What about the yellowing leaves of four Seasons Begonia? common diseases and insect pests of four Seasons Begonia

As soon as we hear the name, we know that it is a very beautiful flower. Its flowering period is relatively long and has high ornamental value, but if it is not taken care of properly, it is also very prone to problems. Today, let's have a good understanding of its problems, take good care of them, and avoid problems.

What if the leaves of the four seasons begonia turn yellow?

1. Overwatering

The young leaves on the top of the flowers are yellowish, the old leaves are gradually yellowing, and the new shoots are shrinking. This is due to long rain or too much watering, too wet in the basin, lack of oxygen in the soil, and root rot. The soil should be loosened often, watering should be controlled and heavy rain should be avoided. On the other hand, the leaf color on the top of the soil drought is normal, and the lower leaves gradually dry yellow and fall off upward. This is due to the fact that the pan soil is too full or impermeable for a long time, resulting in the aging of the branches of the lower leaves, which should be watered appropriately to keep the soil moist.

3. Lack of fertilizer

The leaves of flowers are thin and yellow, which is due to the fact that the big pots of flowers are small or have not been changed for a long time, soil change and lack of fertilizer, so water and fertilizer should be gradually increased and pots should be changed at the right time.

4. Fertilizer damage

Flower leaves appear concave and convex, new leaves are thick, old leaves are yellowing, should be watered frequently, fertilizer can be suspended, vegetable seeds can be sprinkled in the basin, pulled out after emergence, in order to consume fertilizer in the basin, so that flowers and trees can resume normal growth.

5. Partial alkali

Flowers and trees that like acid soil, the leaves are gradually yellow, due to the alkalinity of the soil, can be irrigated with grass soaking water, and apply some, the leaves will turn green.

6. Light discomfort

Potted flowers are often kept indoors, and flowers are easy to have yellow leaves. Those who like sunshine, such as lack of light, will also have yellow leaves. Some flowers that like a cool environment, such as high temperature exposure, their leaves will also turn yellow and fall off.

Common diseases and insect pests of begonia in four seasons

1. Aphids.

Spring and autumn are the peak growing season of begonia in four seasons. Aphids are easy to occur if the plants are not well ventilated and the environment is muggy. This is a bluish yellow or brown bug, often spread over the tender shoots or buds at the top of the plant, sucking the leaf sap of Begonia with needle-like mouthparts, causing the tender leaves to curl and atrophy, resulting in death.

The method of prevention and control mainly depends on strengthening indoor ventilation. If there are insect pests, you can use cigarette butts to soak water, soak for 24 hours and then spray on the stems and leaves of four seasons crabapple, the effect is better. Spray aphids with 1500 times of 50% aphid emulsion or 1000 times of 25% imidophos emulsion.

2. Red spider.

In the dry and hot summer, the four seasons crabapple is often attacked by red spiders. This is a red bug that usually absorbs juice behind the young leaves, causing brown spots on the leaves. When the harm is more serious, the leaves will turn yellow and fall off, affecting the flowering of begonia.

Because the worm is very small, it is usually difficult to find. But as long as you turn the leaves around and look carefully, you can see some red bugs and sometimes some filamentous nets. If the red spider wants to spray water on the ground or use some spray to increase the humidity of the air, to inhibit the red spider reproduction. If the pest is not too serious, the diseased leaves can be removed, and if the number is large, it can be sprayed with 2000 times the content of 40% triclofenac emulsion or 2000 times the content of 50% trithiophos emulsion.

3. Leaf curlers.

This kind of insect is very small, mainly because the larvae will eat the tender leaves, causing the leaves to reverse curl, the plant growth decline, and the flowers are not good. To control this disease and insect pests, as long as more inspection, timely cutting off the diseased leaves.

4. Stem rot.

Wet markings appear in the lower parts of the rhizome and stem, which can lead to softening and decay if not paid attention to. This is mainly because the basin soil is too wet, so it is necessary to master the amount of water to prevent it. The occurrence of diseases and insect pests in the four seasons begonia cultivated at home is rare. However, the location of potted plants must be properly placed, in a cool and ventilated growth environment, and to prevent infection by other potted plant diseases and insect pests.

What if the four Seasons Begonia falls

1. Lighting factor

We should know that during the flowering period of the four seasons crabapple, we should pay attention to the maintenance of temperature, on the one hand, to avoid excessive temperature and burn the buds, on the other hand, when the weather is cold, we should ensure the appropriate temperature in order to ensure the normal flowering of flowers. in addition, in the hot season, in the process of maintenance, we need to pay attention to shading, preventing flower burns is also an important measure to prevent flowers.

2. Watering factors

During the maintenance of four seasons crabapple, if the basin soil is too wet to cause stagnant water, it may cause the phenomenon of flowers falling. Therefore, when watering, we must pay attention to control the amount of water and maintain reasonable humidity.

3. Fertilizer factors

The first reason for the phenomenon of falling flowers in plants is the lack of nutrients. During flowering, if the supply of fertilizer is not enough to meet the energy needed for flowers to open, it will cause the phenomenon of falling flowers. Therefore, in daily maintenance, we must pay attention to the application of adequate nutrients.

As the saying goes, too much fertilizer will also cause flowers to fall. You know, too much fertilizer may harm the roots of plants. At this time, when reflected on the surface of plants, flowers or yellow leaves will fall. Therefore, daily control of fertilizer application and rational fertilization is also an important way to avoid falling flowers.

Is the four Seasons Begonia suitable for keeping indoors?

To solve this problem, first of all, we need to know whether this plant is poisonous. Recently, many people suspect that it is toxic and cannot be put in the house. Some people think that its smell is poisonous. In fact, these ideas are wrong, just a rumor. It is a relatively safe plant and will not cause harm to the human body. In addition, it has many other features that make it possible to put it indoors.

The second is its ornamental value. If you look at its picture, you will find that its overall posture is very beautiful. Its flowers are flirtatious and elegant; its leaves are bright green and are a good foil to the flowers. In addition to the appearance, it can also send out a kind of fragrance, which makes people feel refreshed and refreshed.

Finally, it purifies the surrounding environment. One of the important reasons why we put plants indoors is the environment. For this kind of plant, it has good functions of purifying air, absorbing CO2 and other gas components, absorbing radiation and so on.

Through the above, we already know some ways to take good care of the four seasons crabapple, so that friends who like it can plant a pot to decorate our home, but some friends have some confusion about its location, whether it can be put in the bedroom or not. In fact, the editor also said that the four seasons crabapple is non-toxic, so you can rest assured to put it in the bedroom.