What to do if magnolia leaves turn yellow

Watering

Although frequent watering is a good habit for growing flowers, if you water too much or too frequently, the soil in the pot will become too wet or even waterlogged, resulting in a lack of oxygen in the soil, hindering root breathing, causing some fibrous roots to rot, hindering normal absorption of nutrients, and causing the leaves to gradually turn yellow and fall off.

Treatment method: Stop watering immediately, or repot and change the soil.

Fertilization

Long-term lack of fertilizer, or failure to change the pot or soil for a long time will lead to a lack of nutrients such as nitrogen in the soil, resulting in weak branches and leaves, and thin and yellow leaves. In addition, excessive fertilization will cause new leaves to become thick and uneven, and old leaves to become dry, brown and fall off. How to deal with this phenomenon: How to deal with it: Stop fertilizing immediately, increase the amount of watering, remove some of the old soil, replace it with new culture soil, and carry out normal management.

temperature

In the hot summer, if flowers that prefer coolness, such as Clivia, cyclamen, and Begonia, are placed in a high temperature place and exposed to direct sunlight, it is very easy to cause the tips or edges of young leaves to burn, or the leaves to fall off. In winter, if the room temperature is too low, the evergreen flowers and trees introduced from the south will suffer slight frost damage and their leaves will turn yellow. If the room temperature is too high, the plants will evaporate excessively and the roots will lack water and nutrients, which will also cause the leaves to turn yellow.

Treatment method: Avoid direct sunlight at noon during the hot summer to avoid counterproductive effects, and pay attention to ventilation.

Air Drying

In the dry winter, some flowers that like moisture, such as orchids, hollyhocks, white orchids, osmanthus, and Michelia, often have dry and yellow leaf tips, or scorched leaf edges, or burn spots and curled edges on the leaves. This phenomenon is more serious especially in winter when coal is used for indoor heating.

Treatment: Use water close to the indoor temperature to spray the branches and leaves frequently. For some precious flowers, it is best to cover them with plastic film and place a small basin of clean water in the cover to increase the indoor humidity and make the magnolia more comfortable.

Pest and disease damage

Leaf spot disease caused by fungi and other pathogens can easily cause local necrosis of leaves. After being infected by the mosaic virus, yellow-green spots will appear on the leaves. If attacked by pests such as scale insects and red spiders, the leaves will turn yellow or the entire leaf will wither and fall off.

Treatment method: When pests and diseases are found, spray pesticides such as thiophanate or dimethoate in time for prevention and control.