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Through human interference.
1.There is a phenomenon of new branches sprouting but not flowering. We can artificially interfere with its vegetative growth to enhance reproductive growth and promote flowering.
2.Do not apply nitrogen-containing fertilizers before flowering, only increase phosphorus and potassium fertilizers, adjust the ratio of phosphorus and nitrogen in the body, avoid excessive vegetative growth, and promote flower bud differentiation. Cut off the long branches and inner branches, and remove two or three of the branches with four or five new shoots, so that the branches and leaves inside the crown are reduced, the sunlight is increased, and the carbohydrate assimilation is promoted to enhance reproductive growth.
3.Control watering, so that the potting soil is moist and the pot surface is dry. In late autumn, the time of overwintering in the human room is postponed, and in the absence of heavy frost or sharp cooling, it is placed outdoors as much as possible to control the shade of new branches and facilitate flowering.
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Rhododendron only grows leaves and does not flower, it may be that nitrogen fertilizer is used too much, and it grows in vain, so it is necessary to apply less nitrogen fertilizer and more phosphorus and potassium fertilizer, and some Bika potassium dihydrogen phosphate can be sprayed to promote flowering.
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If the rhododendron only grows new leaves and does not bloom during the flowering period, then it may be caused by unsuitable light, generally need to be placed in mild sunlight maintenance, do a good job of shade and sun protection in summer, if the potting soil is not suitable for the growth of the potting soil, too much fertilizer needs to be pruned in time, and need to be irrigated to dilute the fertilizer, to avoid the plant growth, so that it can bloom.
Rhododendron needs to be placed in the sun to maintain, if the rhododendron leaves do not bloom, then it may be caused by light discomfort, under normal circumstances, it needs to be placed in the sun to maintain, and in summer can not be maintained in strong sunlight, and in winter it needs to be fully sun-drenched, so that it can bloom beautiful flowers.
Rhododendron also has higher requirements for potting soil, and if the potting soil is not suitable then it will not bloom. At this time, it is necessary to replace it with potting soil suitable for growth, and can be mixed with humus, peat soil and organic fertilizer as a substrate to make it grow better, so as to promote it to grow new leaves and flowers.
Generally, rhododendrons need to provide them with sufficient nutrients, but if they are fertilized too much, then the azaleas will grow poorly, on the contrary, they will not grow new leaves, so they need to be pruned immediately, and they need to be poured water into the potting soil.
In fact, the cold tolerance of rhododendron is not strong, if the low temperature in winter does not do a good job of cold measures, accidentally frostbite its plants, then the rhododendrons only grow leaves and do not bloom during the flowering period, need to be immediately fertilized to it, and need to be placed in the sun school maintenance, under normal circumstances, the temperature needs to be controlled at more than 5 in winter.
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Excessive fertilization, too much nitrogen fertilizer will make the rhododendron unable to bloom normally, after flowering, it is necessary to stop applying nitrogen fertilizer, and need to change to an appropriate amount of diluted phosphorus and potassium fertilizer; Lack of light and insufficient light will also make azaleas unable to bloom normally, and they need to be transferred to a bright environment for maintenance; Too many new shoots, too many new shoots will cause the azalea to consume too much nutrients in the body to not flower, and the excess new shoots need to be pruned to reduce the consumption of nutrients.
Rhododendron has a high demand for fertilizer during the growth period, but it is not tolerant of thick fertilizer, and if too much fertilizer is applied when breeding rhododendrons, it will cause the rhododendron to have only leaves and not flowers. Therefore, nitrogen fertilizer should be stopped during rhododendron flowering, and only an appropriate amount of diluted phosphorus and potassium fertilizer should be applied to supplement nutrients to promote flower bud differentiation of rhododendron.
If there is a lack of phosphorus and potassium fertilizers during the growth of rhododendrons, the flower buds hidden in the leaf buds will not be formed, so that the azalea cannot bloom properly. Therefore, when the rhododendron bud has just grown, it is necessary to apply the diluted phosphorus and potassium fertilizer every half a month, so that the rhododendron can grow the flower bud smoothly, and the flower bud can bloom soon after the flower bud is formed.
Rhododendron has a greater need for light during the growth period, and the lack of light will not produce enough nutrients to promote the growth of flower buds, and the rhododendron will not be able to grow flower buds. At this time, the azaleas need to be transferred to a bright environment for maintenance to ensure that the nutrients are sufficient, so that the flower buds can form as soon as possible.
If there are too many new buds, it will also cause the nutrients in the azalea body to be consumed too much, and then the flower buds cannot be conceived normally and cannot bloom normally. At this time, it is necessary to erase the excess sprouts and reduce unnecessary nutrient consumption so that the azaleas can bloom smoothly.
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If the soil is silted, it will make the root system unable to absorb nutrients or water well, and the water storage of rhododendron leaves is relatively low, so there will be leaf dropping and not growing new leaves, so you need to change the soil immediately. The temperature is too high and too low azalea is suitable for growing in a warm environment, the suitable temperature for growth is 12 25, if the temperature in summer exceeds 35, it will be in a dormant state, then it will naturally appear that does not grow new leaves. In this way, you don't need to worry too much, you can move it indoors to a cool place to breed.
The temperature in winter is relatively low, and if the temperature is lower than 0, it is easy to cause frostbite, so not only does it not grow new leaves, but it may freeze to death directly. Then it needs to be taken to take temperature measures, as long as the temperature is not lower than 10, it can be transported to make it safe for winter. Root rot rhododendron itself likes to grow in a humid environment, but avoid stagnant water, if it is watered frequently, it is easy to cause rot in the root system, then naturally the leaves will not grow, or even die directly.
Then you need to immediately repot the side shed, and then prune off the rotten root system, disinfect and sterilize it in the soak carbendazim, and then pot it directly.
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Reasons why azaleas only grow leaves and do not bloom:
The potting soil is too dry and too wet.
Insufficient fertilizer or too much thick fertilizer is applied before flowering.
Insufficient fertilizer causes the flower buds to wither and dry up.
Put the summer cuckoo in an room with too high a temperature, and the young shoots will rob the flower buds of nutrients.
Rhododendron is a deciduous shrub and deciduous shrub of the Rhododendron family. There are about 900 species of rhododendrons in the world. China is the country with the largest distribution of rhododendrons, with more than 530 species, and rhododendrons are one of the top ten traditional flowers in China.
Rhododendron is a deciduous shrub, 2 7 m high; The branches are generally many and slender, but there are also rare and stout branches, the national 5A-level scenic spot "Baili Rhododendron" preserves the most primitive and ancient rhododendron forest, and the rhododendron here has always been known for its large flowers, gorgeous flowers and large trees.
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1. The roots of the rhododendron are as thin as a hair, and the thick taproot is very small, and it is afraid of both dry and wet, 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 the flowers, the residual flowers must be cut off to avoid fruiting and consuming nutrients, and after the germination of new branches, appropriate thinning of branches should be carried out according to the growth of the plant.
3. Rhododendron is most suitable for planting 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 branches and leaves are luxuriant.
4. The location of potted azaleas should be particular, generally placed on the southeast balcony, 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 light requirements of the rhododendron should also be moderate, and direct light should be avoided 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.
The rhododendron leaves are dry and black, and if you raise them in this way, they will soon turn back to oily green and bloom more.
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Rhododendron is maintained in this way, and the leaves are black and shiny and not yellow.