Why do azalea leaves grow very light and undergo other changes? How to help a flower?

Why do azalea leaves grow very light and undergo other changes? How to help a flower?

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Azalea is one of the finest plants in the house. Very often it is also called "Rosewood" and belongs to the rhododendron family. Its evergreen leaves and gorgeous flowers can delight the owner of the house even in winter. In addition, it is observed that the plant is very delicate and quite capricious to care for.

It is worth considering its content carefully in order to prolong the life of the flower. Usually the stems are pruned and pinched to achieve the best flowering and duration. This procedure should be carried out starting in May.

The role of leaves in the life of rhododendron

The leaves of the plant have important functions for the flower. With the help of large and thin leaf tissues, Azalea produces organic substances necessary for life. Photosynthesis takes place with the help of sunlight. Leaves evaporate plant moisture and metabolize minerals.

Depending on the seasons of the year, Azalea leaves can become overgrown with fungi and diseases. Most often, it is the unhealthy appearance of the leaves that indicates the presence of diseases and parasites on the flower. Depending on how the color of the plant changes, it is possible to determine the disease of the flower.

The most common diseases of this part of the plant

Azalea leaves are very moody and susceptible to fungal diseases. Diseases can occur for several reasons. Most often, improper care is common.

External factors strongly influence the flowering and lifespan of the plant. High air temperature and a lot of light can cause some diseases. And also frequent and improper watering can destroy the bush or develop mold and parasites in it.

Consider the common diseases of Azalea.

  • Azaliva moth is an interesting pest. It is difficult to notice it at once, it is possible to determine it only by signs. The leaves gradually dry out, break and fall off (how to reanimate an azalea if it has dried up?). But after the caterpillars grow, they move to healthy leaves, twist them and continue their reproduction.
  • Dangerous viral disease called "greenhouse whitefly", it affects the leaves of Azalea. There is a sooty fungus on them, which is a carrier of diseases in flowering plants. Also, by the signs of leaves, you can determine the presence of an earth mite in a plant.

    Young leaves fold inward like a boat, and instead of ordinary buds, small numerous formations are formed. If a flat red tick is wound up, then the leaves of the plant begin to turn brown, wither sharply and crumble.

  • The most common are signs of Fusarium, when the stem withers, becomes yellow, and the roots are pink. With such symptoms, they are treated with a 0.2% foundationol solution.
  • The signs of Verticellosis can be recognized by the dark base of the plant.
  • Alternaria is manifested by spots on the leaves of brown color. With this disease, the plants must be treated with Bordeaux composition.
  • Septoria disease is characterized by red-yellow color spots and black blotches inside the leaf. This is possible from lack of light and high humidity.
  • Phylosticosis occurs when dark brown formations or gray circles appear on the leaves of the azalea.

You can find out about the diseases and pests of azaleas in this material.

What do the affected leaves look like in the photo, why does this happen to them and what to do?

Next, you can find out about the reasons for the changes in the leaves of the plant and look at their photos.

Grows very light or too pale

To help a plant whose leaves have begun to fade or become light green, you need to figure out why this happened. The most common the reason for the very light shade of Azalea leaves is an ailment such as chlorosis. It can be caused by several factors: a lack of iron, magnesium, nitrogen, as well as a lack of other important nutrients.

Treatment can be boiling the water to soften it, and adding citric acid to the irrigation water, especially if it is raw.


Rhododendron leaves can turn red from excess sunlight or from oversaturation with iron from bait. It is best to stop the fertilization period and move the flower to a darker and cooler place. Observe the condition; this phenomenon may also be associated with a recent flower transplant.

There is a possibility of infection with an earth mite, if so, then it is necessary to treat the roots with chemical compounds and transplant into new soil.

Covered with white bloom

A pale bloom appears on the inside of the leaf, after which it may fall off. The cause of plant disease will be improper watering and temperature conditions. Such a manifestation on the leaves is called phomosis.

Prevention and treatment occurs by spraying a solution like Topsin-M 0.1%. It is necessary to process Azalea three times, after ten days.

Curl inward

Curling and falling of leaves indicates acute phytophthiasis. Due to unfavorable external factors, such as high air temperature and high humidity, the plant throws off the foliage.

It is possible to avoid the consequences if you increase the air permeability of the soil, for example, loosen it, and also treat the leaves with boric acid. In rare cases, there may be aphids or caterpillars on twisted leaves, they are easy to find and it is recommended to immediately remove them with a cotton pad and treat the plant with a special chemical composition from parasites.

Turn brown and fall

Necrosis is the name of this period of a flower's life. In some species of Azalea it usually occurs in the winter after flowering. Necrosis is manifested by the appearance of a brown tint on the leaves and the death of the leaf.

It is best to leave the plant alone in this state. This means moving to a cool place, leaving without watering and feeding.

Attention! As soon as new leaves begin to appear, then the dormant period is over and everything is fine, but if rotting and falling off continues, then most likely the flower cannot be saved.

Get dark

It happens that dark spots appear on the Azalea and cause trouble for the plant. Most often, damaged leaves with such spots are removed and treated with a 0.2% Fundazole solution. It helps to remove the symptoms of a plant disease such as phylosticosis.

Possible problems with blackening of the leaves, may be parasites. These are ticks and fungal viruses. Before starting treatment, you must first get rid of them with chemical compounds, and then start treating them with drugs. In some cases, it is worth protecting the flower from other plants, so as not to infect with the presence of parasites.

Read about whether a dying azalea can always be saved and how to revive the plant here.

Prevention of various diseases

  1. For a good and long flowering of Azalea, it is necessary to observe the correct irrigation regime. The water should be at room temperature or 1-2 degrees higher. This will help the plant to better nourish and absorb moisture. It is best to use soft boiled water.

    For nutrition and maintenance, the easiest way is to add lemon juice or dilute citric acid to irrigation water. Proportions approximately 3 drops per liter of water.

  2. In addition to watering, you should not overcool or dry out the flower in the sun. It is important to observe a comfortable room temperature regime for the plant. Watch for soil replenishment, you can purchase additional minerals in specialized stores. Ionize the air in the room with the plant.

    It is important not to flood the flower and carefully observe so that mold does not appear, it can contribute to the appearance of mites in the plant, which will destroy the flower.

  3. The transplant is also very important. Usually, flower growers advise replanting the plant after its first flowering. The surest way not to damage the roots is to use the transplant method as a "transfer". A feature is the preservation of an earthen coma at the roots. Azalea's roots are very fragile and thin, so a careful attitude is the key to the health of the flower.

    Do not transplant into deep pots. Young plants are transplanted once a year, while adults are transplanted once every three years. When transplanting, it is worth removing dead stems, leaves and everything that does not look healthy in the plant.

Azalea is a beautiful plant. And the favorite of many plant owners. She, like a gentle capricious lady, pleases with a beautiful flowering and is fastidious in courtship. Therefore, in order to preserve beauty for a long time, especially during the flowering period of the plant, it is necessary to carefully observe the external changes on the flowers and leaves.

The best temperature in the room is no more than 12 degrees. The flower should be placed in a darkened room with a low room temperature, but not lower than 5 degrees. Abundant watering with soft water will preserve long flowering and delight the eye with beautiful buds.

Watch the video: How To Take Care of Azaleas (August 2022).