Ginkgo biloba yellow leaf ??? When do ginkgo leaves turn yellow

Ginkgo biloba is originally slow, but I don't know how slow it is over there! One reason why the leaves are yellow is because of the lack of phosphate in the soil!

It starts to turn yellow in October.

1. In October, the edges of the ginkgo biloba have begun to turn yellow, and slowly, the leaves will turn golden, which is particularly beautiful.

2. Ginkgo biloba leaves begin to wither and lose their leaves in late November. Therefore, friends who enjoy the leaves should seize the time.

3. If there is no strong wind during the period, the golden color will continue until mid to early November, 4. Then the northwest wind from the north blows, the leaves begin to fall one after another, and the ground is also golden.

5. Survive the cold winter, and it is probably not until around May of the following year that tender green shoots begin to appear.

6. According to the data of gymnosperms, the leaves of the ginkgo biloba tree turn yellow at the end of October and early November, and the most suitable viewing period is around November 10.

Ginkgo biloba leaves in October leaves gradually appear yellow, until November leaves have all turned golden color, if you want to see the ginkgo tree best choose November 10, this is the best time to see the ginkgo tree, until the end of November the leaves begin to wither, into December the leaves on the branch has all withered.

Ginkgo biloba trees are often planted on both sides of the road because of their high appreciation value, so when do the leaves of the ginkgo tree turn yellow, generally during October and November, the leaves begin to gradually turn yellow until they completely turn golden, the scenery is very pleasant, if you want to enjoy the leaves, you must not miss this time period.

The edges of the leaves begin to turn yellow at the beginning of October, and after a month, they all turn golden in November, and November 10 is the best time to see the ginkgo trees.

In mid to late November, the leaves gradually wither, if there is a strong wind, the leaves will fall faster, by December the leaves have all fallen off, the bare trunk after the cold winter, in the following May will begin to grow tender green shoots, and repeat the growth pattern of the year.

Ginkgo biloba is the most ideal species for greening and ornamentation, which can absorb pollutants emitted by vehicles and has the effect of purifying the air, and has a good function of anti-pollution and anti-dust, if planted at the edge of the desert, it can also play a good role in windproof and sand fixation, and can maintain the balance of water and soil.

Ginkgo biloba symbolizes beauty and harmony. The leaves of the ginkgo biloba are like ordinary fans, and both sides are evenly symmetrical, just as people like to place fans on the walls of their homes, which is a good wish for family harmony and a happy life. Ginkgo biloba mixed with this faint fragrance can evoke good memories in people.

Ginkgo biloba represents this health and longevity. The growth life of ginkgo biloba is very long, and the ginkgo leaves are given to the old man, which means that he hopes to live a long life and live longer than Nanshan. Ginkgo biloba also maintains a healthy growth state when growing, and is rarely harmed by pests and diseases, and this healthy blessing will be retained with the leaves.

Tree insect infestation

The main pest that causes the yellowing of ginkgo biloba leaves is the tea yellow thrip, which belongs to the thrips family of the order Tasseloptera, and mainly uses its suction mouthparts to suck the sap of the leaves. Ginkgo biloba can be threatened by insect infestations from April to September. Generally, after being sucked by tea yellow thrips, the leaves turn from silvery-white spots to yellow-brown lesions, and the leaves are wrinkled, which can lead to early defoliation of ginkgo biloba in severe cases.

Once the ginkgo biloba is infected with insect pests, the diseased branches should be pruned in time. Mainly in June to August, spray ginkgo trees, and use dimethoate and other pesticides to get rid of pests.

The pathogenic fungus causes the yellow

Alternaria SP belongs to the genus Alternaria, which is the main cause of mycosis in Ginkgo biloba. In general, infestation of ginkgo biloba trees can cause leaf blight. July to September is the peak incidence period.

At first, the edge of the ginkgo biloba leaf turned yellow, and later it showed a corrugated reddish-brown lesion. In the early stage, it can be distinguished by the naked eye, and in the later stage, the lesion extends to the whole leaf, causing the leaf to scorch and fall off. If fungal infections are found, even if they are cared for, the diseased branches should be pruned to prevent leaf infection.

Lack of management

Normally, ginkgo biloba turns yellow naturally from October to November. Generally speaking, the naturally yellowing ginkgo biloba turns from light yellow to golden yellow, which has a good ornamental value.

However, if it turns yellow at other times, it means that there is a problem with maintenance, and improper management will also make the ginkgo biloba yellow. If it is due to insufficient nutrients, such as a lack of nitrogen will make the leaves yellow and dull, and a lack of potassium will make the leaves at the base of the new branches yellow, then it is necessary to supplement the lack of fertilizer in ginkgo biloba leaves.

If it is due to excessive watering or heavy rainfall in summer, it may inhibit the respiration of the roots of ginkgo biloba and show signs of rot and poisoning. It is necessary to control the amount of watering on a daily basis, and when watering too much, it is necessary to drain the loose soil in time to help the water evaporate. In addition, it should be noted that ginkgo trees should not be planted in low-lying areas, as they are prone to poor growth and root rot in the rainy season.

1. Yellow leaf time.

Ginkgo trees generally begin to turn yellow in October in autumn, but due to the difference in geographical location, planting climate, and altitude between the north and south, the time of yellow leaves is also different.

2. Yellow leaf process.

Generally, the ginkgo biloba leaves will start to turn yellow from the edges in October, and the leaves will slowly turn yellow as time progresses. At this time, the yellow leaves of the tree are beautiful. In late November, it will turn back and begin to fall, but the golden yellow of the ground is like "** avenue", which is also interesting.

The solution is as follows:

1. Clean the countryside and reduce the source of bacteria In autumn, it is necessary to clean the residual branches and leaves in the ginkgo biloba garden to reduce the number of pathogens;

2. Spray fungicides, spray carbendazim once when the ginkgo tree germinates to protect the tree body, in the early stage of leaf blight, use 25 or 50 carbendazim 500 to 800 times of liquid, or 1000 times of myctorick, or 70 methyl tobuzin 800 times of liquid, or 50 antibacterial special 800 to 1000 times of liquid, or 70% mancozeb 600 times liquid, or 77 can kill 800 to 1000 times of liquid, spray once every 15 to 20 days from early June, about 2 to 3 times;

3, the pesticide insecticide, the control of the square is to imitate the rough method is in the middle of June, mid to late July, mid-August spraying, mature trees can also be mixed with phosphorus or phosphine before germination under the tree tray, can kill tea yellow thrips pupa, can also kill other underground pests;

4. Reasonable fertilization, heavy application of basal fertilizer and light top dressing, heavy application of autumn and winter fertilizer and light application of spring fertilizer, heavy application of organic fertilizer and light application of chemical fertilizer, heavy application of multiple compound fertilizers and light application of single fertilizer species, balanced fertilization do not indiscriminately fertilize, and the necessary extra-root top dressing is applied during the growth period;

5. Reasonable watering, timely drainage of the ginkgo orchard to drought can be watered and drained, because the ginkgo tree has a water-loving and not waterlogged, in the rainy season, it is necessary to drain the water in time, and after the rain, it is necessary to cultivate the loose soil and eradicate weeds.