Is there any way you can regenerate a withered value, that is, to turn the yellow leaves into cleari

1. Potassium deficiency, the need for potassium in plants is the same as the need for sodium in higher animals, and potassium is a component necessary for plant growth. The plant body selectively absorbs potassium from the soil through the root system. Potassium is associated with photosynthesis and respiration in plants, and a lack of potassium can cause symptoms such as shrinkage, yellowing, or tan spots on the leaves.

2. Nitrogen deficiency is one of the important components of the smallest unit of the plant body, the cell. Proteins are the main building blocks of cells, and nitrogen in proteins is about 6 18.

Nitrogen is also an important component of chlorophyll, which plants need for photosynthesis. In addition, vitamins, hormones, alkaloids and other organic matter contained in plants also contain nitrogen. Nitrogen generally accumulates in young parts and seeds.

When the nitrogen ** is sufficient, the stems and leaves of the plant are luxuriant, dark green, and defoliation is delayed; On the contrary, if the nitrogen is insufficient, the plant will be short, and the lower leaves will first lack green and turn yellow, and gradually expand upward, and the leaves will be yellow. Of course, if there is a lack of nitrogen, too much fertilizer, especially when phosphorus and potassium are insufficient, it will cause growth, greed, late maturity, easy lodging, infection with pests and diseases, especially too much at one time will cause seedlings to burn, so we must pay attention to reasonable fertilization.

You can go to the flower market or buy the corresponding fertilizer online.

What kind of plant do you raise? Go to the Internet to find out what environment this plant likes to see if you usually have too much water, or you can't get fat, or you have bugs.

I'm not a god, let's give up as ordinary people.

When the leaves turn yellow slowly, it doesn't necessarily mean that you are sick. It can also be due to poor plant growth and development due to unsuitable environmental conditions. Therefore, it is necessary to find out the cause in time and take effective measures to:

1: Although you water on time, will you water too much, causing lack of oxygen or even rotting of the root system. Also pay attention to soil aeration, regularly loosen the soil (be careful not to damage the root system).

2: Have you paid attention to ventilation. Ornamental flowers grown at home often suffer from poor growth due to poor ventilation in the home. Carbon dioxide is often lower indoors than the outside, which inhibits plant photosynthesis.

3: Soil nutrients. The nutrients in the soil are consumed as the plants grow, so it is necessary to replenish the lost nutrients in time.

4: Light. If you place it outdoors and indoors, it is possible that the plants do not get enough light and cause the above phenomenon.

The yellow leaf color of indoor-raised plants is mainly caused by insufficient light, excessive watering, hard potting soil, poor air circulation, and insufficient nutrients in the pot.

1: Potted plants can be placed indoors in a sunny position, which is conducive to photosynthesis and reduces 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 ventilation place, reduce the occurrence of pests and diseases, good ventilation is not easy to cause pests and diseases, no pests and diseases leaves 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 the symptoms of rotten roots.

Four: about 2-3 months to loosen 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 easy to appear yellow leaves.

Five: at least twice a year to apply fertilizer, 4-5 months, 8-9 months each apply a compound fertilizer, according to the amount of instructions, in order to prevent fertilizer damage caused by excessive fertilizer, fertilizer can be equipped with some mineral additives and other fertilizers to prevent nutrient deficiency.

Six: change the pot once a year, you can change the pot after winter or next spring, the main thing is to increase the nutrients in the pot, and you can bury some long-lasting base fertilizer at the bottom when changing the pot.

The leaves of the plant slowly turn yellow because of a disease.

Different plants require different water and sunlight and cannot be treated equally, for example, the succulent root of the orchid should be planted in a large pot, and it can be watered every two weeks. Too much water is easy to rot roots.

The dripping Guanyin leaves are larger, so you can water more.

Temperature, soil moisture, nutrients, and sunlight all influence.

A low or high pH and iron deficiency can cause yellowing of plants or leaves.

3.What should be done about the leafy growth of the plant and the lack of flowering?

If the nitrogen content in the medium is too high, or the light intensity is too low, this may occur and adjust appropriately.

Iron deficiency and excessive watering.

Chronic lack of water. Lack of sun exposure.

Plants are fertilized too much.

Plants are chronically deficient in fertilizer.

Excessive watering and long-term wetness of the potting soil cause a lack of oxygen in the soil, resulting in the rot of some fibrous roots, thus weakening the ability to absorb water and fertilizer, causing the young leaves to turn pale yellow, and the flowers and leaves to gradually turn dark yellow.

Watering should be controlled immediately, fertilization should be stopped, and the soil should be loosened frequently to make the potting soil well ventilated. If the disease is severe, the whole land needs to be removed from the pot and placed in a dry mound to make the water seep out quickly, and then replanted in the pot after the drooping branches and leaves have recovered.

Watering too little, or long-term watering of half of the water or leakage, so that the evaporation of water in the leaves is greater than the absorption, resulting in a shortage of water, and will also cause the leaves to turn yellow.

Dry yellow is from the lower leaves gradually upward yellow, scorched and shed, in severe cases, the petiole droops and wilts. Immediately after finding it, move the pot to a cool place, spray some water on the leaves, and water a small amount of water. Later, as the stems and leaves gradually return to straightness, and then gradually increase the amount of watering, if too much water is suddenly poured at this time, it may cause the separation of the cytoplasmic wall, the protoplasm is damaged, and the flower dies.

Workaround:

The appearance of yellow leaves, depending on the characteristics of its occurrence, has the following situations:

One is water yellow. Caused by over-frequent watering, it is characterized by no obvious change in old leaves and yellowing of young leaves; This should be done with immediate water control;

The second is dry yellow. Caused by lack of water and drought, it is characterized by the first yellow leaves from the bottom up, if the lack of water for a long time, the whole plant will be yellow, and even die, should be watered in time;

The third is fat yellow. Caused by excessive fertilization or high concentration; It is characterized by thick, shiny, and uneven young leaves; Fertilizer, cultivation and watering should be controlled;

Fourth, hungry yellow. It is caused by insufficient fertilizer, low fertilizer concentration, and long fertilization interval; It is characterized by the first yellow of young leaves and young stems, and if you do not fertilize in time after seeing this phenomenon, it will also cause the whole plant yellow leaves or even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning.

There are several reasons why the leaves turn yellow: one is because some of them are annual herbaceous plants, which is a normal physiological aging phenomenon; The second reason is the natural decrease in chlorophyll in plants due to climate change; The third reason is the lack of light; The fourth reason is nutritional disorders, but some plants have to stop fertilizing in winter; The fifth reason is that if you have yellow leaf disease, you can use ferrous sulfate to water the leaves, which is specifically for yellow leaf disease.

The appearance of yellow leaves, depending on the characteristics of its occurrence, has the following situations:

One is water yellow. Caused by over-frequent watering, it is characterized by no obvious change in old leaves and yellowing of young leaves; This should be done with immediate water control;

The second is dry yellow. Caused by lack of water and drought, it is characterized by the first yellow leaves from the bottom up, if the lack of water for a long time, the whole plant will be yellow, and even die, should be watered in time;

The third is fat yellow. Caused by excessive fertilization or high concentration; It is characterized by thick, shiny, and uneven young leaves; Fertilizer, cultivation and watering should be controlled;

Fourth, hungry yellow. It is caused by insufficient fertilizer, low fertilizer concentration, and long fertilization interval; It is characterized by the first yellow of young leaves and young stems, and if you do not fertilize in time after seeing this phenomenon, it will also cause the whole plant yellow leaves or even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning.

Fifth, iron deficiency yellow leaves. Due to the great change of soil fertility conditions, the phenomenon of yellow leaves often occurs in greenhouses, which is characterized by obvious young leaves, light old leaves, yellow mesophyll, green leaf veins, and the formation of a typical network. It can be solved by applying ferrous sulfate aqueous solution, and the method is: 7 parts of cake fertilizer, 5 parts of ferrous sulfate, and 200 parts of water are prepared into multiple liquid water.

Lack of nitrogen, phosphorus, potassium and other important elements that plants must produce chlorophyll, as well as too little watering, too much sunlight, and due to seasonal reasons, plants also secrete lutein from physiological factors, causing plant leaves to turn yellow.

Watering more, watering less, drought, fertilizing too much, too little.

Gardenia yellow leaves, mainly caused by winter fertilizer, too much water. It is necessary to control watering and stop fertilizing. When yellow leaves appear, the yellowed branches can be cut off directly, which can ensure the normal growth of the main trunk, and when the temperature warms up in the spring of the following year, new leaves will soon grow.

Generally, gardenias should not be watered too much in the planting process, and the water in the pot or the potting soil is too wet, which will cause the young leaves to be dull and dull, grow slowly, and the old leaves are yellow-green and gradually wither. If the fertilization concentration is large, it will cause the yellowing of the leaves of the plant, and the main characteristics are that the leaf tips of the new leaves will be yellow-brown, the leaf surface will be uneven and lusterless, and the old leaves will gradually wither and fall off; This can be discerned. When the fertilizer damage is serious, the leaves will turn yellow, and they need to be watered and rinsed immediately, or repotted and replaced.

1. Soil. It is necessary to choose loam soil with good permeability, good water and fertilizer retention. 2. Temperature.

Gardenia in 20-25 is its optimal growth and development temperature, flowering temperature is 26-28, after 4-5 years of cultivation of plants, can tolerate a short period of -3 low temperature, -5 below that suffer frost damage, leaves black after falling off, young shoots freeze to death. In winter, indoor maintenance should be maintained at 6-10 degrees, and the minimum should not be less than 0. If the room temperature is higher than 15, the south-facing doors and windows should be opened, properly ventilated, and the temperature should be reduced, otherwise it is easy to cause germination, and it will be harmed by low temperature, which is extremely unfavorable to the growth and flowering of the next year.

3. Illumination. Gardenias like abundant light, especially in spring and autumn, to give more than 8 hours of sunshine a day, otherwise it is not conducive to its growth and development and winter overwintering. In summer, avoid strong light exposure at noon, otherwise the leaves will turn yellow, and it is advisable to place astigmatism for maintenance, and the light transmittance should reach 40-50%.

In winter, it is placed indoors in direct sunlight facing south.

4. Fertilization. Gardenia is not a very fattening flower, but because it grows vigorously and is limited by the nutrients of potting soil, it needs to be reasonably supplemented with fertilizer during the growth period. Apply rotten human manure or cake fertilizer every 10 days or so, stop watering 1 day before fertilization, and water once at the same time on the day of fertilization.

Fertilization will be stopped from mid-September. For adult plants, apply sesame paste residue once in mid-June and mid-August, two at a time, and mix well with the topsoil after crushing.

5. Watering. Gardenias like big water, and some people call it "water gardenia". In spring, due to the windy winds, dry air and scarce rainfall, water is watered every 3 days, and water is sprinkled every morning and evening around the potted plants to increase air humidity.

In summer, when the weather is hot, it is necessary to water less in the morning and water thoroughly after 2 o'clock in the afternoon. In summer, it is advisable to water with soft water, because the hard water contains more calcium and magnesium salts, which is very unfavorable to the growth of gardenias. In order to overcome the alkalinity of the soil and water quality, alum fertilizer is watered once a week during the growing season to keep the gardenia branches and leaves thick.

Watering should be controlled in winter, not dry or watering, long-term excessive water content, easy to cause root rot and death.

6. Topping. In order to regulate and control the growth of gardenias, make the plant beautiful and promote flowering, the tips of new branches are removed in the spring when vigorous growth is about to stop, and the axillary buds at the base of the branches are full and the flower buds are full.

Verticillium dahliae kleb , ren et ber is a common disease that mainly affects roses and roses.

SymptomsThe symptoms of infected plants are manifested in the stems, and there is a greening phenomenon between the veins of the top leaves, and then gradually browning and wilting. Yellowing of the lower leaves. Sometimes brown to black spots appear on the xylem at the base of the diseased stem. In severe cases, it can cause the death of the whole plant.

Prevention and control methods. 1) Strengthen cultivation management, reasonable fertilization and irrigation, and improve plant resistance. Reasonable dense planting, adjust ventilation and light transmission, timely drainage after rain, maintain appropriate temperature and humidity, clean up disease residues, and reduce the source of disease.

2) Choose disease-resistant rootstocks for planting.

3) Do not plant with tomatoes, potatoes, chrysanthemums, sunflowers and other crops. Avoid the spread of germs.

4) In the event of a serious occurrence, you can water 50% mixed sulfur suspension or 50% carbendazim wettable powder 500 times and 50% benamyl wettable powder 1000 times. [1]

Petunia seedlings begin to turn yellow from the bottom leaves, become soft and shrivel, causing this kind of proto-dao

Because of the more inside. One: the phenomenon of yellow leaves of petunia seedlings softening caused by watering too much humidity, usually watering is not easy to be too wet, and the soil that is too wet is easy to accumulate water to produce root rot and yellow leaves become soft. It is best to keep the soil dry and watered, so that it is not dry and watered, so that it is conducive to the growth of the root system, so that it is not easy to appear yellow leaves and soften.

2: The soil board is hard and impermeable, and the water after watering cannot penetrate into the soil layer, resulting in most of the roots being unable to absorb water and nutrients, resulting in leaf water loss and nutrient loss, and symptoms such as yellow leaves and softness. The best way is to loosen the soil properly, so that the soil is loose, breathable, drainage, and conducive to root growth.

Three: there are pests and diseases are also easy to cause yellow leaves, softening and other phenomena, it can be observed that if the leaves are caused by insect pests, insecticides can be used to kill insects, if it is caused by fine yin, antibiotics can be used to treat diseases.

Four: insufficient nutrients are also easy to cause yellow leaves to soften symptoms, dig holes on the side and bury compound fertilizer and mineral additives according to the amount, the amount is not easy to be too much to prevent fertilizer damage.

Five: When the seedlings grow slowly, it is normal for the old leaves at the bottom to slowly wither and die, as long as the amount is not much, it will not have much impact.