What to do if the leaves of Milan turn yellow

Low temperature

The yellowing of Milan leaves often occurs in winter, and the main reason is that the temperature is too low. Milan likes a warm environment and will be frostbitten when the temperature during the winter is lower than 5 ℃. The early symptoms of frostbite are gradual yellowing of leaves and then falling off. Another thing is that due to the cold wind, the leaves of Milan turned yellow overnight.

Once the plant is frozen or blown by cold wind, it is difficult to save it, and it will affect its flowering in the second year, so pay attention to keeping warm in winter.

Improper watering

Milan likes moisture. If it is not repotted for a long time, the nutrients in the soil will decrease and there will be less oxygen. After watering, the roots will be in a relatively wet state for a long time, and respiration will be inhibited. Local roots will cause necrosis and cause the leaves to turn yellow and fall off. At this time, you need to stop watering immediately. If the soil in the pot is too wet, you can remove the plant from the pot and replant it.

In addition, in hot seasons, if watering is not timely and the soil in the pot is too dry for a long time, the leaves will turn yellow in a short period of time. At this time, do not water the plant all at once, but do it step by step to allow the plant to recover slowly.

Insufficient light

Milan needs plenty of sunlight to grow. If it is placed in a shaded environment for a long time, less nutrients will be accumulated through photosynthesis, which will cause the leaves to turn yellow and fall off. At this time, move the Milan immediately to the sun and turn it every month to allow the Milan to receive even light. Even if the leaves turn yellow, they will recover slowly.

Soil pH

Milan likes slightly acidic soil. If the soil is alkaline, the leaves will turn yellow. Most of the soil in the north is alkaline, and it is difficult to avoid this situation. The easiest way is to try to change the pH value of the soil. In the north, water with alum fertilizer 3 to 5 times a year to reduce the alkalinity of the soil; repot once a year, and use field soil, pine needle soil and a small amount of river sand for cultivation. Most of the soil in the south is slightly acidic, so you can use river and pond mud directly for cultivation, and repot it every 1 to 2 years.

Poor ventilation

The growth of any plant requires good air quality. If Milan grows in a place with poor air convection for a long time, its leaves will easily turn yellow. Usually, you should pay attention to opening windows for ventilation, and promptly cut off the dense branches and overgrown branches on the inside to ensure good light and ventilation.