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Rhododendron cultivation precautions:
1.The rhododendron's roots are as thin as a hair, and the thick taproots are few, and it is afraid of both dryness and wetness, especially heavy fertilizer. If you water too much, the roots will be soaked in water, too dry, the branches and leaves will shrink, and the leaf petals will fall off, which is a great threat to the plant, and as for watering heavy fertilizer, it will be life-threatening.
2.After flowering, the residual flowers must be cut off to avoid fruiting and consuming nutrients, and after the new branches germinate, the branches should be properly thinned and left according to the growth of the plant.
3.Rhododendron is best planted in muddy pots, because the mud pots absorb water and breathe, which is conducive to the growth and development of the root system and the flourishing branches and leaves.
4.Potted azaleas should be placed on the southeast balcony in particular, and should be ventilated and moved as little as possible. If it is not ventilated, it is susceptible to black spot disease and a large number of leaf litter.
5.The rhododendron should also have moderate light requirements, and avoid direct light in summer. Fertilization should be mastered thin fertilizer diligently, can be light, and apply organic compound fertilizer on the potting soil once a month.
Potassium dihydrogen phosphate was sprayed every 10 days for extra-root fertilization. Water at the right time, and you can also add vinegar to the water to increase acidity.
6.Timely thinning of buds and leaves, remove part of the flower buds and leaves that have grown too much and too densely, so that the air can circulate and nutrients will be concentrated in the flower buds. After the flower buds are formed, it is necessary to increase the nutrients and apply more phosphorus and potassium fertilizers in an appropriate amount, otherwise the flower buds will be transformed into leaf buds.
7.The main reasons for the loss of leaves and non-flowering of azaleas are: too strong direct light in summer, severe cold and frostbite, too much watering, too much fertilization, too long time indoors, poor air circulation or dark and damp places, drenched acid rain, etc., so these situations should be avoided during the maintenance process.
8.Turning over the pot and changing the soil, do not need to be carried out every year, generally once every 2 to 3 years, try to damage the roots, the time should be after the flower or autumn, and spray Tobuzin at the same time to prevent diseases.
9.The insect pests of azaleas are mainly red spiders, aphids, etc., which can be sprayed with pyrethroids, etc., and the effect is better, such as not dying after three days, spray again. The disease is mainly melanoma, which is caused by a stuffy environment and lack of light, and measures can be taken to promote air circulation on the one hand, and spray Bordeaux liquid and carbendazim on the other hand.
10.The main propagation method of azalea is cuttings. Before and after the selection of new branches, 5 cm to 10 cm long, cut at the fork point, peel off the lower leaves, leave 3 to 4 top leaves, insert 1 3 of the branches into the soil, spray enough water, cover with plastic film.
Usually to strengthen management, transplant after one year.
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If these 4 points are not done well, the azalea leaves and flowers will fall out, and in the end only pots will remain.
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Although the rhododendron likes shade, it will gradually wither and fall leaves if it is placed in a closed environment without scattering for a long time.
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The azaleas have dried up and lost their leaves, so hurry up and remedy it this way, otherwise the situation will be worse.
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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.
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1. Shade: Rhododendron leaves are yellow, and shade nets need to be built above the plants for shade. 2. Temperature:
Rhododendron is neither cold nor heat tolerant and needs to control the ambient temperature at around 20 degrees. 3. Watering: Wait for the surface of the soil to turn white before watering to avoid rhododendron rot roots.
4. Fertilization: Apply well-rotted organic fertilizer to the rhododendron to make it grow new leaves.
1. Block strong light
Rhododendron leaves wilt, it is likely to be caused by too much light, it likes to grow in a semi-shady environment, is a plant that is not tolerant to strong light exposure, so at this time it is necessary to shade the strong light, it is best to move the plant to a place with scattered light to maintain, so as to improve its wilting phenomenon.
2. Suitable temperature
Rhododendron likes a cool climate environment, its optimal growth temperature is about 20, if the temperature is too high or too low, the rhododendron leaves will wither, so we need to do a good job of temperature control measures for it, in summer to maintain it in a cool and ventilated place, in winter to move to a warm place indoors to maintain.
3. Reasonable watering
Rhododendron leaves appear wilting, and may be caused by too much or too little watering, it likes moisture, but is not resistant to waterlogging, so at this time we should water it reasonably, it is best to water it according to the dryness and humidity of the soil, keep the soil slightly moist, pay attention to the use of alkaline water when watering.
4. Correct fertilization
Rhododendron leaves appear wilting, it may also be caused by improper fertilization, it is a fertilizer-loving plant, but can not be applied to it raw fertilizer or thick fertilizer, at this time we had better replace it with new soil, and then fertilize to apply rotten fertilizer, but also to master the principle of thin fertilizer diligent.
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It is not uncommon for rhododendron leaves to dry up, mainly due to low watering, excessive fertilizer, scorching sun exposure, and poor temperature and humidity. In addition, diseases and insect infestations can also cause leaf drying, which is rare but real. Next, we will start from the cause of the wilting of azalea leaves to find corresponding solutions.
1. Improper watering.
Too dry an environment is very detrimental to the growth of rhododendrons, after all, the demand for water is not low. Therefore, when the leaves of the rhododendron dry up due to lack of water, we must pay attention to the timely supply of water. Note that watering the rhododendrons is not as much as possible, just dry and wet.
Whether the soil is dry for a long time or there is standing water, it is not conducive to the normal growth of the plant.
2. Improper fertilization.
Any plant needs a supply of nutrients in the process of growth, and rhododendrons are no exception. The nutrients of the rhododendron not only depend on their own absorption, but also need to be fertilized at the right time and in the right amount. However, many flower friends often cause rhododendrons to burn their roots due to too much fertilizer when fertilizing, so the leaves dry up.
Therefore, we must pay attention to the control of the amount of fertilization for rhododendrons, and apply thin fertilizer frequently, which can not only ensure that the fertilizer nutrients are sufficient but also will not burn the roots due to the large amount. Don't panic if there is too much fertilizer, change the soil or dilute the roots in time, and clean up the excess fertilizer in time to improve the growing environment.
3. Exposure to the scorching sun.
Light conditions are essential for the growth of plants, and lack of light is easy to breed bacteria. However, it should be noted that when exposed to sunlight, the rhododendron may be burned and the leaves will dry up. Therefore, sunlight should be properly shaded under the scorching sun.
4. The temperature is uncomfortable.
Rhododendron generally grows best between 15-30 years old, with high temperatures in summer causing the leaves to dry out, and temperatures too low in winter affecting their growth.
Therefore, in the summer season, it must be shaded and ventilated, and the humidity can be increased by spraying to control the temperature. Keep warm during the cold winter months to prevent frostbite.
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Rhododendron will wilt and lose leaves, which has a lot to do with the soil you breed or daily maintenance, as well as the weather.
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Rhododendron has extremely high requirements for temperature and humidity, and if it does not meet certain standards, it will affect the growth of azaleas and cause the leaves to dry up. Rhododendron loves the sun, and if you don't see sunlight for a long time, the leaves of the azalea will start to dry up.
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Salinity, drought, dampness, root rot, dry rot, net bugs, nutrient deficiency, etc.
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Flowers bloom and fall from time to time, and so do azaleas.
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You see, if there is not enough water, if the water is too big, it will wither and lose its leaves.
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Plants, like animals and humans, have a life cycle, and the withering and falling of flowers and leaves is a natural phenomenon of life.
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Rhododendron leaves wilt, may be caused by too little watering, need to water the plant once, to promote its vigorous growth, and use sharp scissors to cut off all the rhododendron wilted and yellowed leaves, so as not to lose excess nutrients, and to place the rhododendron in a scattered light, to avoid the plant from strong direct light.
1. Replenish water
Rhododendron is a water-loving plant, when breeding rhododendron, if the watering is too little, it will lead to poor plant growth, which makes the leaves of the rhododendron wilt and yellow, you need to water the rhododendron once, you can water 1-2 times every other week, and regularly spray water mist around the rhododendron to improve the humidity of the air.
2. Pruning
When breeding rhododendrons, you need to prepare a sharp pair of scissors, and then wipe the scissors with alcohol cotton to disinfect and sterilize them, and then use scissors to cut off the yellowed leaves of the rhododendron to avoid the loss of excess nutrients, and spray carbendazim on the fracture of the rhododendron to avoid rotting the wound of the plant.
3. Suitable for light
Rhododendron needs sufficient light during the growth process, but it is not resistant to exposure to the sun, when breeding rhododendrons, it is necessary to place the plant in a bright place in spring, autumn and winter, so that it can receive all-weather natural light, and in the middle of summer, it is necessary to do a good job of shading measures for the rhododendron to avoid sunburn.
4. Maintenance management
When maintaining rhododendrons, it is necessary to prune the branches and leaves of the plant regularly, which can cut the branches and leaves that grow too densely to promote the healthy growth of the rhododendron, and in the peak season of rhododendron growth, it is necessary to apply a mixture of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer to provide the rhododendron with the nutrients needed for flowering and make its flowers more brilliant.