Why do the magnolia have yellow leaves?

First, what are the reasons

1. Root decay: unreasonable application of water during growth, resulting in too much water in the basin, no way to breathe in the root, resulting in the feeling of suffocation, the root will rot for a long time, and then the function of absorption and transportation will be weakened, the leaves will naturally turn yellow. Excessive application of fertilizer makes it difficult for the roots to absorb, resulting in root burning and leaves falling.

2. Excessive light: if the sun is too strong, the plant will be hard to bear and burn, and the leaves will not only start yellowing, but may fall if the situation is serious.

Second, what to do

You can take a look at the root. If it has rotted, you need to take out the plant, cut it out, wash it in clean water, then dry it and plant it in a flowerpot. If there is no problem with the roots, but the leaves are slightly yellowed, you can change the maintenance position, move the plant to a cool place, and wait for the plant to recover gradually.