What is the harm of small black flies to succulents

What is the harm of small black flies to succulents?

Xiao Heifei is actually not harmful to succulents, but it is very annoying to watch. But the larvae of the little black fly are very harmful to succulents, he will gnaw on the roots of succulents (the wound may cause infection and then rot), gnaw on the young leaves of the succulents, and worst of all, some of the seedlings that are sown are the objects of his favorite feasting, and when they eat, they often eat them away. Taking leek root maggot as an example, leek root maggot also belongs to the family of sharp-eyed mushroom mosquitoes, and the larvae damage the leaf sheath, young stems and young shoots of leeks in spring and autumn, and the leaves of the plant turn yellow and cause rot after being damaged. In summer, it moves downward and borers into the bulbs, which can lead to the rot of the bulbs when the damage is serious, and then cause the death of the whole leeks.

Therefore, if you see your little black fly raging one day, and after a while, your fleshy will have an accident again, and you will have its credit.

Spider mites. It mainly harms succulents of the family Radiaceae, Euphorbiaceae, Asteraceae and Liliaceae. Sucking the juice of young stems and leaves with mouthparts, the infested leaves appear yellow-brown spots or withered yellow and fall off, this scar will never fade, generally speaking, you can see if there are spider webs on the back of the leaves, and there are very small red, white and dark insects, if there are usually red spiders.

Scale insects. The damage is very wide, often harming succulents such as Agave and Twelve Volumes with compact leaf arrangement, sucking the sap of stems and leaves, resulting in poor growth of the plants, and wilting and death in severe cases. It has an earlier prevalence than spider mites and often breeds in large numbers in early spring.

But it is also easy to control, that is, it is often concentrated on a few plants, sometimes one plant is covered with scale insects, and the neighboring plant has none.

Whiteflies. The harm is not large, more occurs in the Euphorbiaceae of Caiyun Pavilion, Tiger Thorn Plum, Jade Kirin, Emperor Jin and other shrub-like succulents, stabbing sap on the back of the leaves, causing the leaves to turn yellow, falling off, and at the same time induce coal stain disease, there will be a large area of unsightly black powder on the stems and leaves, which directly affects the ornamental value of the plant.

Xiao Heifei has almost no effect on flowers and plants, but it will affect the mood when you look at it. However, its larvae eat the root system of plants, especially succulents, and will also eat young leaves, which is more harmful to plants.

Once the plant is damaged, the phenomenon of yellow leaves will appear, which can also cause rot and even cause the plant to die. Therefore, it must be treated as soon as possible after discovery, and it must not be allowed to continue to reproduce.

The dangers of the little black fly:

The scientific name of the little black fly is the sharp-eyed mushroom mosquito, which prefers to move in humid environments. Although it does not bite, it will affect hygiene and damage the living environment.

Once it breaks out, it can seriously affect the mood. If you have flowers and plants at home, you must not place the remaining peels, kitchen waste, tea residues and other unfermented organic matter next to the plants, otherwise it is easy to attract small black flying.

There is a "little black fly" in the flower pot, which affects the mood of flower appreciation, teaches you not to spray, and can also put an end to the little black fly.

It is not harmful to most plants, but it is said that many newly sown seedlings will be eaten by the larvae of the small black fly and die.

There is a "little black fly" in the flower pot, which affects the mood of flower appreciation, teaches you not to spray, and can also put an end to the little black fly.

Little Black Fly Method One.

1. Prepare plant ash (plant ash is actually the ash left over from burning straw and other planting materials).

2. Sprinkle the plant ash on the surface of the potting soil, spray a little water to let the plant ash melt.

3. Some netizens have practiced, this method is really good, but it is very difficult to find in the grass and ash city.

Method 21: Prepare drugs to kill the little black fly, such as carbofuran, soil worm, mycete, dimethoate, Bacillus thuringiensis and so on.

2. Dig a few small holes on the surface of the soil, and then bury a few grains of these medicines.

3. Or dilute these drugs a thousand times and irrigate the roots, which can kill the eggs in the soil.

Method 31: When fertilizing flowers and plants, choose special flower fertilizer or chemical fertilizer, and do not use your own fertilizer.

2. Whether it is the soil bought back or the soil dug out, it must be spread out and exposed to the sun for 1 2 days after getting it back, and if necessary, it can be dried for 3 or 4 days, and the high temperature can be used to kill the eggs.

3. Before the arrival of summer, spread a layer of fine sand on the surface of the plant to prevent the small black fly from laying eggs on the soil.

Method 41: If there are people who smoke dry tobacco at home, they can use tobacco leaves to soak in water.

2. Stuff the plastic bottle with half a bottle of tobacco leaves, then fill it with water and soak it for about 2 days.

3. When watering flowers and plants, it is good to use tobacco leaf water directly, and the effect can be clearly seen after watering once.

After 4 days, you can water it again once, and it's basically the same, if you don't worry, you can water it a third time