What s up with the yellow leaves of the hibiscus tree? What causes hibiscus yellow leaves

Generally speaking, there are three reasons for the yellow leaves of hibiscus. First of all, it may be caused by too little watering, although it is said to be able to tolerate a certain dry environment, but long-term drying will cause the plant to die. Secondly, it may be caused by insufficient light, if the plant is grown in a shaded and airtight environment for a long time, the plant is prone to malnutrition.

In the end, it may be that the plants are not pruned.

1. It may be caused by improper watering.

Many people may know that hibiscus flowers like a warm and humid environment, so when maintaining hibiscus, it is necessary to provide a warm and moist environment that is conducive to growth, but if you water it too much or too little when watering, it will cause the leaves of the hibiscus to turn yellow due to insufficient watering, so you must pay attention to controlling the amount of watering to water the hibiscus and keep the soil moist.

2. Reasons for improper fertilization of hibiscus.

Hibiscus naturally needs to be fertilized from time to time when it grows, because if it is not fertilized for a long time, it will make the hibiscus flower unable to grow normally due to lack of fertilizer, and the leaves will turn yellow. And if you fertilize too much when raising hibiscus flowers, it is not good, and it is easy to let the strong fertility cause root burning and yellow leaves to the roots of the flowers. Therefore, as long as it is properly fertilized when raising hibiscus, hibiscus flowers will generally be fertilized with phosphorus and potassium fertilizer, and a little auxiliary nitrogen fertilizer will be fine.

3. Pests and diseases make hibiscus flowers appear yellow leaves.

For hibiscus, if there is no problem with normal maintenance that makes its leaves yellow, it is likely that the hibiscus flower has pests and diseases, and the hibiscus flower will be infested by pests and diseases. For example, leaf blight can cause the leaves of hibiscus flowers to turn yellow or even wilt, while aphids can bite the leaves of hibiscus flowers, causing the leaves to turn yellow due to the lack of leaf juice due to the bite of aphids.

4. The reason for changing pots during the flowering period makes the leaves of hibiscus flowers turn yellow.

When maintaining hibiscus, if you want the hibiscus to grow normally, it is also a very important step to repot the hibiscus, but when you repot the hibiscus, you should pay attention to the time, if you change the pot of the hibiscus at the wrong time, it will make the hibiscus grow badly. For example, in the flowering period of hibiscus flowers to repot the hibiscus flowers, at this time the hibiscus flowers are using all the nutrients for the growth of buds and flowering, if the repotting is carried out, it will have a certain impact on its roots, so that the roots can not supply the normal demand for nutrients, and it is easy to make the leaves of the hibiscus flowers yellow.

<> hibiscus yellow leaves, is caused by too strong light, insufficient nutrients, watering discomfort and other reasons, when breeding hibiscus, it is necessary to place the plant in the scattered light, to avoid it by strong direct light, and to apply phosphorus and potassium fertilizer once a month, so that the hibiscus leaves restore verdant green, and according to the degree of soil dryness and wetness to water, to maintain the normal growth of hibiscus.

1. The light is too strong.

Hibiscus is not tolerant to strong direct light, it will turn yellow when the light is too strong, when cultivating hibiscus, it is necessary to place the plant in a place that can irradiate the scattered light to promote the healthy growth of the plant, or to do a good job of shading measures for the hibiscus, the rental bush can be covered with a shade net above the plant, so as not to burn its leaves.

2. Insufficient nutrients.

When cultivating hibiscus, if the fertilization is too little, or the fertilizer is too simple, it will lead to malnutrition of the plant, which will make the leaves of the hibiscus yellow, and it is necessary to apply phosphorus and potassium fertilizer every other month during the growth of hibiscus, and regularly spray potassium dihydrogen phosphate on the leaves of the hibiscus to delay the senescence of the plant.

3. Watering discomfort.

Hibiscus likes water, but does not like waterlogging, when cultivating hibiscus, if watering is too frequent, it will cause the plant to rot in water, so that its leaves will wither yellow, and if watering too little, it will cause the leaves of hibiscus to wither yellow, and it needs to be watered according to the dryness of the soil to keep the soil moist.

4. Maintenance method.

When maintaining hibiscus, it is necessary to prune the branches and leaves of the plant regularly, you can cut off the dead yellow leaves of the hibiscus to avoid the loss of excess nutrients, and cut the branches and leaves that are too dense to improve the light transmission and ventilation between the plants, and change the potting soil for the hibiscus every 1-2 years.

<> hibiscus for water requirements is not very high, during the growth period to keep the courtyard moist, not drought can, if the watering is too little or the rainy season does not pay attention to the water in the courtyard, it will cause the leaves of the hibiscus to yellow and fall, timely hibiscus on the watering requirements are not strict, we should also maintain a heart for the growth of hibiscus, should not accumulate is the principle of hibiscus watering.

Vigorous growth, full of beautiful flowers is the hope of every flower friend who plants hibiscus, so it has also led to many people will fertilize a lot of hibiscus, resulting in yellowing of hibiscus leaves, poor growth, hibiscus fertilization with phosphorus and potassium fertilizer as the main fertilizer, supplemented by nitrogen fertilizer for reasonable top dressing, if too much fertilization will make the fertilization thick, burn the root system, make the leaves yellow and fall, if the daily fertilization finds that the hibiscus leaves are yellow and fall, it is necessary to pay attention to whether it is a problem caused by too much fertilization.

Aphids are one of the more common insect pests of hibiscus, which has caused serious harm to the growth of hibiscus. Aphids suck the sap from the leaves, and too much sucking can cause the leaves to gradually turn yellow and wilt. Therefore, aphids are also an important reason for the yellowing of leaves, if so, it is necessary to spray pesticide sprays in time for treatment;

Similarly, disease is also an important factor in the yellowing and wilting of hibiscus leaves, especially leaf blight. Leaf blight is characterized by the production of many small black lesions on the back of the leaves, and the use of sprays such as mancozeb can restore the leaves to normal.

The healthy extension of hibiscus is inseparable from repotting, but changing the pot needs to grasp the timing, the flowering period of hibiscus is forbidden to change the pot, the most likely cause of repotting is to cause certain damage to the root system of the hibiscus, once the root system is damaged, the flowers and leaves of the hibiscus will receive certain damage, resulting in the yellowing of the leaves and falling off.

Hibiscus is a common ornamental plant, its leaves are green, the flowers are bright, the ornamental value is particularly high, suitable for planting in garden scenic spots and courtyards.

However, in the production process of hibiscus, the leaves often turn yellow, and the yellowing of its leaves will affect the normal growth and also affect its ornamental value, so what is the reason for the yellowing of its leaves? What should I do with it when its leaves turn yellow?

What should I do if the leaves of the hibiscus flowers are yellow1.

Hibiscus is a green plant that likes a warm and humid environment, in the process of its growth, if the watering is not reasonable, it will cause its leaves to turn yellow, under normal circumstances, Lingbo slag in the normal growth of kapok, as long as the soil is kept moist, if the soil is too dry or too wet, it will make its leaves yellow, then the best way to deal with it is to control the amount of watering, and in the English high incidence weather to do a good job of drainage in time.

2. Fertilization is not reasonable.

Improper fertilization of hibiscus flowers during the growth process, and when it appears too much or too little fat, it will also cause its leaves to turn yellow.

The fertilizer applied to hibiscus flowers during the growth process should be mainly phosphorus and potassium fertilizer, and if it appears that the leaves turn yellow, it should be supplemented with the application of appropriate nitrogen fertilizer.

If the leaves turn yellow because of too much fertilization, you need to water the fertilizer in time.

3. Pests and diseases.

The appearance of pests and diseases is also the main reason for the yellowing of the leaves of hibiscus flowers, some diseases will leave a large number of small black spots on the back of the leaves, and the leaves will turn yellow when they are serious, at this time it is necessary to spray drugs in time, it is best to spray mancozeb, when the drugs eliminate all the pests on the hibiscus flowers, its leaves will slowly return to normal color.

4. Root system damage.

Usually if people make hibiscus into potted plants, in indoor breeding, it is necessary to replace new pots every year, when replacing pots, if you accidentally damage the renewal of hibiscus, and then move into a new pot, it will also cause the leaves of hibiscus to turn yellow and fall off, this is the best treatment, is to put hibiscus in a cool environment to slow down the seedlings, and after its root system returns to normal, it will grow new green leaves.

1. Improper watering: excessive water will make the new leaves of hibiscus flowers turn pale yellow, and the old leaves will turn yellow and fall off. 2. The light is too strong:

Exposing it directly to the sun will burn the leaves. 3. Infection with pests and diseases: After being eroded by pests and diseases, a large number of yellow spots will appear on the leaves.

4. Improper fertilization: mainly due to excessive fertilizer concentration and excessive fertilization.

1. Improper watering

Hibiscus is a plant that likes a warm and humid environment, but is afraid of stagnant water, if it is watered too much during the maintenance process, the soil will be moist and not breathable, resulting in inhibition of root respiration, so that the rhizome will be hypoxic and wilted, and excessive water will make the new leaves of hibiscus flowers become light yellow, and the old leaves will be yellow and fall off.

2. The light is too strong:

Hibiscus flowers can grow in full light and can tolerate shade, but in the summer high temperature and strong light season, if it is directly exposed to the sun without any shading measures, the leaves will be burned, resulting in the phenomenon of yellowing of leaves.

3. Infected with pests and diseases

The yellowing of hibiscus leaves may also be caused by pests and diseases, some pests and diseases will leave large black spots on the back of the leaves, and in severe cases, it will cause the leaves to turn yellow, so the diseased leaves should be cut off in time and sprayed with carbendazim solution.

4. Improper fertilization

Although hibiscus flowers like fertilizer, but can not be fertilized too thick or too often, too thick fertilization will cause root damage, and too frequent fertilization will cause fertilizer damage, both will inhibit root activities, resulting in yellowing of leaves, is not conducive to the healthy growth of hibiscus.

Hibiscus flowers are always yellow leaves, which may be caused by overwatering, you need to control the frequency of watering, you can wait until the soil surface is white before watering, and pruning in the spring of each year, you can cut off the wilted and yellowed leaves of hibiscus, and place the hibiscus flowers in a bright place to promote its synthesis of chlorophyll.

1. Control watering

Hibiscus flowers are not resistant to waterlogging, when cultivating hibiscus flowers, if you water too much, it will cause the root system of the plant to rot in water, so that the leaves of the hibiscus flowers are yellow, you need to wait until the soil surface is white before watering, and when watering the hibiscus flowers, you need to let the tap water stand for 1-2 days before use.

2. Pruning

When cultivating hibiscus, it is necessary to prune in the spring of each year, and the branches and leaves that are too dense can be cut off to improve the light transmittance and ventilation between plants, and the wilted and yellowed leaves of the hibiscus should be removed to reduce the loss of nutrients and promote the growth of green new leaves.

3. Lighting conditions

Hibiscus is a sun-loving plant, it can grow normally in a bright environment, when cultivating hibiscus, it needs to be placed in a place where it can be exposed to sunlight to promote photosynthesis of plants, but when the light is too strong, it is necessary to do shade measures for hibiscus flowers to avoid its leaves being burned.

4. Maintenance method.

When maintaining hibiscus, it is necessary to apply nitrogen fertilizer and phosphorus fertilizer to the plant after flowering to make the flowers of hibiscus more brilliant, and spray potassium dihydrogen phosphate on the flowers and leaves of hibiscus to delay the senescence of the plant, and in winter, move the hibiscus to an indoor temperature higher than 10 degrees.

The yellowing of hibiscus leaves is mostly due to excessive water, so it is enough to control watering and ventilate more.