What happens when gardenia leaves lose green and turn yellow green?

Gardenia is a regular visitor to our home. When the gardenia is not in bloom, the leaves are evergreen, and when it is in bloom, the white flowers are dotted in between, and the fragrance is strong. Many people like to keep a pot of gardenias at home, but some friends raise gardenias with yellow leaves.

What is the reason? In fact, most of them are caused by a lack of maintenance knowledge and improper maintenance technology.

It is known that the plants of Yuyao have a certain amount of light for photosynthesis, and the same is true for gardenias, but sometimes the leaves of gardenias can also turn yellow. First, gardenias may develop macules when exposed to too much sunlight. At this time, we should do some shade work or move to a cool and ventilated place to recover slowly.

However, if gardenias are left in a dark place for a long time without sunlight, the leaves will turn yellow and even wither and fall off. Therefore, in this case, we should allow the gardenia to receive the proper light for the gardenia to recover.

Improper watering can also cause gardenia leaves to turn yellow. If there is too much moisture, the leaves of the gardenia will become dull and the leaves will turn yellow and green. At this time, it is necessary to take the gardenia and soil out of the pot in time and put it in a ventilated place to quickly evaporate the water.

Or loosen the soil and put it in a ventilated place to let the excess water evaporate as soon as possible. But with less watering, the leaves will turn yellow due to dryness, the new leaves will not be damaged, and the old leaves will turn yellow and slowly fall off. In this case, add water to the gardenia as soon as possible.

Soak thoroughly when pouring.

If the temperature is too low in winter, the leaves of the gardenia will turn yellow if they are not kept warm. At this time, it is necessary to pay attention to helping gardenias to take measures against the cold. In addition, if the room is closed for a long time without ventilation, the gardenia will turn yellow because it cannot breathe fresh air.

In this case, we need to ventilate more and replace it with fresh, moist air.

Some people expect their gardenias to grow fast, so they use some fertilizer to maintain them, but sometimes they don't have a good grasp of the amount of fertilizer to use. There is also the dilution ratio. It can cause fertilizer damage to gardenias.

Not only are the new leaves unusually colored, but they are also jagged and unable to stretch. The old leaves turn brown and fall off. In this case, we have two methods:

Replace soils with high fertilizer concentrations by directly replacing them with new potting soils.

When it comes to fragrant flowers that bloom in summer, jasmine is the first thing many people think of. Jasmine is known as "the first fragrance in the world", and it is indeed worthy of its name. But there are also quite a few aromatic flowers that bloom in the middle of summer, although gardenias are one of them.

Although gardenia does not have the reputation of "the first fragrance in the world", the fragrance of flowers is also that kind of fresh and distant, and the flower color is white and huge, so it is also one of the first choices for many flower friends to raise flowers. In particular, the student party gave each other a pot of white gardenia potted plants, which also expressed the pure feelings of the student days. In addition to viewing flowers and leaves, gardenia fruits, also known as yellow gardenias, are also the best soaking water drinks to quench thirst and heat in summer.

In addition, when the gardenia is maintained indoors, its leaves can effectively absorb soot and toxic sulfur dioxide gas in the air, so it is also a good flower to purify the air.

Gardenia maintenance is relatively simple, and there are relatively few diseases, but many flower friends will find that the gardenia that is still big and fragrant when bought in the first year will bloom smoothly in the second year. Not only do the leaves turn yellow and fall off easily, but in severe cases, it can also lead to plant death. Of course, there are unscrupulous businesses spraying brighteners to cause yellow leaves and death, but more often because of the lack of attention to some problems in the daily maintenance process.

So how do you avoid gardenia yellow leaves?

Gardenias, as evergreen shrub flowers, prefer slightly acidic soils. Therefore, commercial gardenias with pots are often planted in acidic soils rich in organic matter, such as mountain mud and peaty soil. This type of planting soil is also relatively fertile, which can meet the needs of gardenias for one to two years of growth.

However, after one to two years, the depletion of nutrients in the soil, coupled with the possibility of long-term application of chemical fertilizers and irrational watering methods, may deteriorate the soil structure, and there will be a return to salinity and alkali.

SoilSoil salinization is harmful to many flowers, especially those that prefer slightly acidic soils. Due to the increasing salinity content, not only can the gardenia roots not absorb water from the soil, but the soil will in turn absorb water from the gardenia plants to balance the osmotic pressure in the soil. As a result, gardenias gradually appear yellow leaves and dead branches, and even root rot and death.

Preventing soil salinization can be done through fertilization management and watering, but the most straightforward way is to change the soil regularly. When changing the soil, it can also be combined with changing the pot, and the 1-2-year-old gardenia may be too small because the root system continues to develop. It is best to choose the early spring when changing potting and soil, because the gardenia has just recovered from the dormant state of winter, and the normal physiological process of the plant is less affected by the soil change, and the gardenia can quickly pass the slow seedling period and turn into a normal growth state.

When changing the soil, you can replace the original deteriorated soil at the same time (note that you need to retain a part of the "heart protection soil"), and by the way, add some organic fertilizer as the base fertilizer, which can well reduce the amount of fertilization work in the future. For example, the common livestock manure in the countryside is the best organic fertilizer, and the well-decomposed and fermented soybean milk residue and hemp residue cake can also be used in the city. This kind of fertilizer itself is rich in a large amount of humic acid, which can greatly delay the rate of soil deterioration in addition to providing nutrients directly to gardenias and an ideal pH environment.

As the saying goes, "everything grows by the sun", gardenia is not excluded, it likes a sunny growth environment, sufficient sunlight is conducive to the differentiation of flower buds and leaf buds, if the light is insufficient, leaf photosynthesis can not be fully carried out, chlorophyll content becomes low, the leaf color will become lighter, and the leaves become yellow-green.

1) Excessive watering, potting soil is too wet for a long time, resulting in a lack of oxygen in the soil, causing some fibrous roots to rot, hindering normal respiration and absorption of water nutrients, causing leaves to turn yellow and fall off. After the damage, the young leaves first turn pale yellow, and then the old leaves gradually turn yellow, watering should be controlled immediately, fertilization should be suspended, and the soil should be loosened frequently, so that the soil is well aerated.

2) Drought dehydration. Leakage of watering or long-term watering (i.e., wet at the top and dry at the bottom) will affect nutrient absorption, and it is also easy to cause dull and dull leaf color, wilting and drooping leaves. First, the lower old leaves are aging, and gradually withering and falling off from the bottom to the top.

What is the reason for the yellowing of gardenia leaves, experts tell you these points to keep gardenias evergreen.

The solution to the fact that the leaves of gardenias are not green.

1. Lack of light.

Although gardenia is a shade-loving plant, it cannot be lost to a little light, and if it is not exposed to light for a long time, it will cause the leaves to become yellow and dry, and it is not as vibrant as green.

Treatment method: Gardenia should be placed in ventilation and semi-shade in summer, and it is best to accept astigmatism, and it is best to put it in a place where the sun and the temperature is not lower than 0 in winter.

2. Improper moisture.

If the gardenia is overwatered during the planting process, the young leaves will be dull and dull, and the old leaves will not be affected, but the leaves will be yellow-green, and even new leaves will not grow.

Treatment: Put the gardenia off the pot in a ventilated and cool place and put it back into the pot after the soil is dry. When there is a lack of water, the leaf tips or edges are withered and dry, the old leaves are yellow and fall off from the bottom to the top, and the growth of new leaves is relatively normal.

3. Improper fertilization.

Gardenia in the growth period if improper fertilization will also appear a variety of problems, too much or too much concentration is easy to cause plant yellowing, the tip of the new leaf will appear brown, generally the leaf surface is hypertrophic and dull.

Treatment method: If the leaves are not green, it is generally a lack of nitrogen fertilizer, nitrogen fertilizer promotes leaf green, phosphate fertilizer promotes root growth, when the plant is deficient in potassium, the old leaves turn from green to brown, and at this time it is necessary to apply appropriate Bika potassium fertilizer is the most effective.

4. Air drying.

As a southern flower, gardenia likes a warm and humid climate, and if the air humidity is too low during the budding, the leaves will not be shiny and not green.

Treatment: What to do if the leaves of gardenia are not green, the gardenia needs to grow in a higher humidity environment during the maintenance process, and the leaves can can be adjusted into a mist and sprayed frequently. p Subheading E

5. Spider disease.

There is also a possibility that the green leaves of gardenia are caused by red spider disease, and if there are small insects on the back of the leaves of gardenias, red spiders will grow if they are not well ventilated.

Solution: It's very simple, move to the toilet, block some potting soil with a plastic bag, and take a shower, once or twice.

The new leaves grow slowly, yellow, and feel qualitative, maybe the virus is sick, or there is a lack of nutrients, try this.

The newly grown leaves of gardenias are not very green, mainly due to the lack of corresponding fertilizer, once the west lacks fertilizer, then the leaves will not be very green.

The leaves are tender yellow as soon as they come out.

The reasons for the drying up of gardenia leaves are explained in detail as follows:

1. Dryness: As an evergreen plant, gardenias will not have many dead leaves under normal circumstances, if the leaves are all dry and falling, and the branches become brittle, it means that there is no cure.

2. Watering too much:

If you find that the gardenia pot soil is too humid, there is no dry soil, and a few leaves are dry, it means that the leaves are dry due to overwatering. At this time, it is necessary to reduce the amount of watering, move the gardenia potted plant to a sunny place, and then cut off its dead leaves with scissors, and after a while it will grow new leaves. Therefore, the amount of watering for gardenias must be controlled, and the potting soil can only be watered when it is dry.

3. Soil discomfort:

The dry leaves of gardenias are mainly caused by an excessively high pH in the soil, and it is recommended to cultivate them with humus-rich loam soil. Adding an appropriate amount of vinegar can make it slightly acidic after watering the flowers, and the specific pH value can be measured with pH test paper. You can also buy a little ferrous sulfate, soak it in water, and water it every 10 days.

4. Ventilation problems:

The growth of gardenias requires good ventilation, otherwise it will also cause the phenomenon of yellow leaves and falling leaves.

5. Lack of water and light:

Generally, it is caused by lack of water and light, because gardenias are yellow mud mounds in the place of origin, and when they go to the flower market to sell goods, they will change pots and fill in new soil, so that it is easy to see the dry and wet situation of Huang Nituo, because the new soil is generally very loose and easy to absorb water, but as long as Huang Nituo is dry, it is not easy to water through. This can easily lead to dehydration, and the leaves are prone to drying out. So I suggest that you soak the pot in a bucket for a day and a night, so that you can soak the yellow mud through and water it more frequently in the future.

6. Lack of fertilizer:

Nitrogen deficiency will cause yellow leaves, and new leaves will be small and brittle; The old leaves of potassium deficiency turned from green to brown; The old phosphorus-deficient leaves are purplish-red or dark red. For the above cases, well-rotted human feces or cake fertilizer can be applied thinly.

Yellowing caused by iron deficiency: This yellowing disease, manifested on new leaves, is pale yellow or white at the beginning, the leaf veins are still green, and in severe cases, the leaf veins are also yellow or white, and the final leaves will dry up and die. In this case, it can be sprayed.

of ferrous sulfate aqueous solution for prevention and control.

Yellowing caused by magnesium deficiency: This yellowing disease begins to develop from old leaves to new leaves, and the leaf veins are still green, and the leaves fall off and die in severe cases. In this case, a boron magnesium fertilizer can be sprayed to prevent and control it.

7. Summer exposure:

Exposure to the sun can also cause gardenia leaves to dry up, if it is a potted plant, pay attention to prevent sun exposure, you can move to a cooler place, morning and evening sunshine.

8. In the slow potting:

If the freshly bought gardenia has fallen leaves, it is possible that the gardenia is slowing down its seedlings to adapt to the new environment. This is a normal situation, and when the gardenia seedlings are successful, they will not produce yellow leaves!

Gardenia leaves are dry, and many people don't pay attention to this, so it's no wonder that they are dry.

Gardenia leaves yellow? 2 "tricks" to solve, the leaves are green, and the flowers are numerous.

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 withering 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 on some shade-loving flowers (such as spider plant, hosta, etc.) is easy to cause the leaf tips and leaf margins of flowers to wither, and the sunny part of the leaves appears yellow spots. Move to the pubic area.

Lack of light yellow long-term shade environment, the leaves do not get enough sunlight, can not form chlorophyll, the whole leaf turns yellow and then falls off, supplemental light can avoid this disease.

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

Lack of fat yellow 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.