What to do if the branches and leaves are yellow, and what to do if the branches and flowers are yel

How to deal with the yellowing of the leaves of the oak flower.

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.

You're from the north, he's not suitable for growing in the north, you can apply some ferrous sulfate and see if it's not too much.

When iron is deficient, the veins of young leaves lose green and yellow, which will cause the whole leaf to turn yellow, and even scorched leaves and branches wilt, and finally cause the death of the plant.

In this case, the aqueous solution of ferrous sulfate that can be sprayed can be prevented.

The yellowing disease caused by magnesium deficiency 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, boron and magnesium fertilizer can be sprayed to prevent and control.

Excessive watering, freezing, etc., can also cause yellow leaves, so special attention should be paid during the maintenance process.

Nitrogen deficiency is manifested as simple leaf yellow, and the new leaves are small and brittle.

Potassium deficiency is manifested by the transformation of old leaves from green to brown.

Phosphorus deficiency is manifested by the purplish-red or dark red color of the old leaves.

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.

If some leaves are yellow and have an upward development trend of the lower part, it is generally a lack of water. If the upper part develops downward, it is generally too much water in the soil. For example, the leaves of the whole branch are yellow, and most of them are iron deficient.

Gardenias are iron-loving plants. Ferrous sulfate can be mixed with water 1:800 instead of water.

After four waterings, the leaves will gradually turn green.

However, when gardenias go through winter and approach spring, they will also produce the phenomenon of some old leaves turning yellow and falling, which is a normal metabolism. It is necessary to distinguish it from the phenomenon of water shortage.

Take it to the sun.

Is it planted in a pot? If it is planted in a pot, it may be that the roots are too large or watered too much.

If the roots are too big and the pot is too small, you can change the pot or cut off some of the roots.

Gardenia leaves are yellow, just use these tricks to solve the trick, the branches are green, and they thrive.

Change soil.

The most effective way for gardenia yellow leaves is to change the soil, remove all the original old soil, and then replace it with loose and breathable acidic soil, after raising it for a period of time, its new leaves will slowly return to normal growth.

The focus of the new soil is acidity, so we need to fully consider this factor when choosing soil materials, including the base fertilizer materials should be acidic, which can not only improve the problem of gardenia yellow leaves, but also greatly help the differentiation of flower buds and the growth of flower buds.

For potted gardenias, small seedlings are generally replaced once a year, and large seedlings can be replaced once every two or three years. There are two best times of year to repot, one is the spring when the new leaves have just grown; The other is that in the summer after the flowers have failed, you can also prune the branches and leaves while changing the pot.

Cultivation techniques

1. Soil

Gardenia is an indicator plant of acidic soil, so the slightly acidic environment of the soil is the key to determining the growth of gardenia. The culture soil should be mixed with 7 parts of slightly acidic sandy loam laterite and 3 parts of humus. It is advisable to control the pH value of the soil in between.

2. Temperature

The optimal growth temperature for gardenias is 16 -18 . Low temperature and direct sunlight are extremely unfavorable for its growth, so it is advisable to place gardenias in a sparse forest or shade shed with good ventilation, high air humidity and light transmission in summer. In winter, it is placed in an environment where the sun is exposed to sunlight and the temperature is not lower than 0, so that it can be dormant and radically changed, and the temperature is too high to affect the flowering of the next year.

3. Moisture

Gardenias like moist air, and watering should be increased appropriately during the growing season. Usually the potting soil can be watered when it is white, and it can be watered thoroughly at one time. In summer, it is hot and dry, and the foliar spray should be sprayed 2-3 times a day to increase the humidity of the air and help the first plant cool down.

However, after the flowers have buds, they should not be watered too much, so as not to cause buds.

The reasons for the yellowing of the new leaves of gardenia are: normal yellow leaves, overwatering of yellow leaves, alkaline yellow leaves in the soil, malnourished yellow leaves, and insufficient light yellow leaves. According to the specific symptoms, the cause of yellow leaves is determined, and the solution is natural.

1. Normal yellow leaves

After the new leaves of gardenia have just germinated, because the chlorophyll content in the cells is relatively small, the leaf color is tender yellow, not very green, which is normal. The color of the old leaves, the second old leaves, the second new leaves, and the new leaves gradually transitioned, from dark to light.

Solution: When the new leaves of the gardenia turn yellow normally, there is no better way than to wait. This is a major characteristic of many plants, as the leaves gradually grow, photosynthesis increases, chlorophyll synthesis increases, and the leaf color naturally changes from tender yellow to normal emerald green.

2. Water yellow

During the new leaf emergence of gardenias, if the potting soil is too watered and the potting soil is too wet for a long time, the new leaves will be obviously yellowish, which is what we often call water yellow.

Solution: When the new leaves of gardenia are yellow, two things should be done, the first thing is to reduce the frequency of watering, widen the watering interval, make the potting soil drier than before, and minimize water damage. The second thing is to check whether the potting soil is loose and breathable, and whether the excess water can flow out of the drain hole quickly after watering.

If the potting soil is loose and not well ventilated, it should be replaced in time.

3. The soil is alkaline

Gardenia is a flowering flower that prefers slightly acidic soils, and if the soil is neutral or alkaline, the new leaves will turn yellow due to iron deficiency.

Solution: When the new leaves of gardenia are yellowed due to iron deficiency, irrigate the roots with more than 1000 times of ferrous sulfate solution to adjust the pH of the soil and supplement iron. When yellowing is severe, foliar spraying of ferrous sulfate solution and root irrigation are carried out, and the leaf color will gradually recover.

4. Malnutrition

When gardenia lacks nutrients**, although it can germinate new leaves and new shoots, the color of new leaves and new leaves will be obviously yellowish, very thin, and slow growth.

Solution: When the new leaves of gardenia are yellow due to insufficient nutrients, fertilizer should be applied in time. Fertilization should be mainly nitrogen fertilizer first, applied two or three times thinly, and after the leaf color has improved, change to apply a compound fertilizer with a balance of nitrogen, phosphorus and potassium to prevent excessive nitrogen fertilizer and branches and leaves.

5. Insufficient light

When the temperature is lower than 28 degrees, try to get as much sun as possible, and when the temperature is higher than 28 degrees, shade 30% to 50% to prevent foliar sunburn. However, if the gardenia is cultivated for a long time in a place where there is no direct light or insufficient direct light, it may cause new leaves to turn yellow due to insufficient photosynthesis and insufficient chlorophyll synthesis, and the leaves will not bloom when they are long.

Solution: When the new leaves of the gardenia turn yellow due to insufficient light, move it to a place with sufficient light to maintain and pat the plum, and the leaf color will gradually recover. Exposure to low light should be given for a short period of time, and then gradually increase the light intensity by increasing the light duration.

1. Lack of fertilizer causes new leaves to turn yellow, generally speaking, this situation is relatively rare, and flower friends are easier to exclude, if the long-term has not been fertilized, the plant growth is weak, and the top dressing can be appropriately given.

2. In addition to the lack of fertilizer, there is also a very important reason for excessive humidity, the pots usually used are high and deep pots (for example: gallon pots), the soil is relatively dry, and the bottom of the pot 1 3 is still very wet.

Treatment method: ventilation, you can remove the surface layer of soil, and control watering on the basis of soil moisture.

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.

The yellow leaves of the branches and flowers are solved from the aspects of reasonable watering, adjusting fertilization, seeing light correctly, improving soil, and increasing temperature.

1. Reasonable watering: The branch flower is also the gardenia, which is yellow, which may be a problem with watering, not only too little or too much watering, but also yellowing. When there is a shortage of water, it should be watered thoroughly in time, and once it is too watered, it is necessary to stop watering and move to a well-ventilated place.

2. Adjust fertilization: Fertilization will also affect growth, resulting in yellowing. Once there is a long-term lack of fertilizer, the leaves will turn yellow and white.

If too much fertilization is applied, it will cause the leaves to be thick and dull, and the old leaves will be charred and peeled off. If the fertilization is insufficient, you can fertilize in time and supplement various nutrients. If you apply too much fertilizer, you can stop fertilizing and water in time to flush out the concentration in the soil.

3. Correct light seeing: long-term lack of light or strong light exposure will cause yellowing. When there is a lack of light, move to a location with good light to promote full light. After being exposed to strong light, Senwang should move to a cool place to avoid direct sunlight.

4. Improve soil: If the soil is compacted for a long time and is not breathable, or the soil is alkaline, it will cause yellowing. It can improve soil conditions, loosen the soil in time, and replace the slightly acidic soil on the loose and breathable bridge.

5. Increase the temperature: The branches and flowers cannot withstand the cold, and the temperature is low in winter, which will lead to frostbite and yellowing. You can move the twigs to a warm place to increase the temperature.

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.