What should I do if the branches of a gardenia turn completely black?

The main mast is black from the bottom to the top, and most of the water is rotten and untreated; The branches of the mast are black from the top downward, the leaves are yellow first, the dry pointed brown edge, and the green leaf hanging branches fall when they touch slightly: the leaves are black and the stems are black, and the fertilizer damage and water damage are compatible. As long as the main pole near the root is green, the branch is cut off, and the pole is broken, there is still salvation.

The upper branches of the mast are black, and the base root will be diseased. Scissors sterilize from the blackened part to the green part, and the wound is sealed with carbendazim to prevent infection. Check the potting soil:

There is no blackening in a circle of branches near the root, the loose soil root is filled with evil mildew, the potting soil is not dry and not watered, and it is used according to the instructions, three times in a row. At the same time, the pruning rod is sprayed, and the residual flowers are all cut.

If it is wet for a long time and does not dry and the compaction is serious, too much fertilization, blackening near the roots, repotting and changing the soil, soaking the roots in water, cutting off the blackened fibrous roots to the whitish place, taking out potassium permanganate disinfection for 5 minutes, soaking the root powder or Bikagen Congcong for 15 minutes to dry, and resting in the pot and ventilation and astigmatism on the sand.

If the leaves of your gardenia tree turn black, it may be that you have watered too much, and the water in the flower soil is generated, causing it to not breathe smoothly, so the roots are rotten, of course, the roots are in the soil, you can't see it, but you can see the appearance of the leaves turning black.

Gardenia blackening, may be caused by improper watering, temperature discomfort, improper fertilization or pest harassment, etc., need to drain the water in time to prune the rotten roots, timely for the plant to keep warm or cool treatment, use garlic water or insecticide spraying insecticide, fertilization should be careful not to use raw fertilizer and thick fertilizer.

1. Control watering

After finding that the gardenia has turned black, the potting soil of the plant should be turned over in time to discharge the excess water accumulated in it, and most of the reasons for blackening are caused by water and rotten roots, and the plant needs to be removed from the soil, pruned off the rotten root system, replanted into the new soil, and strictly controlled the water.

2. Adjust the temperature

Gardenia is a plant that likes to live in a relatively warm and humid environment, has a certain cold resistance, but is very intolerant to high temperatures, once it is too high, it is higher than 35 degrees Celsius for a long time, or the temperature is lower than minus 5 degrees Celsius for a long time, the plant will be black, so it is necessary to adjust the temperature in time to keep warm and cool down.

3. Reasonable fertilization

Gardenia is a fertilizer-loving plant, in the flowering period more need a large amount of fertilizer supply, so when adding fertilizer for gardenia, it is necessary to use nitrogen, phosphorus and potassium compound fertilizer, avoid the use of raw fertilizer and thick fertilizer, avoid the use of too thick and heavy fertilizer, uphold the principle of thin fertilizer diligent, moderate and appropriate amount, so as not to cause fertilizer damage to black leaves.

4. Prevention and control of pests and diseases

Gardenia infected with black rot or brown spot will also appear blackened leaves, and if the number of pests is too large, the leaves of the plant will be seriously damaged and blackened, if the pests are not serious, you can spray them with garlic water, if the situation is very serious, you should use a special insecticide after pruning.

1. The main thing is that you water too much, reduce watering, place a sunny place, and cut off the dry leaves. After a period of time, new leaves can grow, pay attention to control the amount of watering, is the key, see dry in watering. Pay attention to the frequency of watering to avoid local edema or decay.

2. Watering once permeable, more water flows from the bottom of the pot than usual, the purpose is to dilute the fertilizer accumulated in the pot soil. In the future, insist on watering water when you see dry wetlands.

3. Place it in a ventilated place with strong scattered light, if the leaves are not wilted, you can bask in the sun for one or two hours a day, if the leaves have not withered, you can increase the sun time, and if not, retract it.

4. Take different measures to prevent and control it, and generally apply well-rotted human feces or cake fertilizer. 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. For this case, ferrous sulfate can be sprayed.

The solution is to touch the mud with your hands, and then water it when it is dry, and the water should be watered thoroughly until the water flows out of the bottom of the pot, but do not let the bottom of the pot form stagnant water.

Growth habit: 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 will fall off.

In addition to normal watering, the foliage and nearby ground should be sprayed frequently with water to increase the humidity of the air opening appropriately. Ant Circle.

The growing period is 18 22, the overwintering period is 5 10, and the temperature below -10 is susceptible to freezing.

Do not be exposed to the scorching sun, but often some people mistakenly think that gardenias require full shade, so as to cause mistakes in cultivation, in fact, pay attention to the cultivation of its cool environment at the same time, to maintain 60% of the light throughout the day, in order to meet the needs of its growth.

Soil, water and fertilizer contain alkali, all of which make the plant unable to absorb iron, and affect 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.

If the potting soil is wet all the time, it is overwatered, resulting in rotten roots. Don't water it for a while, let it bask in the sun, maybe it will be lacking in light.

Possible causes:

Too much light. Gardenia likes semi-shade and is afraid of strong light exposure, so it is required to have about 50% shade to avoid direct sunlight.

But don't overwater because too much water in the potting soil will cause less air in the soil and root rot. Therefore, special care should be taken during the maintenance process.

The potting soil is too dry and the leaves lack the necessary moisture**. In particular, too much sunlight is more likely to scorch the leaves.

Lack of fertilizer, often start from the lower part of the old leaves, when the lack of potassium old leaves from green to brown, can be applied rotting cake fertilizer.

Raw fertilizer was applied to burn the roots, causing the leaves to scorch. Fertilizer must be used after full decomposition, if inorganic fertilizer is used, more attention should be paid to it, and thin fertilizer should be applied frequently to ensure safety.

What to do: 1. Remove the diseased fallen leaves in time and destroy them in a centralized manner to reduce the source of infection.

2. Pharmaceutical prevention and control. Spray 1% Bordeaux solution before the onset of disease to protect the plants from infection; During the onset of the disease, 500 800 times of 75% chlorothalonil wettable powder can be sprayed.

3. At the beginning of the disease, the rhizosphere soil can be watered with 30 50 times of ferrous sulfur sulfate (alum), or "alum fertilizer water" (kg of ferrous sulfate, 5 kg of soybean cake, 15 kg of pig manure can be mixed, and applied after 10 15 days of fermentation and decomposition) and water at intervals. Foliar foliage can also be sprayed with an aqueous solution of ferrous sulfate.

Gardenias often have this problem, the leaves dry out, the buds turn black, what the hell is wrong?

Leaf spot disease was sprayed with 65% zeb wettable powder 600 times or methyl tobuzine 800 times.

There are several situations in which the leaves turn black: poor soil, water accumulation in the pot, poor ventilation, excessive fertilization, prolonged lack of water or black rot. According to these situations, find the cause and rescue the symptoms.

Gardenia flowers.

The phenomenon of blackened and wilted leaves is since, first of all, we must think about whether we have watered more, the watering principle of gardenia is to see that the potting soil is dry and then watered, and each watering should be watered thoroughly. When the climate is more humid, it is necessary to save this lead watering.

The optimal growing temperature for gardenias is 16 -18 . Low temperature and direct sunlight are very unfavorable for the growth of gardenias, so it is advisable to maintain 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 seen and the temperature is not lower than 0, so that it can be dormant, and the temperature is too high to affect the flowering of the next year.

If you find that the gardenia has insect infestation, if it is not too serious, you can make your own pollution-free powder. If you find aphids, you can break two garlic heads into juice and add 1 liter of water, and then spray the diseased plants. If there are whitebugs, you can use 1g of laundry detergent with 120ml of water, add a few drops of peanut oil or corn oil, mix well and spray or wet with a brush to remove them.

When scale insects are found, they can be removed with a cotton swab dipped in alcohol or soapy water. If the situation is severe, it is necessary to delay the use of pesticides.