What s wrong with brown rhododendron leaves?

First, the light is too strong.

1. Reason: Rhododendron likes sunlight, but it can't tolerate long-term strong light exposure. If you put it in a position with too much light when raising it, it may cause the leaf tip to dry out and turn brown.

2. Solution: Cut off the leaf with serious problems, then move it to a softer position and maintain it slowly.

Second, the humidity is too low.

1. Reason: It is relatively moisture-loving. If the humidity of the place where it is raised is too low to meet its requirements, it may cause it to grow poorly, and the leaf tips will dry up and turn brown.

2. Treatment method: Spray some water around the plant often to increase the humidity of the air. It will be restored shortly.

3. Excessive fertilization.

1. Reason: If it is usually applied with foliar fertilizer and sprayed frequently. It may also have leaf dryness because it can't tolerate too much flower fertilizer.

2. Treatment method: cut off the leaves that are seriously discolored and completely dry, and stop fertilizing for a period of time. During this period, the leaves are often wiped with water, and they can be restored after a short time.

Hello, dark spots appear on rhododendron leaves, you have to find out the cause first. If it is caused by black spot infection, the leaves of the black spots can be removed and burned, and Tobuzin or chlorothalonil can be sprayed several times in a row. If it is caused by strong sunlight in summer, it can be moved to a cool and ventilated place.

If it is caused by too much watering and rotten roots, you can pay attention to reasonable watering, watering thoroughly, and the stagnant water should be promoted to drain. If it is caused by too much fertilization, it can be applied diligently with thin fertilizer, and too much fertilizer should be watered and diluted.

1. Infection with diseases.

Reason: Black spots appear on the leaves of the rhododendron, and it is necessary to determine whether it is infected with black spot disease, which is mainly caused by improper maintenance.

Solution: If it is determined that the disease is infected, in order to prevent the spread of the disease, you can first remove the leaves with black spots, gather them and burn them, and then move them to a ventilated place.

2. Avoid bright light.

Cause: Dark spots appear on the leaves of rhododendrons, or they may be caused by strong light exposure during the high summer temperatures.

Solution: It is required to pay attention to avoid light in summer, if it is exposed to strong light, you can remove the blackened leaves first, and then move to a cool and ventilated place.

3. Watered.

Reason: It needs to be watered properly to grow, and if the watering is not controlled, too much water can cause root rot, which in turn will lead to black spots on the leaves.

Solution: Pay attention to reasonable watering, as long as you water thoroughly, stop watering if there is too much water, actively promote the discharge of stagnant water, and if there are rotten roots, cut off the rotten part.

Fourth, too much fertilization.

Reason: It can't tolerate thick fertilizer, and if it is applied too much, it will lead to root burning and cause problems in the leaves.

Solution: Usually pay attention to thin fertilizer diligently, it is recommended to choose Ribery Yanwo water-soluble fertilizer, high utilization rate, good absorption, if there is too much fertilizer, it should be diluted by watering immediately.

There are two reasons for the dry leaves of azaleas, one is due to the weather and the other is due to care.

Rhododendron is not a sun-tolerant flower, and at noon, the light is very strong. If the azaleas are placed directly in the sun and no proper shading measures are taken, they are likely to get sunburned. Since the new leaves are more delicate than the price, there is a greater chance of being sunburned.

Proper shade can be provided, or it can be relocated to a cool, ventilated place, or under a tree.

Rhododendron prefers a moist growing environment, and if the weather is too dry, new leaves may dry up. As for the weather, it is also quite helpless, and all we can do is to create a humid environment as much as possible.

In addition, you can also spray more water mist on the leaf surface to artificially create a moist growth environment.

1. Replace the potting soil.

Because it prefers to grow in soft, breathable, well-drained acidic loam, but because of the application of alkaline water for a long time, it may cause the loam to become compacted and alkaline, so the root growth will be restricted and suffocated, causing the leaves to fall and die.

You can replace the potting soil inside and replace it with new culture soil to ensure that the pH value is smaller, or add Bika microbial agent to balance the pH value.

2. Increase or decrease light.

It is a semi-negative flower that generally needs shade in spring, summer and autumn, but in winter it needs to be exposed to sunlight, and if there is too little sunlight contact at this time, it will cause leaf loss. In the case of the scorching summer sun, exposure to the scorching sun can also cause this situation.

The right amount of light should be given according to the season, if there is no light, it should be moved outdoors, and if there is too much light, it should be placed in a cool place.

3. Adjust the temperature.

Temperature is critical for maintenance, once the temperature is above 30, or below 3 in winter, the plant will have a bad effect, the whole plant will change, and the leaves will naturally fall.

The position can be adjusted according to the weather conditions, and it is best to keep it at 15-25.

Rhododendron leaves may be due to these reasons.

Hello dear! 1. The soil is too alkaline, and the rhododendron prefers a weakly acidic soil environment. If alkaline soil and water are used for a long time, it will affect the absorption of nitrogen and iron by the roots, resulting in iron deficiency and oxygen deficiency of plants, and the lack of chlorophyll and yellowing and shedding.

The solution is to add a little ferrous sulphate to the pot to acidify the soil. 2. If the fertilization is too concentrated, it will cause fatal damage to the rhododendron, which is manifested as fallen leaves on the surface, but is actually a root injury. The folk proverb says:

Shiragen has strength. The yellow root is sick, and the black root is dying. "The solution is to check the root system, if the root system is yellow, it can be treated as soon as possible, and if it is blackened, it is already terminally ill and difficult.

Remove dry fertilizer, change the soil partially, do not replace it all, and do not wash the roots. Water several times a day, dilute the fertilizer, and place it in a sheltered place from scattered light, keep the environment moist, and slowly recover.

3. Rhododendron usually needs more than 12 hours of light to produce buds. However, the cuckoo has a certain selectivity to light intensity, prefers semi-shade, and is afraid of strong light. Exposure to strong light will cause a large number of leaves to fall in the rhododendron.

and even cause death. The solution is to move the cuckoo to a shady place. 4. Rhododendron with too much water likes moisture, is afraid of drought, and is not waterlogged, such as long-term water accumulation in the pot or long-term drought without watering, often resulting in a large number of fallen leaves.

If the treatment is not timely, only dead branches and leaves will be left soon, and eventually the plant will die. The solution is to change the potting soil to improve the potting soil conditions, promote the slow recovery of the root system, and breed new roots.

It is necessary to respect the habits of the rhododendron and conform to the habits of the rhododendron such as liking weak acidity, avoiding heavy fertilizer, being afraid of drought and flood, being afraid of strong sun, and being moist, so that the rhododendron can grow well.

I have a pot of rhododendrons next to me, which is a favorite flower, but when a friend buys a rhododendron home, it either has dry branches or dead leaves in the summer.

1. Lighting.

Rhododendron does not like strong light, the temperature in summer is relatively high and the sun is stronger, during this period you have to create an environment for it, put it in a shade place, the shade degree must be about 60%, if it is exposed to the sun, it is easy to appear the phenomenon of dry branches.

2. Watering.

To water the rhododendron, you must keep one water per day when entering the summer committee, especially when the balcony is covered with water, and after the water of the observation tray is gone, you can observe the soil again, and press the potting soil with your finger If you point to the next point, it is easy to cause the appearance of the whole plant leaves.

Because the root system of the rhododendron is a capillary root, it is particularly sensitive to water requirements in summer, and in case of water shortage, it is easy to cause the death of the whole plant.

3. Fertilization.

Rhododendron does not have strict requirements for fertilizer, and can be applied thinly and frequently, because the temperature is very high, and it is easy to hurt the roots.

4. Soil.

When planting rhododendrons, you must use loose humus soil, the original is not good with the compacted, the capillary roots of the rhododendron have very strict requirements for the soil, and the original soil with the compaction is very easy to accumulate water, resulting in root rot, and ferrous sulfate can usually be applied once a month.

The reason why rhododendrons shed their leaves.

1. Soil pH.

Many flowers prefer acidic soils, and so do azaleas. If the azalea is allowed to live in alkaline soil and no timely measures are taken, the rhododendron leaves will turn yellow and dry up, which is why the azalea loses its leaves.

2. Lack of iron in the soil.

If the lack of iron in the soil where the rhododendron is cultivated will hinder the synthesis of chlorophyll, resulting in yellowish-white leaves and more pronounced young leaves that have just grown, which is also the reason why the rhododendron loses its leaves if it persists for a while.

3. Poor ventilation.

The reason why the rhododendron loses its leaves is that the root system of the rhododendron is very slender, if the potting soil is loose and the air permeability is not good or the long-term watering is too frequent and the ventilation is not good, the root system of the rhododendron will be damaged, causing the azalea leaves to be sluggish and fall off.

Temperature and light requirements for rhododendron farming

Potted rhododendrons are generally potted in spring from March to April, but can also be potted in autumn. When potting, it is necessary to transplant with soil, and after planting, water thoroughly and place it in the shade.

The northern potted rhododendron is generally moved indoors for wintering in early to mid-October, and placed in a sunny place after entering the room. At the beginning of the room, attention should be paid to opening the windows frequently for ventilation. In winter, the room temperature should be about 10, and it should not be too high, otherwise, the physiological activities of the plants will be strengthened, a large amount of nutrients will be consumed, and the flowering and growth of the next year will be affected; At the same time, adequate light should be given.

After mid to late April of the following year, the sun is softer at this time, and it should be properly shaded around noon, and it must be moved to a cool and ventilated place for maintenance after summer. Because azaleas are negative flowers, they need to be maintained under the shade in spring, summer and autumn, especially in summer under the scorching sun conditions for a long time, which is easy to cause yellowing of branches and leaves, stagnation of growth, and death of the whole plant. In autumn, the daily light hours should be gradually increased, and the shading should be stopped at the end of autumn.

There are two reasons for the yellow leaves and dead leaves of rhododendrons, one is that the sun is too much and the rhododendron loses too much water; The second is that the rhododendron is not completely potted, and the transpiration is large, and the rhododendron will protect itself by shedding leaves out of self-preservation.