The leaves of my potted gardenia have turned yellow and there are a lot of green spots on them, what

It may be yellowing.

**There are four: iron deficiency. The soil contains too much limestone, alkali, phosphorus, manganese, etc., which will affect the absorption of iron by plants, affect the formation of chlorophyll, make the young leaf veins lose green, spread the whole leaf, and can be applied 1 500 ferrous sulfate water or alum water every 10 days.

Magnesium deficiency. Acidic red loam soil and potassium and ammonium are prone to magnesium deficiency, so that the veins of the lower leaves of the plant lose green and yellow, and can be sprayed with 1 to 2 magnesium sulfate solution, but excessive application of magnesium will cause calcium deficiency, and the development of xylem in roots and stems will be stunted.

The potting soil is too wet or too dry.

Summer exposure. To raise gardenias, we must master their physiological characteristics in order to make the leaves, flowers and fruits beautiful and improve the ornamental value.

1. Sour-loving soil: soil, water and fertilizer contain alkali, which makes the plant unable to absorb iron, and affects the formation of chlorophyll, so that the branches wither, the leaves are scorched, and even die. Use fertile, loose, well-drained acidic soil, such as mixing pine sawdust into the soil, the effect is also very good.

2. Like shade: avoid scorching sun exposure, but often some people mistakenly think that gardenias require full shade, so as to cause mistakes in cultivation, in fact, while paying attention to cultivating its cool environment, it is necessary to maintain 60 light all day in order to meet the needs of its growth.

3. Moisture-loving: If the air humidity is lower than 70, it will directly affect the differentiation of flower buds and the growth of flower buds, but too much humidity will cause root rot and branch withering, and leaf yellow falling off. In addition to normal watering, the foliage and nearby ground should be sprayed with water frequently to increase the air humidity.

4. Fertilizer-loving: It is advisable to apply ripe soybean cakes, sesame sauce residues, peanut bran and other fertilizers, which can be acidic after fermentation and rotting, but must be applied with thin fertilizer, avoid thick fertilizer, raw fertilizer, and do not apply fertilizer during hibernation. If it has been planted for less than three years, it is important not to apply human feces.

Excessive nitrogen fertilization will result in thick branches, large leaves, and thick green, but no flowering. When phosphorus and potassium fertilizers are deficient, there will also be no flowering or flower buds wilting and falling off.

5. Temperature-loving: the growth period is 18 to 22, the overwintering period is 5 to 10, and less than 10 is susceptible to freezing.

6. Timely pruning: Gardenia has strong germination power, easy to overlap branches, dense and unventilated, and nutrients are scattered. When the shape is positive, three main branches should be selected according to the shape of the tree, and other branches that have sprouted from the root tiller should be pruned at any time.

After flowering, the branches should be truncated in time to promote the germination of new branches under the cutting. When the new branches have grown three knots, the topping is carried out to avoid blind growth.

7. It is necessary to prevent yellowing. (The prevention and control methods are the same as above).

Are your gardenia leaves yellowing during their flowering period? Don't be afraid to use ferrous sulfate fertilizer, spray the leaves vigorously for a week to restore the emerald green!

Causes and treatment of yellowing of mast flower leaves:

Clause. 1. Improper moisture.

A. Too much watering, in this case, the young leaves of the mast flowers are dark yellow and dull, but the old leaves have no obvious changes, so as long as the flowers are taken out of the pot and placed in a ventilated and cool place, and then put back after the soil is dry.

b. Lack of water, leaf tips or edges are withered and dry, and old leaves are yellow and fall off from bottom to top, but the growth of new leaves in this case is relatively normal, and it should be watered enough and watered thoroughly at this time.

Clause. 2. Improper lighting.

a. If the light is too strong, the sunny part of the leaf will appear yellow spots, then it only needs to be moved to the shade to be maintained, and the newly grown leaves will no longer have yellow spots.

b. Insufficient sunlight, at this time the leaves will turn yellow or even fall off, as long as they are placed under the sun to supplement the sunlight.

Clause. 3. Improper fertilization.

a. Excessive fertilization, mainly manifested in the appearance of brown at the top of the new leaves, the leaf surface is thick and dull, and the old leaves are scorched and yellow. At this time, it is necessary to stop fertilizing immediately, and in severe cases, rinse the soil to reduce the concentration.

b. Insufficient fertilizer, insufficient fertilizer will also cause yellowing of plants, such as iron deficiency, leaves are pale yellow or white, and leaf veins are still green. Magnesium deficiency, first the old leaves yellow, then the new leaves yellow, the leaf veins are still green, then you can spray a boron magnesium fertilizer to control.

Clause. Fourth, the temperature is too low, the temperature is too low will also cause the yellowing of the leaves, as long as it is moved into a high temperature.

This year, the whole tree in my house has pale yellow leaves, and there are no new branches, is it a lack of fertilizer and iron? View the original post

Remember to adopt it.

We can get yellow ideas because there are insect eggs, and I don't know if we can get rid of them.

Reason: Gardenia is a sun-loving plant, if it grows in a dark environment without light for a long time, the leaves will gradually turn yellow, or even fall off; If exposed to the scorching sun for a long time, the leaves will also turn yellow and spots will appear.

Solution: At this time, it needs to be moved to a sunny place for maintenance, and it should be shaded when the sun is scorching in summer, or moved to a cool and diffuse place.

Causes: If you don't water properly for a long time, the leaves will turn yellow and have spots. If you water too much, the root system will rot easily, and the leaves will gradually turn wilted and yellowed.

Solution: Usually the amount of watering is too small, slowly increase the amount of watering, if the amount of watering is large, suspend watering for a short time, and put it in a well-ventilated place for maintenance, and reduce the amount of watering after it resumes growth.

Reason: This phenomenon occurs when the amount of fertilizer is applied too much or there is a lack of fertilizer. If you apply a large amount of fertilizer, fertilizer damage will occur, the root system will be burned, and the leaves will turn yellow.

Solution: If the amount of fertilizer is large, water more, let the excess fertilizer be diluted as soon as possible, and wait for the normal maintenance of the leaves after recovery.

1. Gardenia is overwatered, which makes the potting soil too much water, resulting in a decrease in air in the soil, injury to the root system, and yellowing and loss of leaves. Therefore, special care should be taken during the maintenance process. In addition, gardenia is a positive flower, temporarily placed indoors is acceptable, a long time without sunlight, can not carry out photosynthetic function, the leaves will turn yellow.

Therefore, in spring, gardenias must be maintained outdoors in full sunlight as much as possible.

2. Flowers with flower bones are the most vigorous physiological activities, not only to meet the needs of physiological reproduction, but also to meet the needs of reproductive reproduction, which must transport a large number of nutrients through the root system to provide leaves and flowers to develop the needs, at this time, if you suddenly change the environment of the maintenance site, or change the pot and start the soil, the physiological balance will be broken, the leaves and flower buds can not quickly adapt to the new environment or get the nutrients they deserve, there will be leaf drop, bud drop, and even death.

3. Gardenias also need iron to moisturize, and iron deficiency will cause yellowing. Some leaves under the roots are a little yellow, not yellowing, yellowing disease first appears on the new leaves, beginning to be pale yellow or yellowish-white, the leaf veins are still green, slowly the leaves atrophy, and even fall off and die. Therefore, gardenia must use well-ventilated, well-ventilated acidic soil, and should also be sprayed with ferrous sulfate aqueous solution frequently in maintenance to prevent yellowing.

4. Magnesium deficiency can also cause yellowing of leaves, characterized by the yellowing of old leaves and the gradual development of new leaves, the leaf veins are still green, and the leaves fall off and die when they are severe. In this case, boron and magnesium fertilizer can be sprayed to prevent and control.

5. Too much sunlight will also cause the leaves to turn yellow or even fall off. Gardenia likes semi-shade, afraid of strong light exposure, requires about 50% shade, and can only be directly exposed to sunlight in the morning and evening in summer.

It may be that the gardenia is suffering from an insect infestation, and it is time to spray the gardenia with some pesticides.

It may be caused by too much watering and the wrong way of watering.

This is because there is too much fertilizer in gardenia when planting, and it may also be because there is too much watering in daily life, so the roots have no way to absorb it, and it is easy to turn yellow.

Iron deficiency and alkaline:Gardenia likes a slightly acidic growth environment, if there is a long-term lack of iron, water and soil are alkaline, it will lead to the growth of gardenia deteriorates, the leaves are pale yellow or white, and the leaf veins are still green. Gardenia can be replaced with slightly acidic new soil, or sprayed with some ferrous sulfate diluted solution or diluted vinegar to adjust the acidity and alkalinity of the soil, thereby improving leaf color.

Soil compaction:Gardenias do not like compacted, heavy soil, suitable for growing in breathable, permeable soil, if the soil is not suitable for growth, it will lead to poor root breathing, resulting in limited water and fertilizer absorption, resulting in yellowing of leaves. Gardenia planting during the regular loosening of the soil, can be raised for a year or two to change the soil, keep the soil loose.

Potted gardenia precautions.

Gardenia in the process of growth of water and fertilizer requirements are higher, gardenia likes to grow in a humid environment, it is afraid of drought and waterlogging, so each watering can take the principle of small water frequent watering, do not let the bottom of the pot accumulate water on the line, fertilization is also very important to the growth of gardenia, the growth period can be thin fertilizer diligent.

Potted gardenias have strict control over light temperature, can grow in a full-day or half-sunshine environment, when the sun is strong enough, it needs to be shaded, and at the same time, the gardenia should be properly cooled in summer, and the gardenia should be kept warm in winter, so that the gardenia can grow better.

The yellowing of gardenia leaves is usually caused by overwatering.

At this time, you should stop watering and remove the yellow leaves from the branches. When planting gardenias, it is important not to let there be stagnant water in the pot when watering, so it should be watered many times and in small amounts.

If the gardenia has just been bought, and the yellow leaves appear without too much watering, it may be a lack of fertilizer, and some ferrous sulfate plant fertilizers can be purchased to apply. Gardenias are leafy plants and should be placed in a well-lit and well-ventilated environment.

The common causes of gardenia leaves losing green and turning yellow-green are generally insufficient light, overwatering, insufficient nutrients, soil alkalinization, and yellowing infection.

During the maintenance of gardenias, we must pay attention to the ventilation of the environment, give sufficient light, reasonable watering, proper fertilization, and often use some ferrous sulfate to maintain the acidity of the soil, so that gardenias will grow vigorously.

There are some elements missing in it, you can put some fertilizer in it to help him turn the leaves green, usually there are some elements missing in the soil, which will cause the leaves to turn yellow in the future.

Most of them are due to defects in management techniques, such as improper management of water, light, fertilization, etc., which may cause gardenia leaves to turn yellow.

1. Improper water factors, gardenia planting process watering too much, then the young leaves will be dull, the old leaves will not be affected, but the leaves will be yellow-green, the new leaves are not long, the solution is: depotting the flowers in a ventilated and cool place to wait for the soil to dry and then put back into the pot. 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.

2. Improper light factors, too strong light leads to yellow spots on the light surface of the leaves, which can be restored if placed in a shady place for a long time, if the gardenia is placed in a shady environment for a long time, then the leaves will turn yellow or fall off because they do not get enough sunlight, and it is best to supplement the light immediately.

3. Factors of improper fertilization, gardenia planting process fertilization should be paid attention to, too much or too much concentration is easy to cause plant yellowing, the top of the new leaves will appear brown, the general leaf surface is hypertrophied and dull, and the concave and convex are not stretched, and the old leaves are scorched and yellow. At this time, more water should be used to reduce the concentration of soil fertilizer. Insufficient fertilizer can also cause yellowing of plants, but the nutrients that are lacking in the plants are different, and the symptoms are different.

Nitrogen deficiency: The plants are short of nitrogen and the leaves are yellow, and the new leaves are small and brittle.

Potassium deficiency: When a plant is deficient in potassium, the old leaves turn from green to brown.

Iron deficiency: At the beginning, the leaves are pale yellow or white, and the veins are still green, and in severe cases, the veins are also yellow or white, and eventually the leaves dry up and die. In this case, the aqueous solution of ferrous sulfate that can be sprayed can be prevented.

Magnesium deficiency: yellowing 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. Can be sprayed. 7% a. 8% boron and magnesium fertilizer control.

Phosphorus deficiency: The old leaves are purplish-red or dark red.

4. The factor that the temperature is too low, the temperature is too low will also cause the yellowing of the leaves, so in the process of cultivating gardenias, we should pay attention to anti-freezing in winter, and we should also pay attention to keeping warm in the evening in early spring and early winter.