Why the leaves of Fusang flowers turn yellow

There are eight reasons why hibiscus leaves turn yellow. why do other people blossom all the year round?

Many friends will plant a pot of hibiscus flowers in the yard and on the balcony. I am no exception. Recently, my two-flower hibiscus flowers bloomed brightly. The flowers are very bright and charming. There are many kinds of it, and when you grow out of the bud, you will be able to blossom in all seasons, but what about the yellow leaves?

Why do the leaves of hibiscus turn yellow?

Hibiscus flower is a tropical flower. When the environment is not suitable for northern protection, it is easy to cause yellow leaves. There are many reasons. No matter which reason, if not dealt with in time, it is easy to affect flowering, serious leaves continue to decline, and eventually lead to plant withering.

1. Too much water

Although hibiscus likes to keep it moist all the year round, it doesn't mean it can grow in a moist environment. If there is no sunlight, or the solidification position is not enough, the soil is always wet, and hibiscus flowers are easy to turn yellow. Leaves, too much water will not only promote their growth, but also easily lead to rotten roots, we must wait for the soil to dry before watering, so as not to accumulate water.

two。 Too little water

If you are a potted hibiscus flower, cultivated in a sunny environment, the basin is dry for a long time, and the leaves are easy to turn yellow, especially in summer, where the sun is strong, and its water demand is also very high. You can keep the water every day or soak it every other day. Keep the soil moist properly without too much moisture.

3. The temperature is too low

Hibiscus flower is a tropical plant. The lower curing temperature should be kept above 5 degrees to avoid frostbite. The better curing temperature should be kept above 15 degrees to ensure that it blossoms all the year round. If the temperature is too low, the leaves will turn yellow.

4. Sunshine

The maintenance of hibiscus must be maintained as much as possible. Without sunshine, it is impossible to blossom. Don't elevate it in a shady environment. Otherwise, the leaves turn yellow easily, and the leaves will become very tender and will not blossom. / P >

Of course, if it is a potted hibiscus flower, do not improve it in an overexposed environment, especially if it is not strong enough to grow. After the summer temperature of potted plants exceeds 36 degrees, the afternoon can be shaded properly.

Hibiscus flowers fall asleep easily when the temperature is too low in winter. At this time, the yellow leaves will also turn yellow. At this time, it is impossible to pour too much water, and avoid freezing, avoid the temperature below 5 degrees. If the leaves fall off and the branches are soft, it is sleep.

5. An annoying pest

If the environment to be cured is too hot or poorly ventilated, or the air is too dry, it is easy to induce red spiders. Mulberry flowers infected with red spiders, the leaves will have long spots, and then the leaves slowly turn yellow or red, the leaves are very easy. There are small cobwebs that need to improve ventilation, increase environmental humidity and spray pesticides.

6. Malnutrition

Hibiscus is a tropical flower that likes slightly acidic soil. If the soil is alkaline, that is, the pH of the soil is greater than 7, it is easy to cause leaves to turn yellow and affect flowering. The soil needs iron and sulfur supplements. Pour in ferrous sulfate for two to three weeks, or give some organic fertilizer to remove soil from the soil and replace compost or peat soil.

7. Soil

If the soil of cultivated hibiscus is found to agglomerate, it is necessary to change the potted plant in time, or loosen the soil properly to avoid soil compaction, otherwise it is easy to cause yellow leaves and rotting roots.

The topsoil can be removed and some loose, fertile, well-drained slightly acidic humus or sandy soil can be replaced. If the root is too crowded, replace the basin.

8. Pesticide

The old gardener does not like to spray mulberry flowers directly with insecticides because it is easy to cause yellow leaves. Excessive use of pesticides is very disadvantageous to hibiscus flowers, hibiscus flowers can easily cause yellow leaves, especially after spraying pesticides. It brings a lot of pressure to hibiscus flower.

The above reasons of hibiscus yellow leaves have been understood. I found that the yellow leaves must be treated in time so as not to consider the illness when the disease is serious. Although yellow leaves will not directly kill hibiscus, they will slowly wither it. .

Why do your tropical hibiscus plants keep yellowing? what are the techniques for promoting flowering? Hibiscus is a very common tropical ornamental flower. If it is not properly maintained, it will continue to turn yellow and the leaves will continue to fall. If not treated in time, hibiscus plants can easily lead to or wilting or growth retardation, not to mention flowering.

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Hibiscus is very suitable for warm and humid environment all the year round. It is easy to turn yellow when dry in a dry indoor environment, especially in the absence of light and poor ventilation.

If the environment is suitable for leaf yellow, it will recover naturally soon. If the environment is not suitable, the condition of hibiscus yellow leaves will be more serious.

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i. The cause of formation of hibiscus yellow leaf

There are many reasons for the yellow leaves of hibiscus. Let's take a look at the most common ones.

1. Moisture:

Hibiscus flowers need more water to keep the soil moist during the growing season, but if the soil is too moist or watery, it can easily lead to yellow leaves. Dry saplings and other potted soil, or completely dry the surface of the soil 3-5 cm, and then pour water once is enough.

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two。 Soil:

Hibiscus flower is a tropical flower. It likes slightly acidic soil. If the pH value of the soil is too high, that is, the soil is alkaline, it is easy to cause hibiscus leaves to turn yellow. You can give some ferrous sulfate solution regularly and you will soon get back to health.

Of course, we must also pay attention to the condition of potted soil. If we find caking or knotting, we should loosen the soil in time. If it has not changed for many years, it is necessary to replace the basin in spring and autumn.

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3. Temperature change:

If the ambient temperature of mulberry flowers is too high, it is easy to cause yellow leaves. Hibiscus flower is a tropical flowering plant. The lower curing temperature should be kept above 5 degrees. If the temperature is too low, it can cause frostbite. It's a good condition that the leaves are yellow. At the same time, hibiscus raised indoors should be kept away from vents or air conditioners.

4, lighting:

Hibiscus flower is a plant that likes light very much. If it stays in the shade, the leaves will turn yellow as a whole. Hibiscus can rise in the position of direct exposure for 4 to 8 hours a day. When the summer temperature exceeds 35 degrees, it should be shielded correctly. Avoid excessive sun exposure in the afternoon, or it will cause sunburn of the leaves.

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5. Insect pests:

If you find that the leaves of hibiscus are yellow, just check the leaves and branches for pests. The most common are locusts and red spiders. The soil is moist and the environment is hot. It is particularly vulnerable to the influence of insects. They are usually hidden on the back of the leaves. It can be sprayed directly on insects or insects.

6. Nutritional issues:

The leaves of hibiscus are yellow and may be short of fertilizer or overfertilized. Fertilization of hibiscus is generally carried out in spring and summer, and must be stopped after cooling in autumn. The concentration of fertilizer in hibiscus should not be too high, and avoid applying excessive compound fertilizer.

It is better to regularly give some acidic fertilizers, such as ferrous sulfate, to prevent the leaves from yellowing.

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7. Chemical pesticide

If excessive drug spraying, it is easy to cause hibiscus leaves to turn yellow, especially after spraying, especially during spraying. At this point, you need to spray water once, and then water it to avoid drug residue.

8, sleep

If the temperature of the hibiscus is below ten degrees below zero, it will fall asleep. At this time, if the leaves at the bottom of the hibiscus are yellow, it is normal. Of course, keep the temperature above 5 degrees to avoid frostbite.

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Good, the right way to deal with it:

If you find that the hibiscus flowers you pick up have yellow leaves, you should first check whether the soil is moist, whether there are diseases and insect pests, check whether the soil is flattened, and then improve the environment and spray in time to prevent diseases and insect pests.

1. Trim:

The yellow leaves of hibiscus should be cut off and some branches with diseased leaves should be cut off. Hibiscus flowers grow particularly rapidly, and many branches are cut off, as shown in the following picture. It will grow more branches and leaves, grow more dynamic, and help to blossom.

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2. Wait patiently:

Hibiscus maintenance must be patient, regularly clean the surrounding maintenance environment, maintain ventilation and light, and find that yellow leaves should be dealt with in a timely manner.

Why does mountain tea turn yellow?

Pictures from the Internet

There are many reasons why mountain tea turns yellow. Some plants often turn yellow and white in summer due to lack of phosphorus, iron or sulfur in the soil. It was found that the original potted soil could be replaced with humus-rich shale and diluted 300 times with ferrous sulfate every 15 days from April to September, or leaves were sprayed with trisulfide solution. It can relieve the symptoms. Spraying should be carried out in cloudy days and sunny days in the morning or evening.

When the supply of nitrogen in plants is insufficient, the leaves will turn yellow and bean cake water can be applied. The growing season is twice a month, and the ratio of fertilizer to water can be 10%, 20%. If 0.1% ferrous sulfate is added to the fertilizer solution, the effect is better.

In addition, watering may continue to be too dry or too wet to produce yellow leaves. When the camellia enters the spring and summer growing season, the temperature increases and the water demand increases, which needs to be watered every 1-2 days. On hot and sunny days, plants are sheltered by curtains, sometimes in the morning and evening.

In addition, red spiders or scale insects can also turn the leaves of plants yellow.

Time: 2019-05-13 Click: