What to do if the leaves of gardenia are yellow and wilted, do you know what the reason is?

Remove these yellowing leaves, put them in a cool and ventilated place, water them more, and loosen the soil frequently. It may be because of the long period of sun exposure, the temperature at home is relatively high, and the air is relatively dry.

At this time, it is necessary to water in time, fertilize in time, and carry out light appropriately, which may be caused by improper management of water and fertilizer.

Gardenia has a beautiful plant shape, spacious leaves, dense and shiny leaf color, beautiful flower patterns, and a refreshing fragrance, which can make people instantly refreshed. Because in the process of raising gardenias, it is easy to cause the leaves to turn yellow, what is the reason? Here's an introduction:

Gardenias are more drought-tolerant, and if they are watered frequently, it is easy for the rhizomes to cause decay, and the leaves naturally turn yellow. Therefore, when watering it, you can wait until the soil layer is slightly whitish before watering it thoroughly, so that it can reasonably prevent the rhizome from rotting.

Gardenia is suitable for growing in a well-ventilated environment, if the ventilation is not good, it is easy to make the leaves yellow, and it is also easy to breed diseases. Therefore, when raising gardenias, it must be kept in a well-ventilated environment, so that it can grow and develop normally.

Gardenia itself is more sun-loving, but the light in summer is more obvious, if it is irradiated by sunlight for a long time, it is easy to make the leaves burn, and then the leaves turn yellow, fall and other phenomena. Therefore, when raising gardenias in summer, you must moderate shade the light, so that they can grow and develop physically and mentally.

Gardenias must be supplemented with nutrients during the peak growth period, so that they can grow and develop strongly. However, if too much fertilizer is applied, it is easy to cause the rhizome to be burned, and the leaves will naturally turn yellow. Then it must be watered, poured in the water and separated, to dilute the nutrients in the soil layer, and then fertilization must be in accordance with the standard of "thin fertilizer and frequent application".

1. If the natural environment is too different, it will cause yellow leaves, which cannot be controlled. Therefore, the yellowing of the leaves should be observed for a period of time, and the maintenance should be done well during this time.

2. If there is less water in the reasonable watering, it should be hydrated and moisturized in time, and if there is too much watering, the frequency and total amount of watering should be reduced.

3. Acidic water is suitable for gardenia likes acidic soil, and the added drinking water is alkaline or neutral, so acidic substances are often added in watering, such as edible vinegar, sodium citrate, etc.

4. Gardenias maintained in the indoor ventilation room must be ventilated frequently to ensure that the light source in the natural environment is bright, and the green plants must be placed in front of the window for maintenance.

5. Reasonable fertilization introduces the various main manifestations of gardenia fertilizer deficiency, and appropriately fills chemical fertilizers according to plant growth to ensure the balance of each nutrient. If too much fertilizer is applied, it should be washed immediately with water, or repotted and replaced.

6. Prune the stems of the yellow-leaved gardenia, and when the yellow leaves occur, immediately cut off the yellowed branches, which can ensure the normal growth and development of the main stem, and carefully maintain, it will not take long for the new shoots to grow out.

The leaves of gardenias are yellowish and dry, probably due to a lack of fertilizer. You can add a certain amount of fertilizer to the nephew flower to make it thrive again.

You can water more and eat more fertilizer. And it should be placed in a suitable lighting environment. In this way, it can be remedied, and normal growth can be achieved.

Move it to a well-ventilated area and don't water it anymore and wait until new leaves grow before watering it without applying too much fertilizer.

Reason 1: Soil pH imbalance.

Gardenias prefer slightly acidic soils, and if the soil is too acidic or alkalized, it will cause the roots of the plant to be unable to breathe normally and not absorb nutrients adequately, thus hindering growth and causing wilting.

If the soil is too acidic, it is necessary to stop using ferrous sulfate solution, water it several times, and after each permeability, it should be placed in a ventilated place for nutrients, remember that there can be no water in the potting soil, and after repeating many times, the acidity can be reduced and returned to normal.

If the soil is alkalized and agglomerate, it is necessary to loosen the soil in time, water the plants with ferrous sulfate solution, adjust the acidity and alkalinity of the soil, and replace the soil with a new one if the agglomeration is serious.

In the process of maintenance, the plants can also be properly watered with beer water and rice washing water, which can keep the soil acid-base balance and avoid soil alkalinization or excessive acidity.

Reason 2: Overwatering or insufficient moisture.

Gardenia likes moist climate environment, too much water or insufficient water will affect the growth, to water reasonably to keep the soil moist.

If you water too much, it will cause the root system of the gardenia to rot, and the old leaves will turn yellow or fall off.

If the water is insufficient, the leaves will lose water and wilt, at this time it is necessary to replenish the water to the plant in time, the evaporation in summer is larger, and it is necessary to increase the amount of watering to keep the soil moist. In summer and autumn, the air is dry, and the leaves can be properly sprinkled with water 1 or 2 times to keep them moist.

Reason 3: Insufficient nutrient supply.

During the growth of gardenias, the demand for nutrients is relatively high, and if the nutrients are insufficient, the leaves will wither and dry out, and the plant will wilt.

If the nutrients given to the gardenia are less, it is necessary to apply fertilizer in time, the fertilizer is mainly compound fertilizer, generally every 15 20 days to fertilize 1 time thin fertilizer, the concentration can not be too high, in winter, you need to stop fertilization.

Reason 4: Too much light or not enough light.

Gardenias love light, but are not tolerant to strong light, and are suitable for growing in mild light environments.

During maintenance, the leaves of gardenias will turn yellow and dry after being exposed to strong light.

If the gardenia is exposed to strong light, it should be moved to a cool and ventilated environment indoors for maintenance, and the water needs to be controlled during the maintenance period, which is conducive to the recovery of the gardenia.

If there is not enough light, the leaves cannot photosynthesize normally, which will also cause the leaves to turn yellow and wilt.

At this time, the gardenia should be moved to a well-lit place for maintenance, and sufficient light should be given to ensure that the plant can photosynthesize, which is conducive to the formation of chlorophyll and can prolong the flowering period, but in summer, shade is needed.

Reason 5: Suffering from pests and diseases.

During the growth period, if the environment is not proper or the maintenance is improper, its growth will deteriorate and it will be easily attacked by pests and diseases.

Common diseases are yellowing or leaf spot, and insect pests include aphids, and the old leaves of gardenias will turn yellow after being attacked by pests and insects. If the gardenia is infested by pests and diseases, you need to cut off the branches and leaves of the pests and spray them.

Iron deficiency yellow leaf disease! It's obviously too alkaline! Gardenias originally prefer acidic soil, but they become alkaline when watered with tap water.

Clause.

1. Sour soil culture, gardenia needs to scatter light, so it likes sour soil, if the soil is alkaline, it will make gardenia unable to absorb iron well, which has a great impact on the formation of chlorophyll, and further causes flower branches to wither and even die; Therefore, the soil must be loose, fertile and acidic, and some substances with such an effect can also be added to it.

Clause. Second, placed in a cool place, gardenia must not be exposed to the scorching sun, otherwise it will cause the leaves to wither yellow, but it is not said to be placed in the full shade, because it has a certain demand for light, it is best to be placed in a place to maintain 60% of the daily light, in addition, after entering April, fertilization should be carried out twice a month.

Clause. 3. Air humidity, gardenias like moisture, so the air can not be too dry, according to expert statistics, if the air humidity is lower than 70%, it will affect the normal opening of flowers, but if it is too wet, it will cause rhizome rot and yellowing leaves, so in addition to normal watering, it is necessary to spray water frequently nearby, another problem to pay great attention to, water can not be watered too much, otherwise it will affect the growth, so how should gardenia be watered?

A. When you see the soil is dry, knock the flower pot with your hand, if there is an empty sound, you need to water, the bottom of the flower pot begins to leak and stop, and the watering is best to add some eggs, soy milk, etc., which is more conducive to growth.

Clause. Fourth, the key to fertilization, gardenia likes fertilizer, but can not add too much fertilizer at one time, must be thin fertilizer more, must not be greedy, otherwise it will cause thick branches, large leaves, thick green, it will lose its own appreciation effect.

Clause. Fifth, temperature requirements, the growth temperature of gardenia can not be too low, because it likes temperature, generally speaking, the temperature during the growth period is 18 to 22 degrees is better, 5 to 10 degrees in winter, if it is lower than minus 10 degrees will be frostbitten, which should be paid special attention to in the north.

Clause. Sixth, proper pruning, gardenia is very easy to grow branches luxuriant, and cause impermeable and disorganized feeling, which will cause nutrient dispersion and ornamental deterioration, so it needs to be pruned, pruning is best to choose 3 main branches, and at any time to cut off the root tiller germination of new branches, after the flower branch should be cut in time, in this way, under the cut will germinate new branches. When the new shoots have grown three knots, they should be topped to avoid blind growth.

There are two possibilities, 1: sick 2: normal.

1.There may be a lack of nutrients, irregular fertilization, 2Check the branches for insects. Fertilization and insecticide are sufficient.

Gardenia leaves are yellow, remember these tricks, the leaves are green all year round.

During the growth of gardenias, the leaves often turn yellow, and the reason is mostly caused by poor cultivation management. Too much water, too little sunlight, too much or too little fertilizer will cause yellowing of leaves, but the yellowing situation is different, and the causes should be carefully observed and analyzed, and corrected.

Water yellow: the young leaves are dark yellow and dull, the old leaves have no obvious changes, the branches are small yellow-green, and the new shoots are shrunk and not long, indicating excessive watering. Depot the flowers, put them in a ventilated and cool shade, and dry the soil ball before putting them back into the pot.

Dry yellow: the yellow of lack of water is different from the yellow of more water, the yellow of lack of water is the withered and dry leaf tips or edges, and the old leaves are withered and yellow from the bottom to the top, but the growth of new leaves is relatively normal. Pay attention to watering when watering enough, water thoroughly.

Burning yellow: strong sunlight directly shines on some shade-loving flowers (such as spider plant, hosta, etc.), which is easy to cause the leaf tips and leaf edges of flowers to wither, and the sunny part of the leaves to appear yellow spots. Move to the pubic area.

Lack of light yellow: If the leaves are shaded for a long time, the leaves cannot get enough sunlight to form chlorophyll, and the whole leaves turn yellow and then fall off, and the disease can be avoided by supplementing light.

Fat yellow: the yellowing of flowers caused by excessive fertilization or excessive concentration is manifested in the dry brown appearance at the top of the new leaves, the general leaf surface is thick and dull, and the concave and convex are not stretched, and the old leaves are scorched and yellow. Fertilization should be stopped immediately, and part of the fertilizer should be washed with plenty of washing in severe cases.

Lack of fat yellow: It is manifested in the color of young leaves becoming lighter, yellow or light green, while old leaves are more normal or gradually turning from green to yellow. Check the potting soil, if there is a dry knot, the soil should be changed, and the thin fertilizer should be applied frequently and some alum water should be poured in a timely manner.

1. Improper watering. Watering too much or too little gardenia plants will cause the leaves to turn yellow, and even die and fall off. When watering too much, you can prune off the yellow leaves, and then put the plants in a well-ventilated place to promote the evaporation of water as soon as possible, so that the plants can slowly slow down the seedlings.

If the situation is too severe, it is necessary to repot the plant, prune the rotten roots, and then transplant it into the new potting soil, and wait for the plant to be potted and maintained normally. The leaf yellow caused by too little watering can be properly replenished. When the potting soil of gardenias is dry, it needs to be watered in time, so that it can be watered thoroughly, and at the same time avoid excessive water accumulation.

2. Improper fertilization. Excessive or sparse fertilization can lead to poor plant growth and yellow leaves. It can be properly topdressed during the growing period, fertilizing once every 20-30 days, and it is best to choose thin light fertilizer water.

After the symptoms of yellow leaves appear, you can spray ferrous sulfate aqueous solution on the foliar surface, or spray fertilizer diluted with boron and magnesium fertilizer to prevent and improve yellow leaf disease.

3. Improper lighting. Gardenias need a certain amount of light to grow, but if they are exposed to strong sunlight, the leaves will turn yellow, so they should be moved to a cool and ventilated place in time to breed. Lack of light can also cause gardenia leaves to turn yellow, so it is best to keep them in an environment with scattered light.

4. Improper temperature. Frostbite on gardenia plants can also cause leaves to lose green and turn yellow. The suitable growth temperature for gardenias is 16-18, and the temperature is lower than 5 and may be frostbitten. Gardenias need to be kept indoors during overwintering to ensure their normal growth.

Gardenia mosaic leaf blight.

The pathogen is a fungus of the genus Polychaete subphylum, which overwinters in the diseased residues of the host plant. The disease is more severe in the high temperature and humidity season, and can infect the branches.

1.Harmful symptoms.

The disease mostly occurs on the leaves, mostly from the tip of the leaf, the leaf edge of the disease, the lesion is a small brown spot at the beginning, after the expansion is irregular, black-brown. Yellow-brown or grayish-brown lesions.

In the later stage, the diseased leaves dry up and appear black granulars, i.e., conidia.

2.Control technology.

Strengthen management and control humidity.

Do not overuse nitrogen, apply more phosphorus and potassium fertilizers appropriately, and remove diseased leaves in time.

At the initial stage of the disease, 80% zebsen wettable powder 800 1000 times, or 70% methyl tobuzin wettable powder 1000 1500 times, sprayed with 1:1:200 equivalent Bordeaux solution for prevention and control; Spray 1 time every 7 10 days, 2 3 times in a row.