Evening incense leaves yellowing how to do, master 5 points of flower worry-free / watering light is the key

Night incense, a common indoor flower, blossoms at night, the fragrance of the flowers is overflowing, and it does not look very beautiful. However, in the process of breeding, flower friends often encounter some problems, such as yellow leaves, then night incense leaves yellow how to do? First of all, we should calm down, then carefully examine the cause, and then solve the problem. The following are the reasons and solutions for the yellowing of night incense leaves arranged by the editor. Come in and have a look!

First, night incense leaves yellowing how to do, find the cause

In the culture method of evening incense, we know that it has corresponding requirements for soil, moisture, light and so on. Once these requirements are not met, the leaves of evening incense may turn yellow. So night incense leaves yellowing how to do, we through analysis, to find the cause of leaf yellowing, and then solve the problem. The specific symptoms and solutions are as follows:

1. The basin has not been changed for a long time.

There are many reasons for the yellowing of evening incense leaves, but first we have to consider potted soil. If the bought nocturnal incense does not change the soil for a long time, its branches and leaves will grow thin, and the leaves will become thin and yellow. Solution: need to change the basin, into a new loose and fertile culture soil and gradually apply thin mature liquid fertilizer or compound flower fertilizer.

2. Too much or too little watering

The tender leaves at the top of evening incense are yellowish, the old leaves are gradually yellow, and the new shoots are shrinking, because too much watering, rain or too much watering leads to excessive wetness in the basin, lack of oxygen in the soil and rot of the beard roots; the color of the top leaves is normal, but the lower leaves gradually dry yellow and fall off upward, which is generally due to the fact that the potted soil is too full and cannot be watered for a long time, resulting in the aging of the branches and stems of the lower leaves.

Solution: ① watering too much: put the flowers off the pot in a ventilated, cool, self-drying soil mass and then put them back into the basin, or often loosen the soil and control watering; ② watering too little: appropriate watering to keep the soil moist.

3. Insufficient or excessive light

Lack of light or exposure to the sun is also one of the reasons for the yellowing of evening primrose leaves. Night incense leaves yellow easily when they are placed indoors where they have not seen the sun for a long time, because the leaves do not get enough sunlight and cannot form chlorophyll, so the whole leaves turn yellow and fall off; if they are directly exposed to the sun, it is easy to cause the tip and edge of the leaves to wither, and yellow spots appear in the sunrise part of the leaves.

Solution: lack of ① light: supplementary light can avoid the disease; ② exposure: move to the shade.

4. Lack of fertilizer causes yellowing of leaves.

Improper fertilization is also one of the main reasons for the yellowing of night incense leaves. Evening incense leaves are tender and yellow, generally due to large flower trees and small pots, and lack of fertilizer. Night incense appears concave and convex, the new leaves are thick, and the old leaves turn yellow, which are mostly caused by fat.

Solution: ① lack of fertilizer: fertilizer and water should be gradually increased, but be careful not to be too concentrated. Change the pot once a year to two years, change the bonsai of trees every four years, add a small amount of base fertilizer at the bottom of the basin, and change part of the new soil; ② fertilization is too much: you should water frequently, suspend fertilization, sow some rapeseed or other seeds in the basin, and pull out after emergence to consume the fertility in the basin.

5. Diseases and insect pests cause yellowing of leaves

In addition to the above reasons, longevity flowers harmed by diseases and insect pests can also cause yellow leaves to fall off. However, if there are a small number of leaves yellowing and falling off at the bottom of the plant in winter, it belongs to normal metabolism.

Solution: find out what kind of diseases and insect pests are affected, and then solve the problem. As for the prevention and control of diseases and insect pests of night incense, it has been introduced in detail, so I won't say much here.

What about the yellowing of evening primrose leaves? what is the reason for the yellowing of evening incense leaves?

Nocturnal fragrant flowers, especially at night, are often cultivated for ornamental use, but when planting, there is often yellowing of nocturnal leaves, so what about the yellowing leaves? What is the reason for the yellowing of evening primrose leaves?

Excessive watering causes yellowing:

The tender leaves at the top of the evening incense are yellowish, the old leaves are gradually yellowing, and the new shoots are shrinking. This is because too much watering, rain or too much watering leads to excessive wetness in the basin, lack of oxygen in the soil and rot of the beard roots. The correct way is to loosen the soil frequently and control watering.

Lack of water causes leaves to turn yellow:

The color of the top leaves of night incense is normal, but the lower leaves gradually dry yellow and fall off upward, which is generally due to the fact that the potted soil is too full to water for a long time, resulting in the aging of the branches of the lower leaves. The excess basin soil should be properly removed and properly watered to keep the soil moist.

Lack of fertilizer causes leaves to turn yellow:

The leaves of evening primrose are thin and tender and yellowish, which is generally due to the fact that the flowers are big and the pots are small or have not changed the soil for a long time, and the fertilizer is insufficient. Fertilizer and water should be increased gradually, but be careful not to be too thick. The potted flowers are changed once every two years, and the bonsai trees are changed every four years. When changing the pots, add a small amount of base fertilizer to the bottom of the pot, and change part of the new soil.

Fertilizer damage causes leaves to turn yellow:

Night incense appears concave and convex, the new leaves are thick, and the old leaves turn yellow, which are mostly caused by fat. Should be watered frequently, suspend fertilization, sow some rapeseed or other seeds in the basin, pull out the seedlings after emergence, in order to consume the fertility in the basin.

Diseases and insects cause yellowing of leaves:

Nocturnal incense has yellow spots due to the damage caused by shell insects. The leaves are rough, dry and yellow, and can be sprayed with 70% trichlorfon 1000 times or 40% dimethoate with 2000 times water due to the damage caused by red spiders. The leaves caused by the virus are yellowing and will quickly spread into pieces, so they should be removed and burned in time, and then sprayed with carbendazim or Bordeaux solution to prevent and cure them. Don't spray too much, or there will be drug damage.

Yellowing caused by lack of light:

Nocturnal incense is easy to turn yellow when it is placed indoors where it has not been in the sun for a long time. Other sunny ones such as jasmine and white orchids will have yellow leaves if the light is not enough. On the contrary, some evergreen, golden bell and pearl orchids that like cool environment will fall off if they are exposed to high temperature and shaded improperly.

What if the leaves of evening primrose turn yellow? The reason for the yellowing of the leaves of evening primrose

Recently, many people have asked about the yellowing of night incense leaves. I don't know what to do. Then we analyze and solve the yellowing of night incense leaves.

First, the water is yellow.

The young leaves at the top of the flowers are yellowish, the old leaves are gradually yellow, and the new shoots are shrinking. This is due to too much watering, rain or too much watering, resulting in excessive wetness in the basin, lack of oxygen in the soil and rot of the beard roots. The right thing to do is to loosen the soil often and control watering.

Second, lack of water and yellow

The color of the top leaves of potted flowers is normal, but the lower leaves gradually dry and fall off upward. This is generally due to the fact that the basin soil is too full to water for a long time, resulting in the aging of the branches of the lower leaves. The excess basin soil should be properly removed and properly watered to keep the soil moist.

Third, lack of fat yellow

The leaves of flowers are thin and tender and yellowish, which is generally due to the fact that the flowers are big and the pots are small or have not changed the soil for a long time, and the fertilizer is insufficient. Fertilizer and water should be increased gradually, but be careful not to be too thick. Potted flowers change pots once a year or two. Bonsai trees are changed every two or four years. When changing the basin, add a small amount of base fertilizer to the bottom of the basin, and change part of the new soil.

IV. Fat harms yellow

The leaves appear concave and convex, the new leaves are hypertrophic, and the old leaves turn yellow, which are mostly caused by fat. Should be watered frequently, suspend fertilization, sow some rapeseed or other seeds in the basin, pull out the seedlings after emergence, in order to consume the fertility in the basin.

5. Partial alkali yellow

The leaves of flowers such as camellias, azaleas, orchids, white orchids and gardenia turn yellow gradually because the soil is slightly alkaline, which can be irrigated with grass soaking water, or ferrous sulfate, and the leaves will turn green soon.

6. Yellow diseases and insect pests

Leaves appear yellow spots, due to shell insects damage; leaves rough and dry yellow, due to red spiders, you can use 70% trichlorfon 1000 times liquid or 40% dimethoate plus water 2000 times spray; leaves caused by virus yellowing, will quickly spread into pieces, should be removed and burned in time, and then spray carbendazim or Bordeaux solution to control. Don't spray too much, or there will be drug damage.

7. Lack of yellow light

The flowerpot is easy to turn yellow if it is placed indoors where there has been no sunshine for a long time. Like the sun jasmine, white orchid, such as lack of light will be yellow leaves, on the contrary, some like the cool environment of evergreen, upside down hanging golden bell, pearl orchid and so on, if the high temperature exposure, improper shade, will also yellow leaves fall off.

Through the above introduction, we should know that there are many reasons for the withering and yellow leaves of night fragrant flowers, and the characteristics of yellow are also different, so we should make an analysis according to the specific situation, and then make a judgment and disposal after comparison.