When does the ginkgo leaf turn yellow? Why does the ginkgo leaf turn yellow?

1. When is yellow

Ginkgo leaves usually turn yellow in October and November. In October, the edges of its leaves will begin to turn yellow, and then the entire leaf will appear a very beautiful golden color. However, this will not last long and it will begin to wither in late November, so if you want to see it, you must hurry. If there are strong winds in the area, the leaves will fall prematurely.

2. Causes of yellowing

1. Normal metabolism: Ginkgo is a deciduous tree, so in the cold season, the leaves will naturally turn green and yellow. This is normal metabolism and there is no need to worry too much. Generally speaking, the leaves turn yellow in October and November. They are light yellow at first and then turn golden yellow, which has a very good ornamental effect.

2. Too much watering: Ginkgo is suitable for places with good drainage. If there is water accumulation, it will inhibit the respiration of the roots and cause excessive alcohol, resulting in poisoning and rot. Therefore, it is necessary to control the amount of water used, loosen the soil appropriately, and ensure that the water can flow out in time. In addition, increasing ventilation can also allow moisture to evaporate earlier.

3. Insufficient nutrients: During the growth process of ginkgo, lack of various nutrients will cause yellow leaves to occur. For example, nitrogen deficiency will cause the leaves to turn yellow and lack luster, phosphorus deficiency will cause the leaves to turn into yellow and green mosaic, and potassium deficiency will cause the leaves at the base and middle of new branches to turn yellow. Different types of fertilizers need to be added according to different yellowing situations.

4. Pests and diseases: Ginkgo may encounter various pests and diseases during its growth process, which may also cause its leaves to turn yellow. If it is diseased, be sure to cut off the diseased branches and leaves in time and spray carbendazim for prevention and control. If it is infested with insects, you need to use pesticides such as omethoate to eliminate the pests.