What to do when the leaves of the purple magnolia turn yellow? Causes and treatment methods
The purple magnolia, also known as magnolia and xinyi, is a flower plant unique to our country. It is widely distributed in southern China, has relatively high ornamental value, and also has certain medicinal effects. Therefore, more and more people are now growing the purple magnolia, but when growing it, yellowing leaves often occur. So what causes yellow leaves on the purple magnolia? And what should be done? Let's take a look below!
1. Hindered root growth
Hindered root growth in the purple magnolia is the main cause of yellow leaves. The purple magnolia has very poor tolerance to waterlogging, and if there is standing water in the soil, it will seriously affect root growth. This leads to insufficient absorption of nutrients and water by the purple magnolia, and the leaves lack nutrients, resulting in yellow leaves. Therefore, we must pay attention to controlling the water content in the soil. If standing water occurs, drain it promptly, then reduce the amount of watering to let it recover as quickly as possible. Control the frequency and amount of watering; watering about 4 times during the entire growing period of the purple magnolia is sufficient.
2. Poor drainage performance
Poor drainage performance is the main cause of standing water in the soil. In soil with good drainage and irrigation, standing water is generally relatively rare. On the contrary, if drainage capacity is poor, it is easy for a false appearance of soil water shortage to occur, leading to excessive watering and causing poor growth and yellow leaves. Therefore, if the purple magnolia is potted, we must check the drainage and irrigation performance of the potting soil. If drainage and irrigation are poor, then the soil should be replaced promptly. The soil should be mainly sandy soil, and the bottom of the flower pot should also have drainage holes to improve the drainage capacity of the pot.
3. Insufficient light
Light is very important for the growth of the purple magnolia, and the purple magnolia likes to grow in an environment with sufficient light. If it is in a low-light environment for a long time, it will affect the photosynthesis of the purple magnolia, causing the leaves to gradually lose their green color and gradually develop yellow leaves. Therefore, when growing the purple magnolia, we should pay attention to increasing the duration and intensity of light. Provide sufficient light for the purple magnolia, and never let the purple magnolia be in a dark environment, which would affect its growth.
4. Pests and diseases
Pests and diseases are also one of the main causes of yellow leaves on the purple magnolia. Pests and diseases harm the leaves of the purple magnolia, inhibit leaf growth, and prevent the absorption of sufficient nutrients, resulting in yellow leaves, and when pests and diseases are severe, they can also cause the plant to die. If pests or diseases occur, then promptly check exactly what pests or diseases they are, apply the appropriate treatment, and prevent the condition from spreading. In addition, you should have some knowledge of pest and disease protection and do a good job of prevention.
The above is a brief introduction to the causes of yellow leaves on the purple magnolia and the treatment methods. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!