What should I do if there is a yellow spot on the leaves of tiger piran?

What to do with tiger pill orchid yellow leaves? A few tips to bring Tiger Piran back to life.

Lack of water, or large water, and lack of trace elements, can cause the leaves to turn yellow.

It's better to uproot.

1. The leaves of the tiger pill orchid are spotted and yellow, which should be due to leaf spot disease.

2. Leaf spot disease of Saxitail orchid invades leaves. It produces near-round lesions on the leaves, up to 12 millimeters in diameter, slightly gently depressed, light reddish-brown, with pale yellow edges. Diseased spots are scattered, all over the whole leaf, the spots are dried and fall off, and sometimes the lesions converge with each other to cut the leaves, so that the diseased parts are dead above.

Some of the lesions are confined to one side of the leaf, and the surface is raised and tethered. Disease spots that occur on leaves near the ground cause local rot and lodging the plant when they expand.

3. The growth temperature of pathogenic bacteria is 8 to 32 degrees Celsius, and the optimal temperature is 28 degrees Celsius. Saxifrage orchid is potted indoors, with poor ventilation, excessive watering, and high temperature and humidity are the most prone to disease. There is a wide range of pathogen hosts.

Fourth, prevention and control methods:

1. Cut off the diseased leaves and destroy them.

2. Avoid water on the leaves when boiling water to reduce the infection of germs.

3. At the onset of the disease, spray 752 chlorothalonil 600 times or 502 carbendazim 100 times, spray once every 7 days, and spray 2 to 3 times in a row for prevention and control.

Tiger Piran Leaf Yellow Solution:

1. Pay attention to the watering method, do not water at noon, do not water on the leaves, do not water under the Ye Naxun Senzichang cherry, but pour it into the soil around the pot.

2. Change the pot once a year, change the pot in winter or spring, change the pot is conducive to increasing the nutrients in the pot, and bury the fertilizer at the bottom when changing the pot.

3. If the light is insufficient, move the tiger pill orchid to an outdoor sunny place for 2 to 3 hours every day, and photosynthesis is conducive to reducing the symptoms of yellow leaves.

4. Put it in the indoor sunny and ventilated place to reduce the occurrence of pests and diseases, and good ventilation is not easy to cause pests and diseases, which is conducive to solving the problem of yellow leaves of tiger piran.

5. Regularly loosen the soil, make the potting soil loose, breathable and drainage, which is conducive to the growth of the root system and solves the phenomenon of yellow leaves.

There are many reasons for the yellowing of tiger pill leaves: if it is caused by strong direct light, shading measures should be taken; If it is caused by the wrong watering method, then correct it in time and pour the water into the soil; If the amount of fertilizer is unreasonable, then apply fertilizer in an appropriate amount, once a month; If the amount of watering is unreasonable, then control the amount of watering.

1. Reduce light reception

Reason: Prolonged exposure to direct sunlight in summer can cause the leaves to turn yellow, and the leaves may become dry and unvigorated.

Solution: Take shade measures when the sun is strong in summer, don't let it be exposed to the sun for a long time, and spray some water appropriately when the weather is dry.

2. Correct the watering method:

Reason: Many people do not water the right way and water down from the position of the leaves, which will cause the leaves to turn yellow or have spots.

How to solve the problem of empty Zheng Kong: master the correct watering method, watering should not start from the leaves, it is best to water to the position of the soil.

3. Appropriate fertilization:

Reason: Some people do not grasp the amount of fertilizer they apply, and often apply too much fertilizer or too little fertilizer, which will cause its leaves to turn yellow for a long time.

Solution: Usually to apply the appropriate amount of fertilizer, not too much or too little, usually blind only once a month, if it is in the growth period can be increased appropriately.

4. Appropriate amount of watering:

Reason: watering more will appear waterlogged, less amount will lack nutrients, too much or insufficient watering will lead to leaf yellow, solution: as long as the soil is moist, no need to overwater, you can observe the pot soil slightly dry when watering, in winter to reduce the amount of watering, so as not to appear frostbite.

The leaves of the indoor-raised tiger pill orchid turn yellow, mainly due to the lack of light, too wet watering, hard potting soil, poor air circulation, insufficient nutrients in the pot and other reasons.

1: Potted tiger pill orchid is not like the ground plant to have long sunshine, can be placed indoors in a sunny position, conducive to photosynthesis to reduce the symptoms of yellow leaves. Move outside for two days a week, and the sun is better in the morning and evening for 1-2 hours a day.

Two: usually placed in the indoor sunny section of the open wind, reduce the occurrence of pests and diseases, good ventilation is not easy to cause pests and diseases, no pests and diseases can grow well.

Three: usually watering is not easy to be too wet, too wet is easy to cause root rot, produce yellow leaves die, it is best to do dry watering is not easy to cause disadvantage and burn the symptoms of rotten roots and yellow leaves.

Four: about 3 months of loosening the soil, so that the potting soil is loose, breathable and drainage, which is conducive to the growth of the root system and is not prone to the phenomenon of yellow leaves.

1. If the leaves of the tiger pill orchid are yellow, if the sun is too strong, it should be moved to a cool and ventilated place as soon as possible, and water can be sprayed around to cool down and promote recovery as soon as possible. If it is caused by watering too many roots, it is necessary to stop watering, remove pots and trim roots, and replant. If you get frostbite because the temperature is too low, you should move to a warm place as soon as possible and control the temperature above 10 degrees.

If there is fertilizer damage due to too much fertilization, it is necessary to pour water to rinse off the fertilizer.

2. Reduce light: Tiger Piran likes a semi-shady environment and is not sun-resistant. If it is left in direct light for a long time during the curing period, it will get sunburned and yellow leaves will appear.

Avoid direct light as soon as possible, move the tiger pill orchid to a cool and well-ventilated environment, and often spray water around it, which can cool down and promote its recovery as soon as possible.

3. Proper water control: Tiger Piran contains more water inside, and its drought tolerance is very strong. If it is watered frequently during maintenance, it is easy to have water accumulation in the form of boys, resulting in root rot.

Once the root system rots, it is easy to have soft, yellow, and dry leaves. It needs to be unpotted as soon as possible, prune off all the rotten roots, dry the wound and then plant it in a pot. Note that the water must be properly controlled in the later stage, and do not water it at will if it is not dry.

4. Reasonable temperature control: The cold resistance of tiger pill orchid is very poor, the temperature in winter is low, if the temperature cannot be controlled in time, it will be frostbitten in an environment below 5 degrees for a long time, and yellow leaves will appear. It is necessary to move the tiger pill orchid to a warm place as soon as possible, and the temperature of the environment should be above 10 degrees, so that it can recover slowly and safely survive the winter.

5. Reasonable topdressing: Tiger Piran needs nutrients during the growth period, and it is necessary to top dressing in time, but it must be applied diligently with thin fertilizer. If the amount of fertilizer applied is too large or the concentration is too high, it will cause fertilizer damage, which will cause yellowing of the molded leaves.

In this case, the fertilizer should be stopped, and the fertilizer should be rinsed with water.