How to raise azaleas to prevent rhododendron from losing leaves and yellowing leaves

Azalea although good-looking, but improper maintenance, it is easy to appear "one year flower, two years yellow, three years leaves off light" situation. Azalea conservation summary has "seven happy seven fear" experience formula, respectively, for one, like acid afraid of alkali. Second, like wet fear of waterlogging. Third, like cold and afraid of heat. Fourth, like half shade afraid of strong light. 5. I like small winds and fear strong winds. 6. Love humidity and fear dryness. Seven, like fertile fear big fat. How to raise azaleas, in order to prevent the leaves or yellow leaves it? The following flower music and you share control knowledge.

How to prevent azaleas from losing leaves and yellowing leaves

1. Environmental transformation is not suitable for deciduous leaves

Most of the rhododendrons purchased from the flower market were cultivated in greenhouses. After purchasing them home, they changed their growth environment and did not adapt to them. They often fell leaves or even died.

Solution: The newly purchased rhododendron should try to keep the air humidity, properly shade, keep the basin soil moist, need air circulation but not cold wind blowing directly, and do not rush to change the soil and fertilize, so as to make it safely through the adaptation period. Winter should be given sufficient light, indoor maintenance as far as possible under the south window, the ambient temperature should not be lower than 5 degrees. Do not change the place at will to avoid sudden changes in temperature.

2. Unsuitable deciduous leaves in basin soil

Solution: Azalea like slightly acidic loose soil, if the pot soil is alkaline or long-term irrigation of alkaline water, it will inevitably affect the absorption of nitrogen, iron and other elements by the roots, resulting in iron deficiency and other causes of leaf yellowing. In order to prevent yellowing caused by iron deficiency, you can irrigate with 0.2% ferrous sulfate water every day, and the leaves will not turn yellow or even wither. In addition, adding a few drops of rice vinegar to the watering water can also increase soil acidity.

3. Improper water and fertilizer

Solution: Azalea roots delicate, afraid of drought, afraid of waterlogging, but also afraid of large fertilizer. Such as insufficient watering or leakage of irrigation, will cause wilting and drooping leaves, severe leaf tip withered coke, leaves and buds a large number of shedding. If too much watering, soil too wet for a long time, will make the root system suffocation rot, easy to lead to yellow lower leaves fall off, serious leaves almost stripped. Too thick fertilization or application of undecomposed raw fertilizer will cause fertilizer damage to plants, light leaves turn yellow, leaf tips wither, branches shrink, a large number of leaves, heavy whole plant death. Once fertilizer damage occurs, water should be increased to make fertilizer flow out of the drainage hole L, and if necessary, the pot should be turned over for soil.

4, deficiency yellow

Solution: When the plant is deficient in iron or magnesium, it will cause the azalea veins to lose green, but the veins are still green; when the sulfur is deficient, it will also cause the young leaves to turn yellow, and when it is serious, it will turn white and spread to the old leaves. Leaf analysis and soil analysis can determine what elements are lacking, and then supplement the corresponding elements. Iron deficiency is usually the most common, as long as the leaves turn yellow is considered to be caused by iron deficiency, but sometimes it is not the case.

5. Poor root absorption

Solution: When the temperature is high in summer, the chlorosis of azalea leaves is especially obvious, and most of them improve or restore green after autumn. Although the symptoms are similar to iron deficiency, iron supplementation has no effect on it. Root protection and root protection measures should be taken for this kind of yellowing phenomenon. To maintain a higher temperature in winter, summer high temperature to shade, and the surrounding environment to cool down, maintain good ventilation, promote the growth and development of healthy plant roots.

6. Light

The cuckoo likes light but fears the sun, likes ventilation but fears the strong wind. Summer placed in the hot sun, spring (especially early spring), autumn placed in the tuyere, will lead to a large number of leaves.

Solution: attention should be paid to the azalea placed in the morning and evening there is sunshine and shelter from the wind cultivation.

7. Physiological defoliation

Solution: flowering is too dense, nutrition is not timely supply or new leaves will also take off the old leaves, is a normal state, through the normal replacement of soil fertilizer can be solved. Domestic rhododendrons generally bloom and sprout new leaves in April-June, and old leaves will fall off. After flowering, pruning and shaping, cutting off dense branches, cross branches, thin branches, drooping branches, excessive branches and diseased branches, both conducive to ventilation and light transmission, strong branches, but also reduce deciduous leaves.

Time: 2019-04-24 Click: