Causes and treatments for yellowing leaves of purple magnolia

1. Root growth is hindered

Reason: Magnolia is a plant that is not tolerant to waterlogging. If there is water accumulation in the soil, the growth of its roots will be hindered, which can easily lead to problems with the plant's absorption of nutrients and water. The leaves will not be able to get enough nutrition, resulting in yellow leaves.

Solution: If water accumulates, the first thing to do is to drain the water, reduce or stop watering, let the excess water evaporate as soon as possible, and wait for it to recover. In addition, the frequency and amount of watering need to be reasonably controlled. Generally, wait until the soil is slightly dry before watering. Just water it once every 3-5 days during the growing season.

2. Poor drainage

Reason: If the drainage performance of the potting soil is good, water accumulation will rarely occur. On the contrary, if the drainage performance is very poor, it will easily create the illusion of water shortage, resulting in excessive watering, which will cause the root system of the purple magnolia to be unable to bear it, resulting in poor growth and yellowing of the leaves.

Solution: Check whether the soil in the pot has good drainage. If the drainage is poor, the potting soil should be replaced in time. Sandy soil has the best drainage performance. It is best to choose a pot with drainage holes at the bottom. In addition, it is best to replace the soil of potted purple magnolia every two years to avoid the problem of soil drying out.

3. Insufficient light

Reason: Purple magnolia likes a warm, humid and sunny growing environment. If there is insufficient light for a long time and lack of photosynthesis, the leaves will not be so green and will turn yellow.

Solution: Increase the light. The best way is to place it in a sunny place. For example, outdoors, on balconies, or in brightly lit places, it should not be placed in an overly dark environment.

4. Pests and diseases

Reason: Pests and diseases can damage the leaves of the purple magnolia, preventing the leaves from absorbing sufficient nutrients and hindering their growth, which will cause the leaves to turn yellow. In severe cases, the plant may die.

Solution: If pests and diseases occur, spray the medicine in time to solve the problem and avoid the situation from getting worse. A certain amount of knowledge on disease and insect pest prevention is essential, as it can be prevented in advance and can prevent diseases and insect pests from harming plants.