How to Fix Curled, Drooping, Yellowing, and Falling Leaves on a Radermachera sinica (China Doll)

Because the Radermachera sinica itself is relatively easy to manage, and the information we usually receive is also that the Radermachera sinica does not need much management, so when one day the leaves of the Radermachera sinica curl and turn yellow, we realize that we have really been negligent in caring for it. So at this point, what should we do? Should we give the Radermachera sinica a large amount of nutrients to make up for all the past neglect?

What to Do When Radermachera sinica Leaves Curl and Droop

1. Caused by discomfort from a new environment

A newly purchased Radermachera sinica may develop curled leaves due to changes in its living environment. The greenhouse environment is generally well ventilated and humid, but the indoor home environment is relatively dry. This sudden change in environment can have a major impact on the plant, and in severe cases can even lead to the plant's death.

2. Relaxed management, too little watering

Radermachera sinica likes a warm and humid environment. If it is watered too little, the plant cannot get enough water, and the leaves' transpiration consumes a large amount of water, which will cause the leaves to curl. At this time, water should be replenished promptly.

3. No ventilation for a long time, poor air circulation

Another major feature of the indoor environment is poor ventilation, so we need to open the windows often for ventilation. In winter, choose a warm midday to prevent the plant from suffering cold damage.

4. Lack of light

Lack of light is also a major cause of curled leaves. Normal plant growth must have sufficient sunlight. Although Radermachera sinica can tolerate shade, it cannot endure long periods of darkness. Therefore, if the indoor light is too weak, you can move the Radermachera sinica to a sunny place every few days to receive light.

5. Watering too frequently, or long-term water accumulation causing root rot in Radermachera sinica

Most flower growers kill their plants by watering. Radermachera sinica likes a warm and humid environment, but not water accumulation. If the plant's root system is damaged, it will inevitably limit the plant's growth.

How to Solve Yellowing and Falling Leaves on Radermachera sinica

1. Temperature

Build a shade shed for the Radermachera sinica, increase the frequency of misting, or place the Radermachera sinica in a cool, ventilated place with dappled shade. Remember not to place it at the air outlet of a computer. Also, if the temperature is below 8°C, there will begin to be a risk of cold damage. You must also not let the temperature get too low!

2. Light

Place the Radermachera sinica on a balcony or another place where it can receive sunlight, but note one thing: it is true that Radermachera sinica likes light, but it does not like being exposed to strong sun. So in summer when the sun is blazing, you must shade the Radermachera sinica.

3. Watering

Pay attention to watering. Do not wait until the soil is completely dry before watering. When watering, water thoroughly in one go; it cannot be wet only on top and dry below. The principle is: do not water if not dry, and water thoroughly when you do. At the same time, also pay attention to indoor air humidity. You can mist appropriately around the Radermachera sinica to increase indoor air humidity. You can often spray the plant with clean water to maintain its fresh appearance and also increase environmental humidity.

4. Humidity

Increase indoor ventilation and air flow, and appropriately increase indoor humidity so that the leaves of the Radermachera sinica can breathe more smoothly.

5. Fertilizing

If too much fertilizer has been applied, you can flush the potting soil with water to dilute the fertilizer strength, but be careful not to cause water accumulation.

For the problem of nutrient deficiency, you can appropriately apply some compound fertilizer to the Radermachera sinica, but it must not be too much, must not be too much, must not be too much. Important things should be said three times.

6. Metabolism

This belongs to the normal growth range of the plant. Radermachera sinica is carrying out metabolism all the time. Old withered leaves turn yellow and die, and new leaves grow out to continue growing. In this case, simply cut off the yellowed leaves; no special care is needed.7. Diseases

During ordinary cultivation of Radermachera sinica, strengthen ventilation and light transmission, and avoid leaves being wet for long periods. When a small number of diseased leaves are found, promptly remove and burn them, and regularly spray 50% carbendazim wettable powder at 600 times dilution, once every half month, for 3 to 4 consecutive times.

For household potted plants, for disease spots appearing on a small number of leaves of individual plants, you can apply Dakning cream ointment.

8. Pests

Before pests occur, we should strengthen ventilation and light transmission, and pay attention to the temperature and humidity of the Radermachera sinica's growing environment. If pests have already occurred, then promptly spray insecticide at the early stage of occurrence, nipping the danger in the bud.

What to Do If the Radermachera sinica Is Too Tall

1. You can prune it to stop it from growing wildly.

When its branches have grown a lot, wait until winter when the weather is relatively cold, then prune it. Because the weather is relatively cold, bacteria appear more slowly. If you prune it at this time, it will not become infected. Also, in winter it is dormant, the wounds will not ooze sap, and the recovery speed is a bit faster.

You can pinch it, removing the buds at the top by hand, or cut them off with scissors. This can prevent the branches from growing wildly, and the lower branches can grow better.

2. When pruning, you need to ensure it looks good. If the soil is still very fertile, you can help it by replacing the soil. If it is too tall, it will be difficult to grow indoors, so you can remove its top in spring.

3. Generally, indoor flowers do not need to grow too fast, so be sure to give them less nitrogen fertilizer. After shortening the branches, you can add some potassium fertilizer, let it see more light, and ventilate more.

Precautions for Watering Radermachera sinica

Although Radermachera sinica needs regular care, there are also particular ways to do it, and it cannot be done arbitrarily.

First, summer is dry and hot, so watering frequency needs to be higher. In addition to noon and evening every day, the plant's main body should also be misted in three separate sessions to maintain a humid environment. Therefore, during the two watering sessions, the amount should be reduced somewhat to prevent watering too frequently, which can cause root rot and may even lead to death.

In winter, if it is not particularly dry, you can also water once every two or three days. When watering, to prevent it from freezing, you can use a certain amount of warm water for irrigation to help the plant keep warm.

In short, during the watering process, maintaining moisture is very necessary, but everything has a limit, and you cannot waterlog the plant to death either.

Although growing Radermachera sinica does not require much management, you cannot completely ignore it, and at the same time you cannot manage it too frequently. In short, cultivating Radermachera sinica is something that places very high demands on control, just like the happiness of a family: you can neither control it too rigidly nor ignore it completely. You must grasp the right degree.