Reason: The growth environment of azalea just bought suddenly changes, especially the sudden change of air humidity, which is easy to cause the leaves to fall off.

Solution: Put the newly bought azaleas in a relatively cold environment for a period of time.

Step 2 air dry

Reason: Rhododendron requires high air humidity, the humidity in the greenhouse is generally 70-80%, while the humidity in the home is generally a little more than 20%. In this way, if the air is too dry, azaleas will reduce water evaporation by falling leaves.

Solution: increase the air humidity around azaleas, either by spraying or by putting a basin of clear water around them.

3. Water too much.

Reason: Too much water will lead to root rot of Rhododendron, which will further aggravate its defoliation.

Solution: reduce watering and wait until the soil is dry before watering.

Extended data:

Rhododendron cultivation method:

1, soil.

Rhododendron likes weak acid soil with loose, fertile, good drainage and permeability. I don't like sticky and alkaline soil. So we can mix humus soil, peat soil and sandy soil according to the ratio of five to two to three as the soil for raising it. Before planting or transplanting, a small amount of bone meal can be mixed in the soil to increase the mineral content in the soil.

2. temperature.

The optimum temperature for rhododendron growth is 15-25℃, and it should be grown in this temperature range in spring or autumn. When the temperature is high in summer, we should pay attention to temperature control, and the maximum temperature should not exceed 32℃. When the temperature is low in winter, it should be moved indoors in time to keep the temperature above 5℃.

3. water.

Watering azaleas is a technical job. If you water them too much, their roots will rot easily; If you water them too little, their leaves will dry up. Generally speaking, we only need to keep the soil moist in early spring. In late spring and early summer, when you are ready to bloom, the water demand will increase greatly, so water it more. In summer, the temperature is too high. Besides watering, spray some water on the plants. When the weather turns cold in autumn, it is necessary to control the water moderately and make the soil a little dry. After it goes into hibernation in winter, it is necessary to reduce watering.

4. Precautions.

1, pruning. Rhododendron grows faster and is easy to grow densely, which will lead to many internal branches and leaves not seeing light and unable to grow healthily. So trim it in time, which will not only look better, but also be healthier.

2. Change pots. The growth of rhododendron needs to consume nutrients in the soil, and the nutrients in the soil will be absorbed by it after one or two years. At this time, we need to change into new soil rich in nutrients in order to continue to grow healthily.

References:

Baidu encyclopedia-azalea