Why are the leaves of the gardenia tree turning yellow? What s a good solution?

1. Gardenia likes fertilizer, should be applied with balanced and peaceful organic fertilizer, cooked soybean cake, sesame sauce residue, peanut bran, etc., after fermentation and rotting can be acidic fertilizer, but can only be applied diligently with thin fertilizer, avoid thick fertilizer, raw fertilizer. Thick fertilizer can easily lead to damage to the root name and even rot. The reaction after root rotting is on the leaves.

2. Gardenias like flowers in a humid environment, but if they are watered too much, the potting soil will have too much moisture, which will lead to a decrease in air in the soil, damage to the root system, and also make the leaves turn black and lose their leaves. Therefore, special care should be taken during the maintenance process. In addition, gardenia is a semi-negative flower, temporarily placed indoors is OK, a long time to see the sun, can not carry out photosynthesis, the leaves will turn yellow.

Three flowers with flower bones are the most vigorous physiological activities, not only to meet the needs of physiological growth, but also to meet the needs of reproductive growth, which must transport a large number of nutrients through the root system to supply the needs of leaves and flowers, at this time, if you suddenly change the environment of the conservation 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 loss, bud drop, and even death.

4. 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, gardenias must use well-ventilated, well-ventilated acidic soil, and should also be sprayed with ferrous sulfate aqueous solution frequently in maintenance to prevent yellowing.

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

6. Excessive sunlight will also cause yellowing or even falling off of leaves. 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.

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 necessary to place astigmatism for maintenance, and the light transmittance is 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.

Family flower raising knowledge! Why are gardenias yellow leaves, the master will teach you how to deal with them correctly.

Gardenia if overwatered (daily watering is equal to long-term rain and heavy waterlogging rotten roots), drought (potting soil has dried up and not watered in time), culture soil compaction (root system is not breathable), barren (lack of fertilizer), application of thick fertilizer (burning roots), lack of sunlight will cause yellow leaves and leaf loss.

Gardenia leaves are yellow, where overwatering (waterlogging), lack of fertilizer, lack of iron, lack of sunlight, pests and diseases (insect traces and lesions can be seen, very rare), these five conditions will produce leaf yellow, but the state of yellow is different:

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. The yellow of drought and water deficiency is not the same as the yellow of water more, the yellow of water shortage 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. Seared yellow.

Strong sunlight directly onto some shade-loving flowers (such as spider plants, hostas, etc.) is easy to cause the leaf tips and leaf margins 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 will not get enough sunlight to form chlorophyll, and the whole leaves will turn yellow and then fall off, and this disease can be avoided by supplementing light. The yellowing of flowers caused by excessive fertilization or excessive concentration is manifested in 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 fertilizer 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.

Gardenia is an acid-loving plant, in addition to watering, fertilizer and other factors will cause gardenia yellow leaves, there is also a yellow leaf reason: iron deficiency yellow leaves, in daily watering can add ferrous sulfate with water to water gardenias, can effectively avoid iron deficiency yellow leaves.

(1) Factors of improper moisture.

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: depot the flowers in a ventilated and cool place to dry the soil 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) Factors of improper lighting.

If the gardenia is placed in a shaded environment for a long time, then the leaves will turn yellow or fall off because they do not get enough sunlight, so it is best to supplement the light immediately.

3) Factors of improper fertilization.

Gardenia planting process fertilization should pay attention, too much or too much concentration is easy to cause plant yellowing, the tip of the new leaf will appear brown, the general leaf surface is thick and dull, and the concave and convex are not stretched, and the old leaves are scorched and fall off. 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) Factors that are too low in temperature. Too low a temperature can also cause yellowing of 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.

If there is a red spider, it is good to go to the flower market to sell the mites and spray them twice, once every 10 days. Pour ferrous sulfate water once every seven days, and pour it three times in a row.

Increase light, regularly apply vinegar and water to water the flowers, improve the soil pH, and maintain slightly acidity.

It loves light, but it can't be exposed to the sun.

Iron deficiency, ferrous sulfate solution watering.

Gardenia leaves are yellow, and if you treat it in time, you are not afraid of not raising it well.

I don't know, my gardenias are dying, and there are only a few leaves.

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 old leaves in the lower part 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 hinder the development of xylem in roots and stems.

The potting soil is too wet or too dry.

Summer exposure. Potted gardenias should be poured out of stagnant water in time after rain, and alum fertilizer water should be applied in time when the leaves are yellow.

In the north, gardenias are often introduced from the south in the first year, the flowers are large, and the second year becomes smaller, the leaves turn yellow and fall off easily, and in severe cases, the plants die. The main reason is that the soil in the north is alkaline, the climate is dry and the water quality is not suitable for its growth. Therefore, when introducing seeds from the south, as much soil should be transplanted as much as possible.

Usually water the stored rainwater or soak the green grass and peel in water, or you can use salt-free swill water after fermentation, if you can add 0 1 kg of ferrous sulfate in 50 kg of water, the effect is better. In the peak growth period, top dressing with research water can promote the flourishing of branches and leaves, and the leaf color is dark green and bright. In spring and autumn, growth is slow.

Apply thin liquid fertilizer once every 2 3 weeks, after entering the summer, the temperature rises, the growth is gradually vigorous, and the liquid fertilizer can be used for 7 10 days. In the morning and evening, you can also use clean water to drench the leaves and nearby ground to increase air humidity, and before the autumn frost, move to the winter environment where the temperature is not lower than 0 for wintering.

Yellowing caused by lack of fertilizer: This yellowing disease starts from the old leaves in the lower part of the plant and gradually spreads to the new leaves.

Nitrogen deficiency: simple leaf yellow, new leaves small and brittle.

Potassium deficiency: The old leaves turn green to brown.

Phosphorus deficiency: The old 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 eventually the leaves will dry up and die. In this case, the aqueous solution of ferrous sulfate that can be sprayed can be prevented.

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 0·8% boron and magnesium fertilizer can be sprayed to prevent and control. Excessive watering can also cause yellow leaves.

I don't know what kind of yellow you are?

Most of the causes of gardenia yellow leaves are caused by improper management in the cultivation process, such as too much water or insufficient water, too strong or too weak sunlight, too much fertilizer or lack of nutrients. We can only solve the problem of yellow leaves by figuring out the causes of yellow leaves, but how can we know what specific causes of yellow leaves?

Gardenia (details).

1. Caused by excessive water: the leaves are yellow, the young leaves are dark yellow and have no luster, but the old leaves have not changed much, and the new shoots have shrunk but do not grow.

Solution: Place the flowers in a ventilated and cool place, and wait for the excess moisture in the soil to dry out on its own before putting them back in place.

2. Yellow leaves caused by insufficient water: dry yellow, mainly in disguise: the leaf sheath is withered, the old leaves are first yellow and finally fall off, and the growth of young leaves is not greatly affected.

Solution: Since it is caused by lack of water, of course, it is to replenish the water, but pay attention to a certain degree in the process.

3. Yellow leaves caused by too strong sunlight: burning yellow, manifested as leaf sheath or leaf edge wilting, and yellow spots will appear on sunny leaves.

Solution: Move the flowers to the shade.

4. Yellow leaves caused by lack of sunlight: lack of light yellow, because the flowers are hidden in a dark place for a long time, resulting in their inability to synthesize chlorophyll, and finally the leaves are yellow and fall off.

The solution: move the flowers to a sunny place.

5. Yellow leaves caused by overnutrition: the top of the new leaves appears dry brown, and the leaves are yellow and dull.

The solution: stop fertilizing.

6. Yellow leaves caused by nutritional insufficiency: the color of young leaves gradually fades, and finally yellow.

The solution: fertilize the flowers.