approaching, you can also tie Chinese knots, red ropes, wealth cats and other lucky ornaments to the bamboo pole. it is even more obvious that the rich bamboo has a far-reaching meaning of peace. So, how to raise rich bamboo in winter?

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How to raise rich bamboo in winter? Culture methods and points for attention of Fugui bamboo-

[plant archives]-

English name: Fugui bamboo

Scientific name: Dracaena sanderiana

Aliases: bamboo banana, evergreen bamboo, Xin's dragon tree

Family: Ruscaceae of Pseudophyllaceae

Genus: Dracaena

Distribution of origin: it originated from Cameroon and Congo in western Africa and was introduced into China in the late 1980s.

Morphological characteristics: perennial evergreen herbs, slender plants, erect upper branches. Leaves alternate or subopposite, long lanceolate, with obvious 3-7 main veins, short stalked, dark green. Umbels have 3-10 flowers in leaf axils or opposite flowers to upper leaves.

How to raise rich bamboo in winter? -

The suitable temperature for the growth of Phyllostachys pubescens is 22-25 ℃. During the overwintering period, the room temperature should be above 10 ℃. If the temperature is less than 13 ℃, the bamboo will go into dormancy and stop growing. And when the temperature is too low, the water absorption of rich bamboo roots weakens, resulting in yellowish-brown patches on the tip and edge of leaves, that is, the yellowing of leaves. So in winter to prevent frostbite, especially in the northern areas, do not put rich bamboo outdoors, and stop fertilization, control watering, can survive the winter safely. In addition, if the rich bamboo is cultivated in water, it is necessary to avoid water freezing and frostbite on the roots.

Culture methods and points for attention of Fugui bamboo-

Rich bamboo is the growing season in northern China from April to October. The basin soil should be kept moist and humic acid liquid fertilizer should be applied once a month. Excessive light in summer will make the leaves yellow, outdoor maintenance of rich bamboo needs shade, put in the north balcony is better. Sprinkle water to the ground and leaves 1-2 times a day when the climate is dry. From November to March, it was moved into the room for maintenance and placed in the sunlit place in front of the south window. It could grow slowly when it was kept above 10 ℃. Change the basin and soil from March to April, and the culture soil can be made of peat soil and 50% garden soil. The basin bottom is padded with 2-3 cm thick ceramsite or coarse gravel as drainage layer, and then add culture soil. Keep the rich bamboo pot soil slightly wet after planting, and normal water and fertilizer management can be carried out after the new buds are issued. After about two years of cultivation, the plant should be cut off and replanted, the plant can be cut off with 5-6 nodes, and the cut-off part can be cut or raised in water.

The bundled "lucky" rich bamboo is raised in water and placed in a bright place indoors. When the temperature is low, the water is changed every 7-10 days, and the water is changed every 3-5 days during the spring and autumn growing season. All-element compound fertilizer is added to the water to provide nutrition. In order to avoid rotting roots or breeding algae, it is best to use cold boiled water during the high temperature period in summer.

It should be noted that: do not put the rich bamboo next to the TV set or where the air conditioner is often blown, otherwise the leaf tip and leaf edge will dry up; the rich bamboo purchased in the north is better in spring and enters a suitable growth period after buying it back; rich bamboo grows poorly in alkaline soil and dry climate, and the leaf color is dull and dull; hydroponic rich bamboo should choose plants with uniform stem thickness, beautiful shape, base and root system without decay. Potted rich bamboos should choose strong plants with bright green leaves, bright Phnom Penh stripes, plant height below 30cm and 3-6 branches.

Conclusion: after talking about the breeding methods and matters needing attention of rich bamboo, it also introduces how to raise rich bamboo in winter, with special emphasis on the yellowing leaves of rich bamboo and some matters needing attention in the selection of rich bamboo. I believe everyone has a certain understanding and grasp of breeding rich bamboo.

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