Why Are the Leaves of the Radermachera Sinica Drying Up? Causes and Solutions
Radermachera sinica, also known as the bean tree, is a plant that prefers to grow in hot and humid environments. It has high ornamental value and is grown on a very large area in our country. However, when growing Radermachera sinica, whether as a household potted plant or on a commercial scale, the phenomenon of dried-up leaves may occur. So why do the leaves of Radermachera sinica dry up? Below, the editor will give you a brief introduction. Let's take a look!
1. Excessive light
During the cultivation of Radermachera sinica, if the leaves dry up, the first thing to consider is whether it is caused by excessive light. This is because Radermachera sinica has fairly strong shade tolerance but is very intolerant of strong light. Especially in the high-temperature, strong-light environment of summer, if shading is not done properly and Radermachera sinica is left growing in strong light for a long time, its leaves will be scorched by the strong light, causing the leaves to lose water and wither. Therefore, we should pay attention to providing shade to ensure that Radermachera sinica grows in a suitable semi-shaded environment.
2. Unsuitable temperature
As just mentioned, Radermachera sinica likes to grow in a warm environment. Its optimum growth temperature is around 22°C. During the growth of Radermachera sinica, if the temperature goes beyond the range of 10-30°C, its growth will be affected. Too high a temperature will cause the leaves to evaporate water too quickly, leading to dry and withered leaves. If the temperature is too low, the leaves are also prone to cold damage, likewise resulting in cold injury. Therefore, we should pay attention to controlling the temperature well, doing a good job of shading and cooling in summer, and keeping warm in winter.
3. Over-fertilizing
Radermachera sinica has a fairly high demand for nutrients during its growth. We should also do a good job of fertilizing, and when fertilizing, follow the principle of applying more frequently but in small amounts. Be sure to control the dosage well and do not over-fertilize. If the fertilizer concentration is too high or too much fertilizer is applied, it can very easily burn the roots of Radermachera sinica, blocking the roots' absorption of nutrients and water, so the leaves wither from lack of nutrients and water. If too much fertilizer has been applied, stop fertilizing in time, then appropriately increase watering to dilute the fertilizer and reduce the harm from fertilizer.
4. Unsuitable soil
When planting Radermachera sinica, the soil is very important; soil rich in organic matter and with strong permeability should be used as the main medium. If it is grown in a pot, the soil should be changed at least once every two years; if Radermachera sinica stays in the same soil for a long time, the soil can very easily become compacted, hindering its growth and causing the leaves to dry up from lack of water. Therefore, we should pay attention to improving soil quality, and if Radermachera sinica withers because of soil problems, the soil should also be changed in time to ensure it can recover its growth as quickly as possible.
The above is a brief introduction to why the leaves of Radermachera sinica dry up. That is all for today's introduction. This article is for reference only, and we hope it can help you!