Shades of azalea diseases: why do the leaves grow very light or even change color and shape?

Plants play a very large role not only in the animal, but also in the plant world. Only thanks to plants can a person breathe. Plants absorb carbon dioxide, while releasing oxygen, which allows the whole organic world to breathe.
An important organ in a plant is foliage. It is through them that gas exchange occurs. Therefore, when the plant begins to hurt, the color of the green mass also changes.

Why does foliage play an important role in plant life?

Leaves play an important role in plant life. One of the most important functions is the formation of organic matter. Flat, but at the same time a large plate, helps to better capture sunlight. In the cells of the main tissue of the leaves (or as the pulp of the leaves can call it), a large number of chloroplasts are contained, the process of photosynthesis proceeds in them, during which organic substances are formed.

Plants evaporate water. Water flows through the conducting system from the roots and to the very top of the plants. This ensures the flow of minerals.

Gas exchange is also carried out between the air and the plant itself. The oxygen that comes in is used for respiration, and carbon dioxide for metabolism.

No matter how trite it may sound, but plant diseases are caused by fungi, bacteria and viruses. The most common diseases, from season to season, will vary due to weather conditions.

The most common rhododendron diseases

1. Powdery Mildew The disease can rapidly develop in a warm and dry microclimate. The main symptoms: a white, powdery coating appears on the cuttings, the leaf begins to darken.
2. Downy mildew. The disease affects the leaves of plants, on the outer part dirty yellow spots, and on a on the inside light gray in the form of plaque. If the plant is not a year old, then it dies, and if it is older, then there is a chance of salvation.
3. Chlorosis. Light yellow spots appear, which are caused by a deficiency of chlorophyll. About why azalea can still turn yellow, we wrote here.
4. Dropsy. Occurs with poor quality care for the plant. On the inside of the leaf, dark growths form.

Photos of sick leaves and tips on what to do to cure them

Very bright

The causes of chlorosis and why very bright leaves grow, may be:

• lack of iron;
• magnesium
• nitrogen or other nutrients.

Even if there is a lack of iron, and you were advised to spray with ferovite, then you should not expect quick results. In order to cure chlorosis, you need to soften the soil by boiling and acidifying water with lemon juice, always feed with complex fertilizers with microelements so as not to rack your brains what is missing and what is in excess.

If blush

Septoria is a fungal disease in which azalea leaves fall. First, red spots appear on them, which gradually increase, and soon generally fall off. In order to cure the plant, it can be treated with boric acid as well as other means.

Too pale

When asked why rhododendron leaves turn pale, we can say that the cause of light green foliage, as in the first case, is chlorosis. As mentioned earlier, it can be called:

• lack of iron;
• magnesium
• nitrogen or other nutrients.

Twist inward

If twisting has been noticed, the leaves dry and fall off - signs of late blight. It appears due to increased humidity and high temperature in its habitat. The plant is treated, it can be treated with both boric acid and other means, it is also worth increasing the air permeability of the soil.

Brown and fall off

With a sharp decrease in temperature, the main axis of the leaf dies off in azalea. Top begins to acquire a brown tint, which signals the appearance of necrosis. In nature, there is a variety of azaleas that, after flowering, dry and fall off. In most cases, this occurs in winter, when the air temperature changes quite sharply.

The treatment is quite simple:

1. Move the flower to a cool one.
2. Watering is reduced.
3. Top dressing does not make.

The resting period of azaleas ends with the advent of new leaves. If the flower does not release new leaves, but the old ones continue to fall, you need to rethink your care for azalea. There is a chance that it will not be able to cure her. Precisely because a sufficiently large number of flowers can not tolerate frost, florists recommend frost-resistant varieties plants.

Why azaleas can dry and fall leaves is discussed in a separate article.

Covered in white

It happens that on the reverse side, you can find a white coating, after which they fade and fall. The reason is phomosis, most often it appears with improper watering of the plant and violation of the temperature regime in the room.

Darken over time

Often, flower growers notice that the azalea gradually turns black. What is the problem? The formation of dark spots, from which sporangia balls fall, means that this flower is ill with phylosticosis. To help the plant, alternately apply a 0.2% solution of "Fundazole", and the damaged leaves are destroyed.

Read here what to do if the azaleas turn black and fall off.

Prevention

It would be regrettable, but we all and plants are living organisms. And when something is missing for us, then we begin to get sick, and for the fact that the plants are not sick, we need to take care of them. For prevention, it is necessary to transplant plants on time, feed them with various minerals.

Further care

Leaving requires a lot of effort, but the result is worth it. Azalea impresses with its grace and splendor of flowering. Further plant care is as follows:

1. Maintaining the right temperature. The optimum temperature is +5 degrees so that the kidneys open.
2. Proper watering. The colder the room, the less often you need to water the flower, the warmer the more often. This is due to the fact that the homeland of the flower is a country with a humid climate.
3. The right lighting. Although azalea loves light, it needs to be protected from a lot of sunlight. It is best that the azalea be in a room with diffuse lighting.

In conclusion, we can say that it is thanks to plants that all living organisms breathe. It must be remembered that only thanks to people does the plant become sick, and only thanks to us does it recover. It all depends on the person, on his attitude to the plant!

Watch the video: Rainbow Connections: The Language of Colour (November 2024).