Why do the leaves of the ficus tree have dark spots, and what is the reason for the black spots on t

1. Nitrogen deficiency: the fertility is not enough and the leaves are dull, this situation is the simplest, and you can apply some nitrogen fertilizer.

2. Lack of sunlight: Not having enough sunlight can also cause banyan trees.

The black-leaved, banyan tree is originally a tropical plant, and the inevitable condition for its growth is full sunlight.

3. Black spot disease: when the damage is severe, the leaves are easy to curl.

If the diseased leaves are found, they should be removed in time and burned in a concentrated manner to reduce the source of bacteria. After the new leaves are extracted, spray 50% promethane wettable powder 1000 times or 75% Daknin in time.

chlorothalonil) 500-600 times of wettable powder, 400-500 times of 70% mancozeb wettable powder, once every 10 days or so, 3-4 times of continuous control.

The causes and solutions of dark spots on the leaves of banyan trees are as follows:

Insufficient fertilizer. Fertilization is sufficient.

Poor ventilation. It can be placed on the balcony for ventilation. Let it soak up the sun.

Improper watering. Caused by waterlogging in large basins. Because the damaged root system can not be recovered for a while, of course, it will continue to fall leaves, and then pay attention to dry and water thoroughly, so that it can recover slowly, do not be anxious, and do not water the roots at this time.

Rotten roots If there are yellow leaves, and the leaves are dropped. Then change the soil and remove the rotten roots.

Banyan (scientific name: ficus microcarpa linn.). f.

Large trees, up to 15-25 m high, DBH up to 50 cm, with a wide crown width; Old trees often have rusty brown aerial roots. The bark is dark gray. The leaves are thin leathery, narrowly elliptic, dark green on the surface, shiny, entire.

Ficus fruit in pairs axillary or born in the axils of deciduous branches and leaves, yellow or reddish when ripe, oblate spherical, basal bracts 3, broadly ovate, persistent; Male flowers, female flowers, and gall flowers are born in the same banyan fruit, and there are a few short bristles between the flowers; tepals 3, broadly ovate, columella proximal lateral, stigma short, club-shaped. The achenes are oval. Flowering period is from May to June.

If the water hurts, the temperature is high, the leaves of the water banyan tree will become thinner, and it will become black when exposed to a little sun, so that the potting soil will dry out, and the roots will become thicker when the roots are aging, and the ability to resist sun, wind, and disease will be strengthened

Most of them are due to nutritional deficiencies, and the tree is declining, which occurs under the inducement of habitat mutations (such as temperature, temperature, light, etc.). Foliar spraying of 1200 times of 70-methyl tobuzine wettable powder to prevent and control leaf diseases.

Hello, first, nitrogen deficiency: the fertility is not enough, the leaves are dull, this situation is the easiest, just apply some nitrogen fertilizer.

2. Lack of sunlight: not having sufficient sunlight will also cause black leaves of the banyan tree, which is originally a tropical plant, and the inevitable condition for its growth is sufficient sunlight.

3. Black spot disease: when the damage is severe, the leaves are easy to curl.

What is the cause of dark spots on ficus leaves?

Hello, first, nitrogen deficiency: the fertility is not enough, the leaves are dull, this situation is the easiest, just apply some nitrogen fertilizer. Second, the lack of sunlight:

Not having enough sunlight will also cause black leaves in the banyan tree, which is originally a tropical plant, and the inevitable condition for its growth is sufficient sunlight. 3. Black spot disease: when the damage is severe, the leaves are easy to curl.

Prevention and control methods: (1) Diseased leaves are removed in time and burned in a centralized manner to reduce the source of bacteria. (2) After the new leaves are extracted, spray 1000 times of 50% promethine wettable powder or 500-600 times of 75% Dacnin (chlorothalonil) wettable powder, and 400-500 times of 70% mancozeb wettable powder, once every 10 days or so, and 3-4 times of continuous control.

What's the deal with the black spots on the leaves of a potted banyan tree? Bugs, sick? Or is there no sunlight or insufficient ventilation and fertility?

The following gardener uncle will analyze the reasons and solutions for you: 1. Nitrogen deficiency: insufficient fertility and dull leaves.

This is the simplest case. Just apply some nitrogen fertilizer. 2.

Lack of sunlight: Insufficient sunlight can also cause black leaves of the banyan tree. The banyan tree is originally a tropical plant, and the necessary condition for its growth is sufficient sunlight.

3. Black spot disease: when the damage is blind, the leaves are easy to curl. Prevention and control methods:

Remove the diseased leaves in time and burn them intensively to reduce the source of bacteria. After the new leaves germinate, spray 1000 times of 50% diphenhydroxylate wettable powder or 500-600 times of 75% chlorothalonil wettable powder and 400-500 times of 70% mancozeb wettable powder, once every 10 days or so, 3-4 times in a row. Note:

The above fungicides are effective against the disease, and the key lies in the time of administration. Pre-onset prevention of noisy disease** can achieve more than 70% control effect, and medication after the onset of the disease can control the development of the disease, but the control effect is not good. Fourth, mold without ventilation:

The leaves have black pockmarks. According to what you said, the main thing is that the ventilation is not good, and the leaves are moldy. Ventilation can be strengthened daily.

After dilution, spray the foliage and dorsal surface of the foliage once or twice a week for two weeks. If there are red spots on the leaves, it is more serious. Aphids may be related to them.

You can't wipe it off with a wet brush, but you can dip it in dimethoate. Raise flowers, go to the gardener's forum:, sing and laugh all the way.

It's so lively on the road to raising flowers!

The first thing to be discharged from the leaves of the banyan potted plant is to check whether it has attracted pests, if the pests erode the leaves, the leaves will grow spots and even fall off. At the same time, it is also necessary to pay attention to whether there is a virus in the leaves, and if there are really pests or viruses, they must be removed even to avoid further damage to the banyan tree.

In addition, if the leaves of the banyan tree lack fertilizer, it is easy to cause the leaves to grow spots, so if the banyan tree is cultivated, it must be fertilized regularly, and the soil can be properly loosened to make the banyan tree grow more beautiful.

In the peak growing season, the plant should be topped and budded, and a large pruning should be carried out in autumn, and then no pruning should be carried out, because the plant grows slowly in winter, and it is not suitable to prune in winter.

Pictured: Banyan bonsai.

The banyan tree is a very vigorous plant, very plastic, and is often appreciated by potted plants, but sometimes the banyan tree also has some problems that affect its ornamentality, such as black leaves. So, what is the reason for the black leaves of the banyan tree and what to do if the leaves of the banyan tree are black? The following Uncle Gardener will introduce you to several causes and solutions for the blackening of banyan leaves!

1. Frost damage. The blackening of the leaves of the banyan tree may be due to the fact that the temperature is too low during the winter, and the leaves are blackened due to freezing. Keep the ambient temperature of potted banyan trees at 10 to 15 degrees in winter, and reduce watering appropriately.

Move the banyan tree with blackened leaves to a higher temperature environment, and when the temperature is above 25 degrees Celsius in spring, it will grow new branches and leaves. If the temperature is too low and the time is too long, there will be no vitality.

Pictured: A banyan tree with blackened leaves.

2. Excessive watering has soaked the root system.

If the root system of the banyan tree is damaged, it can be dug out of the soil first, put it in a semi-shaded and well-ventilated place to dry, and then cut off the rotten root system, and soak it with 500 times the liquid carbendazim or splash the root system to disinfect and sterilize, and then leave the main trunk, it is best to prune the branches and leaves on the plant, change the pot, bury the root system in the sand (the sand is slightly wet), you can also set a white bag, put it in a dark and astigmatism place for ten days and half a month, pay attention to the temperature above ten degrees It will be rejuvenated.

3. Environmental pollution is dirty.

The leaves of the banyan tree are not clean in places with coal stains or dust, and sometimes they will be dirty to black, so just place the potted plant in a clean and ventilated place, and then scrub the leaves with a soft cloth dipped in water.

Pictured: Banyan bonsai.

Tips] Banyan trees like the sun, should be placed outdoors in a sunny place to let it bask in more sunlight, do not need to water often, be careful not to accumulate water, otherwise the roots are easy to rot, in the growing period can be properly pruned for later shaping.

Reasons and treatment methods for the blackening of banyan leaves: 1. The weather is too cold, and the frost damage is serious, and the biggest reason for the blackening of banyan leaves is that the temperature is too low, and the frozen leaves cause blackening. The solution is to place the potted banyan tree in a place with a higher temperature in the hall.

2. If you water too much, the root system will rot, and if you water too much water, the banyan tree will cause root rot. The solution is to dig out the banyan tree, dry it in a ventilated place, cut off the rotten roots, disinfect and repot, prune the branches and leaves properly, and after about 10 days, the banyan tree will grow again. 3. The environmental pollution is more serious, and the solution is to move the potted banyan tree to a clean environment and clean the leaves.

Improper water damage to the banyan tree is great, too much watering, or high environmental humidity, will cause the root system of the banyan tree to rot, resulting in a large area of leaf loss. It is difficult to breed banyan trees in the north, and the humidity should be controlled in the family, and too low humidity will also cause yellow leaves and black leaves.

The banyan tree is suitable for growing in an environment with a small temperature difference between day and night, and the environment of wearing a leather jacket in the morning and yarn in the afternoon like Xinjiang is not suitable for the growth of the banyan tree at all. When the temperature difference is more than 10, there will be a large area of yellow and black leaves.

Therefore, in the usual maintenance process, the potted plants should be placed in a ventilated and light-transmitting position, and shaded in time in summer.

The main pests and diseases of banyan trees are: aphids, red spiders, scale insects, etc., when pests and diseases occur, the plants will be damaged to varying degrees, resulting in root rot or damage, which will cause the leaves to turn yellow.

When the leaves of the plant are yellow, check the growth of the roots to see if there are dead roots, rotten roots, damaged roots, etc. Spray pesticides in time for prevention and control.

Banyan trees like fertilizer, but the number of fertilization may be harmful to the growth of banyan trees. The light is yellow leaves, and the heavy is rotten roots.

During the growth period of the banyan tree, the amount of fertilizer varies depending on the season, and in winter it is reduced or not fertilized. Once a month in other seasons, choose to use thin fertilizer water, rather light than thick.