Why do potted roses grow white hairs on their leaves?

Why do potted roses grow white hairs on their leaves?

Many flower friends think that the leaves of the plants raised at home have white hairs on their backs, which are moldy and look like hairy fluff, and as soon as they let them go, the leaves will wither and wither.

Cotton bollworm. When the larvae develop, they secrete a white cotton wool-like wax substance, which is more common in April and July, and spreads quickly, hindering plant photosynthesis and causing leaf wilting.

Treatment: Prune the branches and leaves or sprinkle water to wash to increase the humidity of the plants, which can reduce the number.

Flower Friend Question: There are potted plants in the flowers raised at home.

The petiole produces a mass of white fluff the size of a grain of rice, which is not a cocoon that bears insects, and this white is not a fluffy caterpillar.

Is it? Does it affect other plants without affecting plant growth?

The plum insect is a very nasty pest that feeds on plant sap and is an east-winged insect, you know. Aphids.

It is the white fluff of one eye that contains wax that can be secreted to protect itself from rain. The excrement of the plum worm contains a lot of sugar, which is often sprayed on the leaves, causing the fungus to grow, and is a very nasty insect.

You can pinch them to death with your hands at first, but stick to it every day. Because bugs are small, they reproduce and grow quickly. Because if the killing speed is insufficient, it will be restored quickly.

Flower friends ask: There are white fluff on the branches and leaves of plant bonsai, white cotton balls or something, what is that?

If the plant or soil is not moldy, there is a high chance that the cotton scale insect will be blown.

Cotton bollworm is a very small, white, hairy parasite.

Plant sap can be absorbed, so that early deciduous leaves or branches do not grow well. Cotton bollworms usually hide in plant crevices or interlaced places, such as the back of leaves, under leaves, and even in the roots of plants.

Since puffs multiply very quickly, if they start to multiply, they should be chosen immediately (bamboo sticks or toothbrushes can be used). When tidying up the pots, keep them ventilated and pay attention to the presence of ants. (Ants are the drivers of powdery shellworms, carrying them to plants.) ）

It is very likely that the plant has pests and diseases, and the plant-specific insecticide should be used in time, evenly sprayed on the plant leaves, and can not be watered during the medication, otherwise the efficacy will be reduced, and it can be sprayed several times to consolidate it.

Mainly because there is no sunlight for a long time, and it may also be that there is too much moisture, and the drainage work is not carried out in time, so it will cause white hairs on the leaves, and it should be moved to a sunny place at this time.

Excessive evaporation of water, watering, not too much, put it in a place with cool air circulation for a few days, and breed it in a sunny place. Choose the right soil, which is loose, drainable, and aerating. Give it more than 4 hours of light every day.

It shows that the potted plant of this rose has some bacterial interference, and you can buy some chemicals to prevent and control it, which can play a certain role.

The white stuff on the leaves of roses is white spots, which is mostly caused by the discomfort of the growing environment provided.

For example, if the plant is kept in a humid environment for a long time, coupled with poor ventilation and stuffiness, such an environment is easy to breed germs, which will infect the plant and lead to diseases. In the later stage, leaf spot, powdery mildew, etc. will gradually form, and there will be powdery powder and white spots on the leaves.

Cure white spot rose leaves:

1. Prune: After finding that it is sick, prepare a pair of scissors to cut off all the leaves with white spots on it. If there are branches that have become dry, they need to be pruned together.

After that, it is removed from the original pot, the soil on the root system is removed, and the rotten or black rotten roots are removed.

2. Disinfection and replanting: After cutting, apply some sterilization solution to all its cuts to avoid it from being infected with bacteria. Then, make some new flower soil out of humus, fine sand and vegetable garden soil and plant it in it.

This prevents the plants from being re-infected by the remaining germs in the old soil. After that, put it in a warm, well-ventilated location and spray the disinfectant every 3-5 days. It will be restored shortly.

White marks on the leaves of roses may indicate powdery mildew, and at the beginning of the disease, there will be a little white powder on the back, and in the later stage there will be yellowish spots on the front part of the leaves, and in the later stage the leaves will appear distorted. It is necessary to spray in time** and cooperate with the pruning of leaves.

When this phenomenon occurs, it is necessary to treat it in time. Cut off all the leaves that have white powder on them. If some branches have become dry, they should be cut off and the diseased leaves and dead branches should be removed to avoid infection.

Precautions for rose planting.

The pruning time of roses is after flowering, it is best to lower it, but it should be determined according to the buds and tree strength, the weak tree is cut from the strong buds to promote the strong branches, the tree is stronger and the weak buds are cut from the weak buds to make the tree balanced, and the messy branches are cleaned up after flowering. When the tree is balanced, the flowering will be even. In addition, new roses often emerge from the ground near the old plant, so it is best to cut them off and plant them again in the second year, which is beneficial to both plants.

Potting soil replacement: Turn the soil deep before planting, and disinfect the soil with chemical bitterness to make the soil and fertilizer completely mixed. The furrow is 12cm wide, the furrow is 40cm wide, and the furrow is long. The soil should not be beaten too finely, too fine and poor, resulting in slow seedlings and slow growth in the later stage.

Is it powdery mildew? There is a medicine that is sold and sprayed on the leaves.

The white frost on the leaves of roses is mostly caused by improper environment, and it is easy to breed germs when placed in a humid, poorly ventilated and stuffy environment for a long time, and will be infected with leaf spot, powdery mildew, etc., which seriously hinders growth. In this case, it is necessary to prune off the diseased leaves and branches as soon as possible to prevent infection. It is also necessary to spray the drug, you can choose powder, spray it several times.

In addition, it is necessary to strengthen management in the later stage, ventilate more, let the plants bask in the sun, and control the humidity well.

The white frost on the leaves of roses is mostly caused by improper environment, and it is easy to breed germs and infections when placed in a humid, poorly ventilated and stuffy environment for a long time, which can lead to powdery mildew and leaf spot. Once infected, white powder and white spots are left on the leaves, which seriously hinder growth.

Second, how to treat the white frost on the rose leaves.

1. Prune as soon as possible: once the rose is infected with a disease, it should be pruned as soon as possible. It is necessary to cut off all the leaves with white powder, and some dry branches should also be cut off to reduce the pathogen and avoid the aggravation of the disease and the transmission to the healthy branches and leaves.

2. Spraying drugs: After pruning treatment, drugs should be sprayed, and Bordeaux liquid or stone sulfur mixture can be sprayed for prevention in the early stage. Once infected, powdery mildew should be sprayed to control powdery mildew and avoid the spread of the disease and hinder growth. In addition, management should be strengthened in the later stage.

3. Later maintenance: the plants should be planted in a place with good ventilation environment, and the humidity should be well kept warm and moisturized, and the humidity should be controlled. During the growing season, fertilizer should be applied frequently, and Bika water-soluble fertilizer can be selected to promote vigorous growth and improve disease resistance.

In addition, it should be exposed to the sun more often, and it must not be placed in a cool and damp place to avoid reinfection.

1. What is the white thing on the leaf Naxun?

White spots on the leaves of roses are often caused by the unsuitable growing environment provided. For example, if plants are kept in a humid environment for a long time, coupled with poor ventilation and stuffiness, such an environment can easily breed germs, infect plants, and cause diseases. In the later stage, leaf spot, powdery mildew, etc.

It will form gradually, and powdery powder and white spots will appear on the leaves.

Second, how to treat.

1.Timely pruning: This phenomenon should be dealt with in time.

Cut off all the leaves that have white powder on them. If some of the branches have become dry and dry, they should be cut off and the diseased leaves and dead branches should be removed to avoid infection. 2.

Replanting: After pruning, remove the plant from the chain sensitive pure pot and prune the roots. The rotten and blackened roots should be cut off and sterilized.

After that, prepare a pot of new soil, which must be loose and breathable. The treated plants are then buried and replanted. 3.

Post-maintenance: After planting, put the plants in a well-ventilated environment, control the temperature, keep them moist, do not rush to bask in direct sunlight, and wait for normal management after growth recovery. In the later stage, pay attention to the maintenance of the environment, usually ventilate more, and spend more time in the sun to avoid reinfection.

1. Causes of vitiligo.

There are white spots on the leaves of roses, which may be due to the fact that the place where they are usually raised is too humid and not well ventilated. In this environment, it is easy to breed germs and infect plants, leading to powdery mildew, leaf spot and other diseases. After the disease, the leaves will appear with visible white spots or white powder.

Second, the treatment method.

1.Pruning: When you notice that it is sick, the first thing to do is to prepare a pair of scissors to cut off all the leaves with white spots on it.

If there are branches that have dried out, they need to be cut off together. After that, it is removed from the original pot, the soil is removed from the roots, and the rotten or blackened roots are cut off. 2.

Disinfection and replanting: After cuttings, apply some disinfectant to all cuttings to avoid bacterial infection. Then use humus, fine sand, and garden soil to prepare some new flower soil and plant it in it.

This prevents the plants from re-infecting the plants with germs that remain in the old soil. After that, put it in a warm place with a ventilated limb and a yard, and spray it with disinfectant every 3-5 days. It will be restored soon.