How to deal with the yellowing leaves of Catharanthus roseus?

Catharanthus roseus likes a warm and humid climate, likes an environment with sufficient sunshine, is also resistant to semi-shade, is more resistant to high temperature and drought, is not resistant to cold, avoid dampness and fear waterlogging. It is required to be fertile and loose, which is not suitable for saline-alkali land. Catharanthus roseus is a common flower in the day, with a long flowering period and beautiful patterns, no matter at home or in public, it is a beautiful flower that attracts eyeballs, but the scene of yellow leaves often appears in maintenance. What about the treatment?

The main reason for the yellowing of Catharanthus roseus leaves

1. Lack of light: Catharanthus roseus likes a warm, sunny environment. If potted plants are placed in shade for a long time, the leaves will turn yellow due to lack of light.

2. Poor ventilation of basin soil: Catharanthus roseus requires loose matrix and good ventilation, such as planting in clayey alkaline soil, the root system is underdeveloped due to soil consolidation, which affects the growth of the aboveground part and makes the leaves yellow.

3, lack of fertilizer and stagnant water or too wet: potted Catharanthus roseus in the growing period, such as insufficient fertilization and too much watering or poor drainage, will cause the leaf color to turn yellow. In view of the above reasons, strengthening maintenance in time can avoid leaf yellowing.

Catharanthus roseus leaves yellowing how to do 1. Catharanthus roseus leaves yellowing: soil alkali

Catharanthus roseus does not have a high demand for soil, but it is suitable for growing in acidic soil, alkaline soil will cause Catharanthus roseus to grow poorly, causing leaves to yellowing and not blooming.

Treatment method: to test the acidity and alkalinity of the cultivated soil, if the soil is partial to alkali, it should be treated.

2. Catharanthus roseus leaves yellowing: poor soil permeability.

Poor soil permeability is also a factor for the yellowing of Catharanthus roseus leaves. Many people dill flowers with high soil viscosity and poor water permeability. This kind of soil can not find any problem in a short time, but for a long time, the poor permeability of the soil results in poor breathing in the lower roots of Catharanthus roseus, resulting in frequent yellow leaves and fallen leaves.

Treatment method: to choose sandy soil with excellent drainage performance to cultivate, but also pay attention not to sprinkle too much water.

3. Catharanthus roseus leaves turn yellow: too much water is sprinkled

Catharanthus roseus avoid dampness and fear of waterlogging, basin soil sprinkling should not be too much, otherwise it will affect the root respiration and form old leaves yellow, new leaves yellow.

Treatment method: strictly control watering, it is better to be boring, and pay attention to drainage in dry season.

4. Catharanthus roseus leaves yellowing: too much fat

Many flower friends will worry that Catharanthus roseus is nutritious and not blossom well, and occasionally put a little fertilizer or something into the potted soil, hoping to absorb more flowers. This method is correct, but the fault lies in the frequency of fertilizing, if it is often fertilized, Catharanthus roseus is very difficult to absorb thoroughly, fertilizer remains in the soil, has been around the root, resulting in the spirit of the whole Catharanthus roseus, slow growth, less flowering, petals smaller.

Treatment method: Catharanthus roseus can adopt the method of replacing compound fertilizer and liquid fertilizer in turn, and don't fertilize at any other time. Sprinkle water the next day after fattening to promote nutrition absorption.

5. Catharanthus roseus leaves turn yellow: too little water is sprinkled

Catharanthus roseus can not sprinkle too much water, too little water or too little water for a long time, the plant can not absorb enough water, the new leaves will wilt, and the old leaves will yellow and fall.

Treatment method: pay attention to sprinkling water, basin soil can be sprinkled after drying, watering should be thoroughly watered.

What to do about the yellowing of Catharanthus roseus leaves? causes and solutions of yellowing of Catharanthus roseus leaves

Catharanthus roseus is a very common flower plant. What if the leaves of Catharanthus roseus turn yellow? Next, let's talk about the reasons and solutions for the yellowing of Catharanthus roseus leaves.

1. Soil alkalinity.

Catharanthus roseus does not have a high demand for soil, but avoid alkaline soil. Planting Catharanthus roseus with alkaline soil will lead to Catharanthus roseus leaves yellowing and not blooming.

Solution: the acidity and alkalinity of the planted soil should be tested, and if the soil is partial to alkali, it should be treated.

2. Poor soil permeability.

Poor soil permeability is also the reason for the yellowing of Catharanthus roseus leaves. Many people choose to plant Catharanthus roseus with high stickiness, poor water permeability and poor air permeability, which makes no problem in the short term, but for a long time, the poor permeability of the soil results in poor breathing in the lower roots of Catharanthus roseus, resulting in frequent yellow leaves and fallen leaves.

Solution: choose sandy soil with good drainage performance to plant, but also pay attention to not watering too much.

3. Overwatering

Catharanthus roseus avoid dampness and fear of waterlogging, basin soil watering should not be too much, otherwise it will affect root breathing and cause old leaves yellow, new leaves yellow.

Solution: strictly control watering, it is better to dry, and pay attention to drainage in rainy season.

4. Too little watering

Catharanthus roseus can not be watered too much or too little, too little or not watered thoroughly for a long time, the plant can not absorb enough water, the new leaves will wilt, and the old leaves will turn yellow and fall off.

Solution: pay attention to watering, basin soil can be watered after dry, watering should be thoroughly.

5. Excessive fertilization

Many people worry about growing flowers at home for a long time. If there is not enough fertilizer, they will occasionally put some fertilizer or something into the potted soil, hoping to absorb more flowers. In fact, too much fertilizer will cause root burning and damage the root system. The whole Catharanthus roseus is depressed, grows slowly, blossoms less, and its petals become smaller.

Solution: Catharanthus roseus can be applied alternately by compound fertilizer and liquid fertilizer, and don't apply fertilizer casually at other times.

What to do about the yellowing of Catharanthus roseus leaves? the causes and solutions of Catharanthus roseus leaves withering

Catharanthus roseus is a kind of traditional Chinese medicine in China, which has the effect of cooling blood and lowering blood pressure, calming and calming the mind. And its ornamental value is also very high, colorful, it is easy to attract people's attention. Although its family planting method is not very difficult, some flower friends still reflect that the leaves of home-grown Catharanthus roseus often turn yellow, affecting their appearance. In this case, we can only analyze the reason first.

What if the leaves of Catharanthus roseus turn yellow

1. The reason is that the soil is alkaline. Catharanthus roseus does not have a high demand for soil, but it is suitable for growing in acidic soil, alkaline soil will lead to poor growth of Catharanthus roseus, causing leaves to yellowing and not flowering.

Solution: the acidity and alkalinity of the planted soil should be tested, and if the soil is partial to alkali, it should be treated.

2. Reason: poor soil permeability. Poor soil permeability is also the reason for the yellowing of Catharanthus roseus leaves. Many people plant flowers with high soil viscosity and poor water permeability. There is no problem with this kind of soil in the short term, but over time, the poor permeability of the soil results in poor breathing in the lower roots of Catharanthus roseus, resulting in frequent yellow leaves and fallen leaves.

Solution: choose sandy soil with good drainage performance to plant, but also pay attention to not watering too much.

3. Reason: too much watering. Catharanthus roseus avoid dampness and fear of waterlogging, basin soil watering should not be too much, otherwise it will affect root breathing and cause old leaves yellow, new leaves yellow.

Solution: strictly control watering, it is better to dry, and pay attention to drainage in rainy season.

4. Reason: too much fertilizer. Occasionally put a little fertilizer or something into the basin soil, hoping to absorb more flowering, this way is correct, but the fault lies in the frequency of fertilization, if frequent fertilization, Catharanthus roseus is very difficult to fully absorb, fertilizer remains in the soil, always around the root, resulting in the whole Catharanthus roseus malaise, slow growth, less flowering, petals smaller.

Solution: Catharanthus roseus can be applied alternately by compound fertilizer and liquid fertilizer, and don't apply fertilizer casually at other times. Watering the next day after fertilization promotes the absorption of nutrients.

5. Reason: too little watering. Catharanthus roseus can not be watered too much or too little, too little or not watered thoroughly for a long time, the plant can not absorb enough water, the new leaves will wilt, and the old leaves will turn yellow and fall off.

Solution: pay attention to watering, basin soil can be watered after dry, watering should be thoroughly.

Causes of leaf withering of Catharanthus roseus and its solution

1. Reason: pot transplantation. What if your new Catharanthus roseus leaves suddenly withered? In fact, this is not your problem, which shows that the potted flowers have just been planted or just transplanted, but as long as the leaves are not particularly dry and serious, Catharanthus roseus will slowly recover.

Solution: the newly transplanted plant takes about a month to adapt, and then it can basically grow in about a month. During this period, you need to take patient care of Catharanthus roseus, it is alive, and sometimes you feel that flowers are also spiritual!

2. Reason: too much watering. In potted Catharanthus roseus, long-term waterlogging will suffocate and erode the roots, which can not absorb fertilizer and water normally, which will cause the leaves to wither and turn yellow.

Solution: if you see the yellow leaves, it is best not to water them again. Loosen the soil in the basin and let it dry in a ventilated and dry place. Let the moisture left at the bottom evaporate as soon as possible. It is best to dry and water again!

3. Reason: lack of water. If you see the leaves wilting, yellow and soft, you feel like you don't have the spirit, then this is because of the lack of water.

Solution: sprinkle a moderate amount of water on the leaves of Catharanthus roseus, or place a pot of water around the flowers to increase the humidity of the air nearby.

Is Catharanthus roseus poisonous

Yes, Catharanthus roseus is poisonous. Catharanthus roseus is a plant of oleander family. Like oleander, its juice is poisonous, among which flowers are the most toxic.

Catharanthus roseus contains more than 70 alkaloids, such as vincristine, vincristine and isovincristine, among which vincristine has an inhibitory effect on human white blood cells and will poison the nervous system, while isovincristine will mutagenesis in the human body. leading to malformations.

But in general, it will only be poisoned when the wound touches the sap or eats the sap by mistake. Slightly touching the flowers and leaves of Catharanthus roseus will not cause harm to the human body, as long as we usually pay attention to it, do not break the branches and leaves casually. If you accidentally eat Catharanthus roseus, it will cause leukopenia, thrombocytopenia, muscle weakness, limb paralysis and other symptoms.

When does Catharanthus roseus bloom

1. The flowering period of Catharanthus roseus is very long. Basically, when Catharanthus roseus blossoms, it begins from April to May and generally lasts quite a long time. It blossoms continuously from spring to autumn, and can even blossom continuously throughout the year, so it is called daily spring.

2. Catharanthus roseus a single flower does not last very long, usually a flower can bloom for 3-5 days.

The cultivation method of Catharanthus roseus is not very difficult, so you can rest assured to plant a pot at home. In the process of breeding, it is best not to change the basin often, so as not to affect the growth of the plant. In addition, as the juice of Catharanthus roseus is toxic, we should pay attention to it in the process of maintenance, so as to avoid injury caused by accidental ingestion.