How to deal with the yellow leaves and black tips of orchids? What causes the tip of the black leaf

The black tips of the yellow leaves of orchids are generally caused by stagnant water, exposure to the sun, stuffiness, and uncomfortable temperature.

1. Drainage: Drain the stagnant water in the pot as soon as possible, check whether there are rotten roots, cut off the rotten roots, disinfect and dry them and re-pot.

2. Shading: Move to a place of astigmatism, and you can also use something to block the strong light.

3. Ventilation: Indoor windows should be often opened for ventilation, or moved outdoors to raise.

4. Adjust the temperature: adjust the temperature between 16-24, cool down in time in summer, and keep warm in winter.

1. Adjust the temperature.

Reason: The orchid is not hardy, and if it is attacked by low temperatures, its roots and branches will stop working, and the tips of the leaves will turn black.

Solution: Move it to a warm place in winter to avoid frostbite from low temperatures. Don't rush to move out in the spring, because the temperature is unstable in early spring, and there are often cold snaps, so when the temperature is completely stable, move it outside.

2. Proper shading.

Reason: It does not like strong light, and if it is directly irradiated by a strong sun, the leaf tip will turn black.

Solution: It needs to be exposed to astigmatism, and it should be properly shaded when the sun is heavy at noon. In winter, the daylight is relatively short, and the sun is not strong, so there is no need for shade, so it can receive all-day sunshine.

3. Reasonable watering.

Reason: Orchids are not waterlogged, and too much watering can easily make the potting soil accumulate water, which will affect its root respiration, and the tips of the leaves will turn black.

Solution: Watering should not be too much, once a day when the temperature is high, and once every two days when the temperature is low.

Fourth, reduce fertilization.

Reason: Orchids do not like thick fertilizer, which is easy to burn the roots, and if there are health problems, the leaf tips will turn black.

Solution: Fertilize with light fertilizer, and fertilize about ten centimeters away from the roots, so that the roots will not be burned. When watering, pour water on the fertilizer so that the water spreads out with the fertilizer so that it can absorb it.

Orchid farming techniques.

1. Use loose and fertile, rich organic matter-rich soil, and the suitable temperature for growth is 10-25, and about 0-10 in winter. Do not shine in direct light, it likes scattered light, and needs proper shading.

2. The growth environment should be kept with sufficient humidity, but the amount of watering should not be too large, and it is best to apply special fertilizer for orchids. After the occurrence of pests and diseases, it is necessary to use them in time to prevent and control, and ensure that the environment is ventilated.

Orchids are very popular with the majority of flower friends, but when we raise orchids at home, there is always a phenomenon of dry tips and yellow leaves, have you ever encountered it?

Orchids appear black leaf tips, optimistic about these 4 points, quickly find the cause.

1. Water control and loosening soil: strictly control the moisture for orchids, and place the loose soil in a ventilated place for maintenance after drainage. 2. Reduce light:

Keep the orchid in an environment with plenty of astigmatism and avoid exposure to the sun. 3. Reduce the amount of fertilizer: pour large water into the soil and dilute the amount of fertilizer.

4. Pruning and repotting: cut off the rotten roots of the orchid, repot and replant.

1. Water control and loosening soil

Orchids suffer from waterlogging will appear yellow leaves and black tips, to strictly control the water, after the potting soil is dry, and to loosen the soil for orchids, dredge drainage holes, drain the water accumulated in the soil, and then put the orchids in a well-ventilated environment to speed up the evaporation of water.

2. Reduce light:

Orchids like semi-shaded environment, the process of breeding to receive strong light irradiation, will lead to the peripheral leaves of the yellow leaves and black tips, at this time to move the orchid into the environment with sufficient astigmatism to provide scattered light for the plant, and to cut off the yellowing leaf tips to maintain the beauty of the plant shape.

3. Reduce the amount of fertilizer

Orchids have a small demand for nutrients and are not tolerant of concentrated fertilizers, and applying too concentrated fertilizer to them during breeding will cause the plant to appear fertilizer burns, and the leaves will be yellow and black, so you need to water the soil with a lot of water, wash away the excess fertilizer, and then put the orchid in a ventilated place to let the plant resume growth.

4. Prune and repot

After the orchid has rotten roots, it will have yellow leaves and black tips, dig it out of the potting soil, cut off the old roots, weak roots, wounded roots and rotten roots with sterilized scissors, and then apply carbendazim solution to sterilize, and then put the orchid in a cool place, wait for the wound to heal and replant it in the new potting soil.

The blackening of the tips of the orchid leaves may be caused by strong light exposure, so the orchid needs to be transferred to a ventilated and cool place for astigmatism. The blackening of the tips of the leaves of the orchid may also be caused by a lack of water, so it is necessary to water the orchid in time to keep the soil in a moist state. Disease attacks can also cause the tips of orchid leaves to turn black, so you need to prune off the blackened leaves and spray them with pesticides**.

The leaf tips of orchids turn black when exposed to strong light. Therefore, it is recommended to place the orchid in a ventilated and cool place for maintenance, and when the light is too strong in summer, it is necessary to build a shade net above the orchid to reduce the intensity of the light, so that the orchid can grow and develop healthily.

Orchids are suitable for growing in a humid environment, and the lack of water will cause the tips of the orchid leaves to appear black. At this time, it is necessary to replenish water for the orchid in time until there is water flowing out at the bottom of the pot, in addition, the bud of the orchid should not be exposed to water when watering, so as to avoid the bud rotting.

Orchids are less resistant to disease and are susceptible to infection by pathogens during their growth, resulting in black leaf tips. In this case, use sterilized scissors, trim the yellowed leaves, and destroy them with fire. After pruning, the leaves need to be sprayed with carbendazim solution once**, and the orchid will be healthy after three consecutive sprays.

Excessive fertilization can also cause the roots of the orchid to be burned, resulting in the leaves not being able to absorb nutrients, and the leaf tips will turn black. At this time, it is necessary to dilute the fertilizer in the soil by watering water in time, and properly transform the soil to allow excess fertilizer water to flow out of the bottom of the pot.

The tip of the leaf of the potted orchid is dry or even the whole leaf is wilted, the main reason is orchid anthracnose and round spot. The disease occurs in large quantities in the rainy season or at the turn of summer and autumn when it is high temperature and rainy, and can be sprayed with 50% carbendazim 1000 times or 50% grammedan500 times solution in the prone period, once in 10 days, sprayed 3 or 4 times in a row for prevention. Families can purchase small packets of bactericidal pesticides.

When orchids suffer from frost damage or late frost, they are also prone to dry up or discoloration of leaf tips. Therefore, in areas where the temperature is below 0 in winter, the orchids should be moved indoors to a ventilated sunny place before winter. When moving outdoors in spring, care should be taken to avoid the damage of late frost.

The traditional experience of "no wind in spring, no day in summer, no dry in autumn, and no wet in winter" is very good for preventing orchid leaves from drying out.

The yellowing and blackening of the tips of the orchid leaves may be caused by black spot disease, which can cause dark black spots to appear on the leaves as the disease progresses. In the early stage of orchid disease, some diseased leaves can be removed and sprayed with carbendazim solution**. In the process of later maintenance of orchids, it is necessary to give about 8 hours of astigmatism irradiation, and apply 1 or 2 thin liquid fertilizers every month to make orchids grow healthily.

The yellowing and blackening of orchids may be caused by black spot disease, in the early stage of the disease, there will be yellow-brown or purple-brown dots on the leaves, as the disease expands, it will expand to dark black black spots, and finally in severe cases, it will cause the plant to appear yellow.

When it is found that the orchid suffers from black spot disease in the early stage, when the disease is relatively mild, the diseased leaves can be removed, and the multi-bacterial solution can be sprayed for sterilization and disinfection, and then the orchid can be transferred to a ventilated environment for maintenance, and the leaves will return to green after a period of time.

When the black spot disease is more severe, it is necessary to prune off the severely diseased leaves in time, and after the pruning is completed, it is necessary to spray the drug on the leaves**, you can spray 1 2 times a week after the diluted Bordeaux solution or methyl tobuzin solution, and the spraying can be stopped when the disease is eliminated.

In order to avoid the appearance of black spot disease, the orchid needs to be placed in a bright place for maintenance, given about 8 hours of light, and the room temperature is controlled at more than 10, and the soil needs to be properly watered and moisturized after it is found to be dry, and it is necessary to apply 1 2 times of thin liquid fertilizer every month to supplement nutrition. So that the orchid can grow vigorously.