How to raise Japanese begonia potted plants with black leaves on the edges of the leaves?

The first is because of the lack of water, the soil must be very dry at this time, and it is necessary to water it in time; The second is that there is too much fertilizer added, and the flowers cannot absorb it, and they are burned; Third, because there are a lot of insects in the soil or flowers, it is necessary to remove them with insecticides in time.

Water more. Blackened fallen leaves indicate a lack of water, and you must replenish plant water in time.

The first possibility is that there is not enough water, causing the leaves to dry up. The second possibility is that there is too much light, the light is too strong, and it burns the plant itself. The third may be because of pests and diseases, and it is necessary to spray drugs regularly**. Fourth, the nutrition is not enough, and various chemical fertilizers need to be added to supplement the nutrition.

The blackening of begonia leaves may be caused by excessive watering, too strong light, improper fertilization, and virus infection, which requires an appropriate amount of watering, maintained in a semi-shady environment, and shaded in the summer when the light is strong, and it is necessary to spray pesticides in time to prevent land demolition virus infection, and the blackened leaves should also be pruned off in time, so that the plant can continue to survive, if the main stem has withered, it is difficult to survive.

What's wrong with the black leaves of begonia flowers.

1. Excessive watering: Begonias like a moist environment, but they are afraid of waterlogging, avoid stagnant water, such as too much watering, if the potting soil is too wet, its roots will rot, making the leaves black.

2. Strong direct light: Begonia likes a semi-shady environment, and if the light is too strong in summer, it will burn the root system, causing the leaves to turn black and the leaves to shrink.

The reason why the leaves of begonia flowers turn black.

1. Lack of fertilizer or fertilizer: Begonia flowers need sufficient nutrients during the growth period, and insufficient fertilizer or excessive fertilizer will cause the leaves to turn black.

2. Soil: Begonia likes loose, well-drained slightly acidic soil with good eggplant dust, if the soil is alkaline, the leaves are blackened and the flowers become soft.

Remedy for blackening of begonia flowers.

The blackened leaves of begonia flowers may be due to virus infection, begonia rust or rot disease, which needs to be sprayed in time, and the blackened leaves should also be pruned off in time.

Most of the begonia leaves turn black to live, but if its trunk has withered, then it has to find a way to reproduce again.

Do you want to cut the black leaves of begonia flowers?

The blackening of the leaves of the begonia flowers should be cut off, if it is just beginning to be blackened, but there is such a situation on the edge of the leaf surface, only the blackened part will be cut off, but if the whole leaf is blackened in a large area, the whole leaf must be cut off to avoid the continuous consumption of nutrients on it.

Small spots on the leaves of Japanese begonias, poor air permeability, spraying on the foliar surface, less sunlight, causing leaf spots. Causes of dry wilting, repotting root damage, hydrocephalus basin bottom, etc. ** Flowers in a sunny location, open windows for ventilation, stop spraying, pots and tray pads at a distance of 2 cm, so that the potting soil oxidizes and grows rapidly new roots.

The needle can also be used to potting soil B12 people, Cheng 7 days together with 3 together. Nutrient capillary roots. It can also be watered with rainwater, which has rooting components and deep leaves.

Other flowers wilt, carbendazim mixed with water 600 times, once every 7 days, 3. You spent promising flourishing.

Is that a spot? Is it an aphid? It should be an insect infestation.

Because there are many reasons for the yellowing, blackening, and leaf loss of begonia leaves, changing pots is not necessarily a solution.

First, the soil is unsuitable.

Reason: Begonia likes acidic soil, if long-term watering will lead to soil alkalinization, easy to become compact, growing in such soil, the roots are difficult to adapt, it will affect the function of absorption, can not absorb water and nutrients normally, and the leaves will also yellow and fall off.

Solution: Replace the unsuitable soil and prepare a new acidic soil. Or add acidic substances dropwise, and properly loosen the soil to keep it loose.

2. Improper watering.

Reason: Insufficient or too much watering will cause the leaves of begonias to turn yellow and charred, and if they are not watered for a long time, the soil is very dry and cannot absorb water. If you water too much, the water will be very serious, and the roots will rot and the leaves will turn yellow and fall off.

Solution: Apply water correctly to ensure that water can be used for growth, but not too much water, and promote water discharge when applying too much water.

3. Improper fertilization.

Reason: Sufficient nutrients should be used for growth, too much fertilization will lead to fertilizer damage, and the leaves will turn yellow and dry up. If you don't give fertilizer all the time, you will also lack nutrients, causing the leaves to turn yellow.

Solution: Pay attention to the frequency of fertilization, the nutrition is not enough, you need to apply Bika water-soluble fertilizer appropriately, and if you apply too much fertilizer, you should water and dilute it.

Fourth, improper lighting.

Reason: Light is also one of the reasons, long-term lack of sunlight, plant growth and development is stunted, resulting in yellowing and falling off leaves. This can also occur when exposed to bright light can cause burns.

Solution: Give appropriate light, contact more sunlight when growing vigorously, and pay attention to light blocking in summer.

This should be a problem with the roots, unable to absorb water and only able to fall leaves, knowing that you must control watering.

The main causes of leaf yellowing and wilting and emergency methods:

Pay attention to fertilizer, water and light damage. First aid method of fertilizer damage: if the leaf color of the plant leaves is too dark green, and the leaves have blistering at the same time, and no longer budding, this is the phenomenon of excessive fertilization, and then fertilization will produce fertilizer damage, and fertilizer should be stopped immediately; When the fertilizer damage is serious, it can be rescued by soaking in water.

The method is: first loosen the soil and rinse it with long running water for half a day, which can generally be effective once or twice. Water Hazards:

Just stop the water and loosen the soil to ensure that the planting soil is hydrophobic and air-draining. Light damage: Most people think that money trees can be planted indoors in full shade, in fact, any plant needs proper light, in order to ** plant photosynthesis, it is inevitable to give proper sunlight.

Japanese Begonia Conservation and Cultivation Method:

Generally, there are many rows of ground planting, but it can also be made into pile scenery for potted plants. The planting period is suitable before budding in early spring or after falling leaves in early winter. When the seedlings are out of the nursery, maintaining the root system of the seedlings is one of the keys to the survival of the planting.

Generally, the large seedlings planted should be brought with soil balls, and the small seedlings should be left in the soil according to the situation. After the seedlings are planted, the tending management should be strengthened, and the soil should be kept loose and fertile. In autumn and winter every year, a batch of pond mud or fertile soil can be changed at the rhizosphere.

Prune once after leaf fall and before budding in early spring to remove weak branches, diseased and insect branches to keep the canopy evacuated and ventilated and transparent. In order to promote the vigorous flowering of plants, it is necessary to shorten the long branches to reduce the nutrient consumption of germination, so that the remaining axillary buds can obtain more nutrients and form more flowering and fruiting branches. Fruiting branches and middle branches do not need to be pruned.

During the growth period, the effect is more significant if topping can be carried out in time and vegetative growth can be restricted in the early stage. The pile landscape of potted plants should be controlled in this way.

In case of spring drought, irrigation should be carried out 1-2 times, and attention should be paid to the control of beetles, leaf rollers, aphids, bag moths and red spiders and other pests, as well as rot disease, red star disease, etc.

Improper watering or too strong light and too high temperature, can not be directly exposed to the sun in summer, should be taken out in the morning to dry, too strong sun to take in, maintain sufficient moisture and appropriate fertilizer.

The fertilizer or soil changes a lot, and the roots are spoiled.