Hu Dielan found the yellow leaves and hurriedly basked in the sun?

Hello, Phalaenopsis yellow leaves can be caused by overwatering. At this time, the plant should be depotted, the rotten root system should be cut off with scissors, and then it should be placed in a ventilated place to dry and replanted. It can also be caused by too much light.

At this point, it is necessary to move the pot to a semi-shaded environment, cut off the severely yellowed leaves, and wait for it to grow new leaves. It can also be due to nutritional deficiencies. At this time, it should be replaced with a more fertile substrate and provide nutrients for the top dressing at the right time.

Causes and treatment of Phalaenopsis yellow leaves.

1. Overwatering.

1. Reason: Phalaenopsis likes to be moist, but it cannot grow in a substrate that is too moist and contains stagnant water for a long time. Because stagnant water will soak its root system and affect its normal growth. If it is overwatered during maintenance, it may cause it to rot roots and yellow leaves.

2. Treatment method: first take the plant out of the substrate with stagnant water, and use scissors to cut off the rotten root system at the bottom. Then treat its roots with disinfectant, dry it in a well-ventilated place, and plant it in a new substrate with good permeability.

Second, the light is too strong.

1. Reason: It prefers mild sunlight and cannot be exposed to the scorching sun for a long time. Otherwise, its leaves will be burned by strong light, and the problem of yellowing and drying will appear.

2. Treatment method: first move its pot to a semi-shady environment, cut off the completely yellowed leaves on it, and keep it warm and ventilated. It won't be long before it will be able to grow new leaves.

3. Insufficient nutrition.

1. Reason: If the fertility of the substrate is very low, and when breeding, there is no timely fertilization to provide it with nutrients, it may also appear yellow leaves.

2. Treatment method: first depot the plant and plant it in a substrate with higher fertility. Then it is recommended to use the microbial agent plus rooting agent to provide nutrients during maintenance.

The yellow leaves found in Phalaenopsis are not necessarily due to lack of sunlight, but also to pests and diseases, or the height of watering.

Hu Die Lanxi is shady. You can't bask in the sun. After watering thoroughly, place it in a cool place to relieve it.

Hu Dielan found the yellow leaves and hurriedly basked in the sun? Phalaenopsis found that the seam also hurried to bask in the sun, I don't think it works. Phalaenopsis has autumn leaves, so you have to take it out on a rainy day.

The yellow leaves found in Phalaenopsis hurry up to bask in the sun, it shouldn't be that, the problem of basking in the sun may be whether there are pests and diseases?

At the same time, you also need to do it to supplement some nutrients, his one may be lacking in some fertilizer, and it will be better for his growth to make up some fertilizer.

This is not very good, because if you bask in the sun too quickly, it will be sunburned.

What should I do if the Phalaenopsis is yellow? Don't panic! Teach you how to handle it properly.

In fact, it is a problem of watering, because phalaenopsis does not need to be watered too often in summer, because this is its "semi-dormant" period, and it needs to be kept dry to a certain extent, only increase air humidity, and properly ventilate, and stop fertilization.

Strengthen management in autumn when the weather cools down.

Since phalaenopsis orchids are grown with moss, which absorbs water like a sponge, it is best to plant them in transparent plastic pots to see how wet and dry the moss is and to determine when to water it.

Once it is kept moist in summer, there will be root rot, and finally the leaves will shrink and wilt, and the phalaenopsis at this time has no maintenance significance!!

Especially in the summer, the situation is even worse if fertilizer is refertilized. Phalaenopsis is also known as Phalaenopsis. It is one of the most widely cultivated and popular species of orchids.

Its flowers are plump and graceful, bright in color, and can bloom for several months, with strong growth and easy cultivation. The root system is well developed, often clumpy, up to 50 cm long, flattened like a band. The stems are short and thick, without false bulbs, and are uniaxial orchids with growth points at the top, from which new leaves are drawn each year during the growing season.

There are many varieties of flower colors, including pure white, purple, white flowers and red lips, red spots on a yellow background, red spots on a white background, red stripes on a white background, etc.

Phalaenopsis is mainly potted, the roots require good aeration, planting should be shallow, fill the pot with good drainage and aeration, generally change the pot once in late spring and early summer, the flowering period is just over, the temperature of the pot is required to be above 20, the most suitable cultivation temperature is 25 28 during the day, 18 20 at night, pay attention to reasonable watering, less fertilization, and light fertilizer.

Symptoms of Phalaenopsis yellow leaves: Yellow irregular lesions on the leaves at the beginning, then the lesions gradually expand and turn brown to black-brown, the surrounding tissues slowly turn yellow, and the yellowing phenomenon spreads to both sides at the same time; In the later stage, the lesions turn black and sunken, and in severe cases, they are cracked and perforated, and finally the leaves wither and fall off.

Pathogen: fusarium sp, which can be dormant in the plant for a period of time.

Prevention and control methods: pathogenic bacteria and their pathogenesis: The pathogenic bacteria of Moneytree Fusarium wilt disease are Fusarium sp), belongs to the subphylum Hemimycetes. Germs invade the ducts from the roots and produce toxins that damage the vascular bundles.

Die. Seedlings, soil, running water, farm tools, etc. can carry bacteria. Seedling planting and discarding of diseased plants are the main reasons for the spread of the disease. Acidic soil is conducive to the growth of the bacterium. Poor drainage and root injury can easily promote the occurrence of this disease.

Prevention and control suggestions: Since the main infection pathogen is Fusarium, which causes rhizome rot, if it is difficult to suppose, the main prevention is the main one!

Precautions: Keep the rhizomes dry; Partial application of high potassium, calcium, magnesium fertilizer can improve the disease resistance of plants!

Pharmaceutical screening: dichloraz, prochloraz, carbendazim, and Fumei double agent control.

1) You can usually choose to use the low-grade drug carbendazim. Fumei double irrigation roots; Regular use of Oxazalin root irrigation;

2) Immediately prune the diseased plants; It is best to choose to repot all the rhizomes in question**, using carbendazim. Formecil or chlorothalonil is directly coated with liquid or powdered;

3) The next day, the rhizome can be irrigated with a mixture of chlormycolin, antibiotic bactericide, and a slightly concentrated multiple can be considered to add a moisturizer, because the rhizome is mainly in the rhizome, in order to save the cost, the rhizome can be directly irrigated;

If it is a phalaenopsis purchased in summer, it is generally because the flowering period is not well controlled (the flower base that sells flowers), so it is advanced**. However, under normal circumstances, this kind of phalaenopsis only blooms quickly, and the leaves are not all yellow. However, two possibilities cannot be ruled out, please check the landlord:

Possibility one, Phalaenopsis varieties to confirm, if it is a popular common variety, the normal green leaves in summer are generally 2 3 [leaves near the flower stem], the other leaves are not really green, the leaves are light green; If it is a rare species, it is discussed separately [especially those produced in Taiwan or Korea].

Possibility two, the owner of the purchase of flowers, at the time of purchase, the root system may be bad, check the method: gently pull out the plant with the aquatic plants, if the root system is non-green or not close to green, [the root flesh is hard and green is best], yellow [medium poor] or black [can be thrown]; Smell the smell again, if there is a foul smell or a foul odor, it proves that the root system is bad, and it can be treated appropriately [to be honest, if it is not a greenhouse or a technician, it is difficult for ordinary people to live], on the contrary, please refer to possibility one.

Flowers and plants, practice morality, type by hand, and learn from each other.

Water too much and water it again when it is dry.

What should I do if the Phalaenopsis is yellow? Don't panic! Teach you how to handle it properly.

The reasons why Phalaenopsis leaves turn yellow are as follows:

1. Improper water control: Phalaenopsis is a tropical plant, which is more suitable for growing in a humid environment, but it also has another weakness - fear of stagnant water. If the soil of Phalaenopsis is waterlogged, it often leads to root rot at the rhizome of the plant, which is often not reflected in a short period of time, and in fact, when the situation is more serious, the leaves will turn yellow.

This often happens after the rainy season, and the potted plants or soil conditions are not observed in time and the bonsai is moved to a suitable place. At this time, it is necessary to clean up the potting soil in time, cut off the diseased leaves, and if the root system is seriously rotten, you can consider re-cultivating the plant.

2. Improper fertilization: In addition to the accumulation of water in the soil, improper fertilization is also another common reason. If you find that the shape of the leaves is thicker than usual, and the stripes of the leaves are more degraded, this is often the case that the leaves turn yellow due to excessive fertilization; At this time, the fertilization should be stopped immediately, and the potted plants should be watered appropriately, and the potted plants should be placed in a suitable outdoor environment to ensure that the nutrients of the plants are consumed faster.

If the situation is too severe, it is necessary to consider the replacement of the potting soil, which does not need to replace all the potting soil and retains the culture soil at the roots of the plant to ensure that the phalaenopsis can quickly adapt to the new soil.

3. Improper light control: Phalaenopsis can not grow in strong light, if you find that the leaves of the plant are softened and yellow, it is likely to be caused by too strong light and the leaves are yellow.

If it is found in time, it is necessary to cut off the yellowed leaves, and then carry out appropriate watering and fertilization, and grow in a semi-shaded environment for 3-5 days. After the plant returns to its normal form, it can be placed in a suitable light environment to grow, especially in June and September every year, in order to avoid strong light, it can be directly shaded directly, and in winter, it can be grown under full light conditions.

4. Diseases caused by pests and diseases.

If you don't have any major problems in your daily management, you should consider the invasion of pests and diseases. Insects such as the common beetle, spider mites and aphids are the common enemies of most flowers, and if they grow in a dark, damp place, the plant is more likely to be infestation. Therefore, in the usual maintenance, it is necessary to control the humidity and light conditions of the plant environment; If the insect infestation is more severe, it can also be removed with a certain insecticide.

1. The top of the new shoots of phalaenopsis is shriveled, the young leaves are pale yellow, and the old leaves are also darkened yellow. The reason is that the soil lacks oxygen due to the prolonged wetting of the water, and some of the roots rot.

Second, the new leaves of Phalaenopsis grow thick and shiny, but the leaf surface is uneven, and the old leaves are yellowing and falling off. This condition is caused by excessive fertilization.

3. The top of the phalaenopsis orchid and the new leaves are normal, but the lower leaves of the plant are first dried and yellow and fall off. The reason is that the phalaenopsis is dehydrated due to the lack of water for a long time.

Precautions for planting phalaenopsis;

1. Temperature: The first thing to do when raising phalaenopsis is to ensure the temperature. Phalaenopsis likes a high temperature and high humidity environment, and the minimum temperature during the growth period should be kept above 15, and the suitable growth temperature for Phalaenopsis is 16 30.

At the turn of autumn, winter and spring, as well as when the temperature is low in winter, attention should be paid to increasing the temperature, and it is not difficult to reach this temperature in the room with heating equipment in winter.

But be careful not to place the flowers directly on the radiator or too close to it. In summer, when the temperature is high, you need to cool down and pay attention to ventilation, if the temperature is higher than 32, the phalaenopsis usually enters a semi-dormant state, and it is necessary to avoid continuous high temperatures. Before and after the Spring Festival is the full flowering period, appropriate cooling can prolong the viewing time, and the night temperature at the time of flowering is best controlled between 13 and 16, but not lower than 13.

2. Watering: Phalaenopsis is native to primeval forests, with more fog and higher temperatures. Phalaenopsis orchids do not have thick false bulbs to store nutrients, and if there is not enough humidity in the air, the leaves are wrinkled and weak.

Therefore, phalaenopsis should be cultivated and maintained in a ventilated and humid environment. Phalaenopsis is suitable for growth, and the air humidity is 60% to 80%.

Phalaenopsis should be watered more during the vigorous elongation period of new roots, and less watering during the dormant period after flowering. In spring and autumn, water once a day around 5 p.m., summer plants grow vigorously, water once a day at 9 a.m. and 5 p.m., the light is weak in winter, the temperature is low, watering once every other week is enough, and it should be carried out before 10 a.m. In case of a cold wave, it is not advisable to water, keep it dry, and resume watering after the cold wave has passed.

3. Light: Although Phalaenopsis is more shade-loving, it is still necessary to make the orchid plant accept some light, especially before and after the flowering period, appropriate light can promote phalaenopsis flowering, so that the flowers are gorgeous and lasting, and should generally be placed in a place with scattered light indoors, not direct sunlight.

4. Ventilation: The normal growth of phalaenopsis needs flowing fresh air, so the ventilation of domestic phalaenopsis must be good, especially in the high humidity period in summer, it must be well ventilated to prevent heatstroke, and at the same time, it can also avoid the infection of pests and diseases.

Usually watering a little roots, pruning bad leaves, Phalaenopsis is very good to raise, like scattered light, put in a bright place indoors, aquatic plants dry and watering can be, add some nutrient solution is better, plant growth is better and more vigorous.