Why Are My Azalea Leaves Dropping?

Last Updated on November 14, 2022 by Stephanie

Azalea is an attractive plant due to its attractive appearance. Gardeners who live indoors tend to grow it to create a beautiful flowering plant.

The plant is easy to maintain, however issues can occur. The dropping of leaves from Azalea is among the most common issues that gardeners in the indoor space face.

The most likely causes for the dropping of azalea leaves could be due to overwatering or nutrient deficiencies lighting, humidity, or. Additionally, excessive watering insects, diseases, or even a pest infestations can cause drop of azalea leaves.

Continue reading to learn some more details about the reasons for the azalea leaves falling and the best way to solve the issue.

In addition, I will inform you into ways to prevent this from occurring.

Causes of Azalea Leaves Dropping

Indoor azalea demands regular care. Dropping of leaves is the main reaction of an azalea to errors.

When you notice the first signs of wilting or falling leaves, you must identify the root cause and attempt to stop the cause. Lets look at how you can accomplish this.

azalea flowers

1. Overwatering

Are you giving your azalea way too much water? The primary reason for the leaves of azalea dropping is waterlogging. Azalea requires regular and moderate watering , but excessive watering can result in damage to the Azalea.

In the event of excessive moisture, the tips go black, and then the leafy plates are affected and leaves drop off. Due to excessive moisture, not just the leaves, but also the stems also change hue. They start to darken and then dry out.

How to fix

When the leaves emerge, cut down on your watering. Azalia dislikes hard water.

Make sure to use filtered or settled water and it must be at ambient temperature. Azaleas love soil that is acidic. It is possible to include 3-4 drops lemon juice for each one liter of water.

It is possible to collect and store rainwater for you not only for azalea , but also for various other houseplants. If the conditions for watering are not fulfilled the azaleas will shed the leaves.

2. Chlorosis

As you know, Azlea is a lover of soil that is acidic. Therefore, if the soil is high pH or is alkaline, it can harm the plant severely.

Waterlogging, high alkalinity and root rot can cause the nutrients to be unavailable to the plants. In the end, your azalea wont be capable of producing chlorophyll and the process of chlorosis can take place.

If you dont respond quickly, the leaves begin to turn yellow and fall off from the plant. Find out what you can do to fix the issue.

How to fix

If your azalea is sick with chlorosis, preventative measures wont work. Instead, change the soil. If the pH is too high( test the soil using an instrument) think about watering it with acetic acid or lemon juice regularly.

However the plant needs to include iron in the diet. Use it in the form of chelated (You can purchase acid-loving diets for plants at Amazon). It is easily digestible, even by plants that are sick.

This kind of diet is more effective when you spray it onto the leaves. The beneficial substances are absorbed into the plants tissue within a few days. It is also possible to apply them while watering. This can take as long as 3 days.

3. Lack of Light Or Excess Sun Exposure

Plants require light to photosynthesis and to produce chlorophyll. Therefore, insufficient light can alter the biological process of plants. Insufficient food and chlorophyll cause azaleas to shed their leaves. Sometimes, this type of stress can lead to the leaves of azalea to change color to red.

How to Fix

Its very simple to solve this issue. Azalea likes bright light, however, it is not a fan of direct sun. Place your azalea in a shaded spot where it will receive plenty of sunlight.

If natural light isnt accessible, artificial light can perform the same as natural light. But dont worry that plants can make use of artificial light to produce photosynthesis without issue.

It is recommended to put the azalea on the eastern side of your house. If you put it on the south-facing aspect, the plant will receive direct sunlight, which can be detrimental to the plant.

4. Transplant Shock

It is normal for every plant goes through this procedure. Sometimes, the shock of transplantation or stress can cause a significant stress on the plant. The plant then shows signs of wilting, leaves changing color, and the leaves falling.

This happens because the root system needs time to develop in a new state. Additionally, the roots could be damaged during the process of transplantation. Therefore, they wont be able to take in the nutrients or water.

There are a variety of causes of shock after transplantation, including errors during the transplanting process the selection of pots, damage to roots, insufficient irrigation, etc.

How to Fix

It is impossible to completely avoid the shock of transplantation. It is normal. In this time, you are able to keep your plant hydrated till the roots system has established.

Care for the new transplanted organs, check frequently, and attempt to determine the cause or issue, if there is one. In this way, you can lessen the shock of transplantation a little.

5. Temperature Fluctuation

Azalea is a joy to be around with a temperature not more than 22.2 degC/71.6degF in summer, and 15 degC/59degF during winter.

The primary reason for the azalea leaves falling is dryness and high temperatures. When temperatures fluctuate the plant is able to adapt to it.

How to fix

When you notice dryness in the leaves it is recommended to lower the temperature of the room (so it will recuperate more quickly) then and water it with acidified water, then spray the plant with a spray.

6. Air humidity

Low humidity in the air could cause the leaves of azaleas to fall. Azalea is a lover of moisture and will not like dry air. The plant is comfortable at 80percent humidity.

How to fix

In the event that your air becomes too dry, you must spray the leaves of the azalea frequently. To ensure that the air is humid around the blooming azaleas can put a tray of humidity beneath the plant to ensure the humidity required.

7. Diseases

If the azalea has been affected by rust, the leaf plates initially change color and then drop off. It is a fungal infection that is caused by excessive humid conditions.

Insufficient watering and stagnant water cause root rot and can cause the azaleas leaves to fall off.

How to Fix

If your azalea has been affected by rust the first step should be to remove the affected parts of the plant. If this happens, you should stop spraying water on the leaves in order to stop the spread of the disease.

Be sure that you arent overwatering your plant and that the drainage of water is functioning properly. It is not a good idea to have to have stagnant or stale water inside the pot of azalea to stop root decay.

If your Azalea is seriously infected by root rot, you need to remove the affected roots and then transplant them into new soil.

8. Insect Infestation

Azaleas can be infested by a variety of insects. The attack of insects can cause leaves to turn yellow , and the leaves that are young lose their color and then fall.

  • Whitefly insects literally sucking liquid out of leaflets.
  • Aphids also eat the juice of leaves. Because of the appearance of the insect, the plant may flower earlier than date of the due date.
  • The blooming of young azaleas could stop because of the appearance of the appearance of a mealybug.
  • Spider mites are visible in lower humidity. There are cobwebs on leaves and stems. They cause leaves of azalea to dry and drop off.

How to Fix

It is recommended to check the plant on a regular basis to identify any signs of an insect problem. If you spot any, you must immediately take action to eliminate the pests.

It is easy to eliminate tiny insects that have soft skin using the soap and water mixture. Neem oil combined with liquid soap is even more effective.

9. Incorrect Pot Selection

Due to improper pot size, your azalea may get root-bound. This means that the root system wont develop as it should be. Therefore, your azalea could be having trouble absorbing the essential nutrients and drink from the water.

How to Fix

It is essential to transfer your azalea to a larger container. In the bigger pot, the roots will have breathing space. So, the plant can receive enough nutrients from its larger root system.

10. Transplant During Flowering

If you try to transplant in the flowering or budding of azaleas, it could cause a drop in flowers, and could result in a loss of plant leaves.

If you believe that a transplant is required (if you suspect that there is a root system illness or a root injury caused from pests, or severe waterlogging of the soil , and the appearance of evidence of mold appearing on the soil surface) Perform the procedure with care.

How to fix

It is necessary to remove manually all flower buds as well as the flowers. If you dont remove the buds prior to transplanting, all the nutrients and the strength of the plant will be used to maintain the flower.

The root system of the new soil will require a bit in time for it to get settled, which could result in the dropping of leaves or even the death or demise of the plants.


To ensure that your azalea is happy and enjoying the blooms, it is important to follow the guidelines for taking care of it and to not commit mistakes that could cause this issue. If this occurs you can identify the root cause and youll know exactly what you can do.



Went from an inexperienced gardener to a half-decent one over 10+ years. I cover anything from general indoor plant guides and lawn care, to succulents and flowers. Super happy to share my tips and tricks with you :)