What causes black spots on aloe vera leaves?

One. The sap dripping from the incision of the aloe vera leaf is yellowish-brown and turns black when oxidized by air. Estimate that your aloe vera has sap spots coming out.

Two. Potassium deficiency, sprinkle some soot.

Three. Too much watering. Aloe vera is the best plant to raise, dry and watered, this is a lazy plant. Aloe vera is very vigorous, extremely easy to nourish, its growth characteristics are like sunlight, but afraid of the sun; Likes moisture, but avoids stagnant water; Resistant to high temperatures and cold.

1. Reduce watering, 1-2 times a week.

2. Do not let the leaves touch the soil.

3. Anti-freezing. 4. Let the aloe vera bask in the sun more often, not in the sun.

Specific cultivation :

Aloe vera is a tropical plant, and its biggest disadvantage is that it is cold-inducing. But in addition to being afraid of cold, it is a plant with strong fertility and is not squeamish. As long as it is not subjected to frost and snow, it is usually watered with some water and occasionally fertilized, and the survival rate is very high. So it's easy for everyone to grow.

Soil and fertilizer.

The ideal soil for aloe vera planting is mainly swamp soil and sand, and it is enough to add humus soil, grass ash and shell flakes. Clay is not good for drainage and should be avoided as much as possible.

If the soil contains fertilizer, there is no need for fertilizer at all.

Watering To plant aloe vera, the most important thing is not to use too much water, otherwise it will weaken the medicinal ingredients and in severe cases, it will cause the roots to ulcerate.

In spring, it is generally watered every 5 days; In the hot summer, water once a day when the sun goes down; Watering in autumn is the same as in spring; In winter, aloe vera is almost dormant, and the soil on the surface is simply wet.

Wintering method Aloe vera is safe to overwinter at temperatures above 5 degrees. At sub-zero temperatures, the moisture in the leaves will quickly freeze.

It may be a rot disease, and it is best not to water it directly on the leaves when watering, and it doesn't matter if you spray it.

Aloe vera leaves have dark spots because they have black spots. It is a disease caused by fungi and is easy to get in a high temperature and humidity environment.

Cultivation methods and precautions.

1. Pruning and destruction: After finding that aloe vera is diseased, it must be cut off as soon as possible, and the cut leaves need to be concentrated and burned to avoid the spread of germs leading to it. After pruning, the cut should be disinfected, and grass ash can be applied to it to avoid infection.

2. Ventilation and humidity reduction: If you want to avoid aloe vera disease, you must maintain good ventilation, especially when the humidity is high, by accelerating air circulation, you can reduce its humidity, reduce the possibility of germ breeding, and at the same time, for the plants that have been diseased, it can also curb the deterioration of the disease.

3. Pay attention to spraying: In the high incidence period of black spot disease, it can be effectively prevented by spraying in advance. Common drugs are methyl tobuzine and carbendazim, which need to be mixed with a certain proportion of water according to their concentrations, diluted and then sprayed.

It is usually sprayed once a week for three weeks.

4. Daily management: Provide good daily management for aloe vera, which can improve the disease resistance of plants. First of all, pay attention to the temperature, keep it above 8, and let it be fully exposed to light.

Usually, you can supplement Bika silica dissolved potassium dihydrogen phosphate or zebsen zinc to improve its disease resistance, and do a good job of drainage in the rainy season.

Reasons: 1. The juice of aloe vera flows out: the juice dripping from the incision of aloe vera leaves is yellow-brown, and it will turn black when oxidized by air;

2. Potassium deficiency; 3. Excessive watering: aloe vera is very vigorous, extremely easy to nourish, and its growth characteristics are that it likes sunlight, but is afraid of scorching sun; Likes moisture, but avoids stagnant water; Resistant to high temperatures and cold.

Solution: 1. Reduce watering, watering 1 to 2 times a week;

2. Do not let the leaves touch the soil.

3. Anti-freezing. 4. Let aloe vera bask in the sun, but don't expose it to the sun;

5. Sprinkle an appropriate amount of soot.

Reasons: 1. The juice of aloe vera flows out: the juice dripping from the incision of aloe vera leaves is yellow-brown, and it will turn black when it is oxidized by air;

2. Potassium deficiency; 3. Excessive watering: aloe vera is very vigorous, extremely easy to nourish, and its growth characteristics are that it likes sunlight, but is afraid of scorching sun; Likes moisture, but avoids stagnant water; Resistant to high temperatures, afraid of severe hunger and cold.

Solution: 1. Reduce watering, watering 1 to 2 times a week;

2. Do not let the leaves touch the soil.

3. Anti-freezing. 4. Let the aloe vera bask in the sun, but don't expose it to the sun;

5. Sprinkle an appropriate amount of soot.

When aloe vera has dark spots, it is necessary to prescribe the right medicine in time, if it is caused by the juice on the hands, clean up the spots and maintain them normally, stop watering if they are too watered, change the soil when they are serious, keep the foliar clean if they are poorly ventilated, often strengthen the indoor air circulation, and do a good job in the prevention of diseases.

1. Normal maintenance

Aloe vera is a common potted succulent plant in the family, which is rich in sap, once the plant hands will drip down to become yellow-brown, and it will turn black when it encounters the maintenance in the air, and finally will lead to black spots, at this time, the spots should be cleaned up in time, and the wound should be disinfected to prevent infection.

2. Stop watering

Aloe vera itself has a strong drought tolerance, if too much watering will lead to too much water in the potting soil, the root system will grow poorly, resulting in a lot of spots on the stems and leaves, at this time should stop watering in time, serious words to carry out appropriate soil change treatment, and then watering should be kept not dry and not watered, watering is the principle of watering thoroughly.

3. Pay attention to ventilation

The stems and leaves of aloe vera are more sensitive to changes in the environment, if they are placed in an environment with more smoke and dust during the growth period, or poor ventilation, it will lead to a lot of black spots on the stems and leaves, which is also one of the reasons why there are black spots on aloe vera, it is best to keep the leaves clean at ordinary times, and also pay attention to ventilation to facilitate the photosynthesis of the leaves.

4. Prevention of pests and diseases

When aloe vera suffers from anthracnose, brown spot, leaf blight, rust and other hazards, there will be a lot of irregular lesions on the leaves, and black patches will be formed after a long time.