The azalea is a beautiful plant for its pleasant appearance. Indoor growers cultivate this plant as an ornamental flowering plant.
This plant is very easy to care for, but problems can occur. Azalea leaf drop is one of the most common problems faced by indoor growers.
Possible reasons for azalea leaf drop are too much water, lack of nutrients, light or humidity. Additionally, excessive watering, disease, and insect infestations can also cause azalea leaf drop.
Read on to learn more about what causes azalea leaf drop and what you can do to fix the problem.
I also explain how this can be avoided.
Causes of Azalea Leaf Drop
Indoor azalea requires regular care. Leaf drop is the azalea’s primary response to care errors.
At the first signs of wilting and falling leaves, identify the cause and try to remedy it. Let’s see how you can do this.
1. Overwatering
Are you overwatering your azalea? The main reason for drooping azalea leaves is waterlogging. Azalea needs regular and moderate water, but too much water will harm your azalea.
With excess moisture, the upper part first turns black, then the leaf plates and affected leaves fall off. Due to excess moisture, not only the leaves, but also the stems change color. They begin to darken and dry out.
How to fix
In the fall, when the buds sprout, reduce the amount of water. Azalia does not like hard water.
Use settled or filtered water and it should be at room temperature. Because the azalea loves acidic soil. You can add 3 to 4 drops of lemon juice per liter of water.
You can collect and store rainwater for yourself, not only for azaleas, but also for other indoor plants. If irrigation conditions are not met, the azaleas lose their leaves.
2. Chlorosis
As you already know, the azalea likes acid soils. So if your potting soil has a high or alkaline pH, it will seriously harm your plant.
High alkalinity, waterlogging and root rot make nutrients unavailable to plants. As a result, your azalea will be unable to produce chlorophyll and chlorosis will occur.
If you don’t act quickly, the leaves will turn yellow and fall off the plant. Let’s see how to fix the problem.
How to fix
If your azalea already has chlorosis, preventative measures won’t work. You can try to change the ground before. If the pH is high (test your soil with a kit), consider watering regularly with lemon juice/acetic acid.
But in addition, the plant will need to add iron to the diet. Apply it in chelated form (you can find plant-based acid diet on Amazon). It is the easiest to digest, even for a sick plant.
This type of plant food works faster if you spray it on the leaves. Beneficial substances penetrate plant tissues within a day. You can also apply them when watering. This way it can take up to 3 days.
3. Shock graft
It is completely normal for any plant to go through this process. Sometimes the shock or stress of transplanting takes a heavy toll on the plant. As a result, the plant exhibits symptoms such as wilting, yellowing of leaves, and leaf drop.
This happens because the root system needs time to settle into a new state. Also, the roots can be damaged during the transplant procedure. It will therefore not be able to absorb water or nutrients.
There are few reasons that cause transplant shock; including errors in the transplanting process, selection of pots, damage to the root system, improper watering, etc.
How to fix
Transplant shock cannot be completely avoided. This is completely normal. During this time, you can water your plant regularly until the root system is established.
Take care of new transplants, inspect them regularly and try to identify any problems. This way you can reduce the shock of the transplant a bit.
4. Lack of light Or overexposure to the sun
Plants need light for photosynthesis and chlorophyll production. Thus, insufficient light will disturb the physiological processes of the plant. Lack of food and chlorophyll causes azaleas to lose their leaves. Sometimes this type of stressful state can cause azalea leaves turn red.
How to fix
It is very easy to solve this problem. The azalea likes bright light but not direct sunlight. Place your azalea in a shady location where it can receive plenty of light.
When natural light is not available, artificial light works just like natural light. Don’t worry, plants can use artificial light for photosynthesis without any problems.
It is best to place the azalea on the east side of your house. If you place it on the south side, it will receive direct sunlight, which is detrimental to the plant.
6. Temperature fluctuations
The azalea feels great with an air temperature of not more than 22°C in summer and 15°C in winter.
The main reason why azalea leaves fall off is drought and high air temperature. At varying temperatures, the plant tends to cope.
How to fix
As soon as you notice the leaves drying up, lower the temperature of the room (so that the plant recovers better), water it with acidified water and spray the plant.
7. Humidity
Low humidity can cause azalea leaf drop. Azalea is moisture-loving and does not tolerate dry air. With 80% humidity, the plant feels wonderful.
How to fix
If the air is too dry, spray the azalea leaves regularly. To maintain humidity levels around flowering azaleas, you can place a humidity tray under the plant to maintain necessary humidity levels.
8. IllnessS
When the azalea is infected with rust, the leaf patches first change color and then fall off. It is a fungal disease and occurs due to excessively humid conditions.
Overwatering and standing water cause root rot diseases and drop diseases of your azalea.
How to fix
If your azalea is infected with rust, your first step should be to remove the infected parts of the plant. In this situation, stop spraying water on the leaves to prevent the spread of the disease.
Make sure you don’t overwater the plant and that the water drainage works well. You don’t want standing water in the azalea pot to prevent root rot.
If your azalea is badly infected with root rot, cut off the infected root parts and then transplant with new soil.
9. Insect infestation
Your azaleas can be affected by a variety of insects. Insect infestation also causes yellowing of leaves and discoloration and shedding of young leaves.
- The whiteflies literally suck the liquid from the leaflets.
- Aphids also feed on leaf sap. Due to the appearance of the pest, the plant may bloom long before its expiration date.
- The flowering of young azaleas may stop due to the appearance of a mealybug.
- Spider mites appear in low humidity. You can find cobwebs on stems and leaves. They cause azalea leaves to dry up and drop.
How to fix
You should regularly inspect the plant for any symptoms of insect infestation. If you find any, take immediate action to remove them.
Small insects with soft skin can be easily removed with a soapy solution. Neem oil with liquid soap works even better.
10. Incorrect boat selection
The wrong pot size can cause your azalea to get stuck at the roots. And because of this, the root system will not develop as it should. As a result, your azalea may have trouble absorbing necessary nutrients and water from the water.
How to fix
You need to transplant your azalea into a large container. The roots have room to breathe in the larger pot. In this way, the plant receives enough nutrients from its extensive root system.
11. Transplant during flowering
Attempting to transplant while the azaleas are budding or flowering will cause the flowers and leaves to drop off the plant.
If a transplant is necessary (if you suspect a disease of the root system, damage to the roots by pests, severe waterlogging of the soil with the appearance of mold spores on the surface), carry out the procedure very carefully.
How to fix
You have to remove most buds and flowers manually. If you do not remove the buds before transplanting, all the plant’s reserves of nutrients and energy will be spent on maintaining the flowers.
It will likely take some time for the root system of the new soil to become established, which could lead to leaf drop or plant death.
conclusion
To keep your azalea happy and enjoying its bloom, remember the maintenance rules and avoid making mistakes that can cause this problem. However, if it happens, identify the cause and you will know what to do.
Sharing is caring!