Why do some of the leaves of orchids turn yellow after repotting?

What Lan You asked was that the leaves are yellow, and the real weeding generally starts from the leaf carapace, the old seedlings, and the leaf tips of the orchid seedlings. The whole phenomenon is from the outside in, from the top down, which is in line with the distribution of nutrients and water (especially water) in the plant.

If it is a normal weed, don't worry, put the orchid in a place with higher shade, avoid the strong light at the beginning of the pot, and the orchid plant will gradually ease. When the orchid root adapts to the new potting soil environment, the weeding of the orchid leaves will naturally stop.

This article is about changing potted orchid seedlings, so I won't say much about the newly planted orchids in the mountains. The yellow leaves of the repotted orchid seedlings may be due to the lack of nutrients of the plant after the repotting, because the original plant is stored with nutrients, and some orchid seedlings may lose the supply of the mother plant after the seedlings are divided, so this is a manifestation of nutrient failure.

The second situation is that the orchid does not pay attention to the light after repotting, and the normal work of the orchid root is stopped for a short time after the repotting. At this time, if the light is too strong, the water evaporation of the leaves will also cause the leaves to turn yellow.

So how to avoid the two situations mentioned above:

1. Ten days before changing pots, spray some foliar fertilizer on orchids, so that the plants can store more energy, so that even if the nutrients are not as good as in a short period of time after changing pots, it will not cause the orchid seedlings to retreat.

2. Do not bask in strong light for ten days after changing pots, and irradiate the slanting sun for two hours a day, and then manage normally after the orchid plant recovers.

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.

This is very normal, when you change the pot, you hurt the root, you cut off the yellowed leaves, and when the injured root heals and the tissue is formed, after the new roots grow, new leaves will germinate again.

In my opinion, it is generally necessary to sterilize the root before changing the pot and then dry it. After changing the pot, you must water it once, which is the so-called "root water" and then put it in a cool place.

Take out and cut off the rotten roots, remember to disinfect, soak the roots in potassium permanganate water, and make the color pink. For 15 minutes, rinse with water, let dry, and repot.

What causes the leaf to wilt soon after the orchid is potted? After reading it, I understand.

1. The leaf color is yellowish and the growth is normal: the light is too strong;

2. The leaf color turns yellow, and the new shoots are small: excessive light, lack of nitrogen fertilizer and necessary humidity.

3. Yellowing and shedding of old leaves: caused by normal aging or repotting;

4. Rapid yellowing and falling off of old leaves: too much watering, too diligent planting, improper potting and planting.

5. The tip of the new leaf is scorched: excessive fertilization, unclean planting materials and water quality.

6. The new leaves and old plants are all black: the dampness and heat in the pot are excessive, and there are rotten roots in the root system.

7. After the new sprouts are unearthed, they stop growing: there are rotten roots or unclean things next to the new sprouts, the old plant is insufficient or the crystal roots of the new sprouts are fertilized, turn over the planting material around the new sprouts, remove the impurities and use fine planting materials to guide the roots to restore their growth

8. There are scorched spots on the leaves, and there is no yellow around the periphery: scorching sun burn spots.

9. The head of the leaf is scalded: the water temperature of watering is too high: the temperature is too high when watering: it is drenched with showers when the temperature is high in summer.

Raising orchids should be analyzed:

Characteristics of orchidaceae.

Habits of orchids.

Requirements for the day-to-day management of orchids.

The first thing to say is the soil, which should be an orchid with a special aerial root system, so the sudden frontal air permeability must be excellent.

Temperature, orchids grow in tropical rainforests in the wild, so the temperature difference between day and night is one of the main conditions for flowering, so we produce medium and long to do low-temperature flowering.

The yellowing of your orchid leaves is the main phenomenon of low temperature, and the temperature in your home is below 20 degrees.

Raising Phalaenopsis, Chunlan, Wenxin Orchid, Dancing Orchid, Perfume Orchid, Cattelan, or what???

But these need temperatures of 20 degrees or more to thrive, and of course 15 degrees is no problem if you survive. But in the bottom of the day, frost damage will occur, stop growing, this is the leaves will turn yellow, this is just an example of what I said, you can try it orchids in a slightly warmer room! I guess it can alleviate a little.

There is no need to rush when the leaves of orchids are yellow, there are 2 reasons to get it, and you will become a "gentleman in flowers" in seconds

The most common problem encountered in home flower raising is yellowing of the leaves. The leaves of the flowers are yellow, and there are generally the following reasons:

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. (Can be dried roots).

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.

Is it too much fertilizer. Or the reason why there is too much water glue.

It's not that you're watering too much and you're not alive, or you spray some chlorophyll.

The main reasons for this phenomenon are as follows:

1. The ventilation and permeability of the soil is poor, resulting in anaerobic respiration of the roots, and a large amount of heat can be evacuated in time during the anaerobic respiration process, resulting in the phenomenon of root burning. The roots are damaged, and the growth of the plant is also impaired.

2. The nutrients required for plant growth are insufficient, and should be replenished in time. Such as: root power of roots, plant growth nutrient solution, etc.

3. If it is a potted plant, it may be the influence of the root growth space, the space of the potted plant is relatively small, and the growth time is long, and it needs to be repotted.

4. Whether it is potted or land-based, both are inseparable from the factor of soil. If there are not enough nutrients in the soil, will it be able to grow healthily?

If the orchid beads are healthy and disease-free, one or two dead leaves are normal, and now the new orchid shoots are growing, and the old and the new are replaced. Also beware of the disease, orchid leaf wilting, usually due to too much fertilization, the substrate is too dry, or too wet, you can take out the orchid root to see.

Orchid likes shade, avoids direct sunlight, likes moisture, avoids dryness, likes fertile, rich in a lot of humus, well-drained, slightly acidic sandy loam soil, and should be in an environment with air circulation.

If the leaves are yellow, if the seedlings are more than 3 years old, the seedlings are less than three years old, the yellow leaves are rotten, and the light intensity burns the yellow leaves, check it yourself, and then take effective methods.

Fertilizer and nutrients can't keep up, fertilize it.

Causes of yellowing and solutions:

1. Water yellow. Caused by over-frequent watering, it is characterized by no obvious change in old leaves and yellowing of young leaves; Water should be controlled immediately.

Second, dry yellow. Due to lack of water, caused by drought, it is characterized by the old leaves from the bottom to the top of the first yellow, if the lack of water for a little longer, the whole plant yellow leaves, or even death, should be watered in time. 3. Fat yellow.

Caused by excessive fertilization or high concentration, the extra round brother point is that the young leaves are hypertrophied, shiny, orange cracked and uneven; Fertilizer, cultivation and watering should be controlled.

Fourth, hungry yellow. If the source is caused by insufficient fertilizer, low fertilization concentration, and the fertilization interval is too long, it is characterized by young leaves, young stems are yellow first, if this phenomenon is not fertilized in time, it will also cause the whole plant yellow leaves or even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning.