What is the cause of yellowing leaves? 1, improper light causes: too much sunlight or too dark, will lead to plant leaves yellowing; 2, water and fertilizer problem factors: too much watering or too little, too much fertilization or long-term malnutrition of plants, will cause yellowing of leaves; 3, the temperature is too low Reasons: too low temperature will inhibit plant growth; 4, pests and diseases: infection with diseases and insect pests will also cause leaves to yellow and fall off.
Yellowing of leaves is a problem that all plant growth processes will encounter, in addition to normal physiological factors leading to leaf yellowing and shedding, then summarize the reasons for other abnormal leaves yellowing, in fact, most of them are only affected by 4 factors, all flowers and plants are the same, interested friends continue to look down!
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1. Improper illumination
Because the leaves of the plant contain a lot of chlorophyll, it needs to photosynthesize with the sun to form nutrients such as glucose for the growth of the plant, if the light is poor, it will cause the leaves to turn yellow, but the light is too fierce, the leaves are sunburned, and there will also be yellowing and drying.
2, water and fertilizer reasons
In the process of watering and fertilization, we must pay attention to where each plant needs to be, some plants are more drought-tolerant or the potting soil is not breathable enough, then you can not water too much, so as not to have a water rot, but long-term drought is not OK, root absorption problems, leaves will be yellow.
Fertilization is also the key, many friends in the raising of flower plants, want the flowers and plants to grow well, that is eager to put into the fertilizer pile to raise, this is too much wrong behavior, too much fertilization is easy to fertilize the root, causing the root to absorb discomfort The leaves have the opportunity to turn yellow, but in the case of malnutrition for a long time, the leaves will also be yellow.
3, the temperature is too low
In addition to some endemic plants in the north, most of the flower plants in life, in fact, are not very tolerant of low temperatures, when the temperature is lower than zero degrees Celsius, basically the leaves will appear yellowing and falling, because the low temperature will inhibit the growth of plants, when entering a low temperature dormant state, the leaves will be yellowed and fall because of the lack of nutrient supply.
4. Disease and insect pest infection
When the occurrence of disease and insect infection, plant function will be affected, no matter the root, stem, leaf which part is threatened by pests and diseases, basically the leaf response will be very timely, that is, yellowing, long spots, dry, falling and so on, so when the plant leaves are found to be wrong, it is necessary to carefully observe which part of the problem there is, and then timely prevention and control.
Therefore, the leaves of the plant are actually an external manifestation of its health state, in addition to the normal seasonal changes in leaf metabolism yellowing does not need too much attention, when there is abnormal yellowing, we have to find the reason from the above four aspects. If you have more about the factors of plant leaf yellowing sharing and control methods, welcome to leave a message below to share!