What s the matter with the whitish leaves of osmanthus flowers?

It is caused by the excessive alkaline soil, because osmanthus prefers slightly acidic soil. Usually caused by improper maintenance and watering, the whitening of the leaves is caused by the lack of oxygen caused by overwatering. Insufficient fertilizer** can also cause yellowing of leaves.

Or it is the result of a serious illness. Improper fertilization can also cause leaves to turn yellow or white.

Osmanthus is known as one of the top ten traditional Chinese flowers, with high ornamental value, and the flowers that bloom are not only beautiful, but also exude a charming fragrance, usually need to be cultivated in the sun, if it is placed in a cool place to cultivate, it will cause osmanthus to be unable to photosynthesize, resulting in poor growth, and may even cause pests and diseases, and symptoms such as white leaves.

Solution: If the osmanthus leaves are whitish due to insufficient light, it needs to be moved to the sun immediately, and it is best to place it in a sunny place to breed, which can help it absorb nutrients in the soil, but it needs to be moved to a scattered place to breed every summer, so as to promote it to grow better.

1. Improper moisture control.

Osmanthus likes a moist environment, so the control of water is more important 2. Improper fertilization.

Osmanthus is actually more fertilizing, and the ground-planted osmanthus is generally buried twice in spring and after flowering with organic fertilizer to supplement fertilizer.

3. Disease invasion.

Considering whether the light is sufficient, if the light of osmanthus is insufficient, it is easy to grow weaker, and it is easy to be infected with diseases, and leaf blight is a more common disease of osmanthus.

Summary. Lack of light.

Usually need to be cultivated in the sun, if it is placed in a cool place to cultivate, it will cause osmanthus to be unable to photosynthesize, resulting in poor growth, and may even cause pests and diseases, and appear white leaves and other symptoms.

What is the cause of whitish on the trunk of the osmanthus tree.

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If it is cultivated in a cool place, it will cause osmanthus to be unable to photosynthesize, resulting in poor growth, and may even cause pests and diseases, and symptoms such as white leaves.

Soil discomfort each plant has different soil requirements, osmanthus has particularly strict requirements for soil, it needs to be planted in loose soil, good ventilation and water retention, high fertility, but also with acidic soil, if the soil is too wet, but also with alkaline, it is easy to induce osmanthus to suffer from pests and diseases, resulting in whitening, smaller, falling off and other symptoms.

Pest control flower leaves whitish what causes, is likely to suffer from pests and diseases, osmanthus common pests and diseases are leaf spot, coal stain disease, red spiders, aphids, etc., these pests and diseases will cause the leaves of osmanthus to white, yellow, fall off and other symptoms, and even cause the death of the whole osmanthus plant, the harm to osmanthus is very great.

Osmanthus brown spot disease.

The disease occurs in April and October, with severe onset in rainy seasons and years, and the disease spreads fastest in July and August. Osmanthus brown spot disease is a common disease of osmanthus, caused by the fungal infection of the subphylum Semi-Knowular, the osmanthus plants planted in the ground and potted plants have occurred, and the light ones affect the ornamental effect when the disease occurs, and the heavy ones cause the death of the plants. Symptoms are more common in the leaves, and most of them develop from the tips and margins of the leaves to the whole leaves.

Treatment measures: 1) Select disease-free plants as breeding mother plants. 2) Strengthen cultivation management, combined with canopy shaping, prune weak diseased branches, adjust the density of branches and leaves, and enhance tree potential.

3) When the seedlings are out of the nursery, remove the diseased leaves and spray 1000 times of potassium permanganate for disinfection. 4) At the beginning of the growing season, the whole tree body is sprayed for protection, such as 70% can kill 300 500 times of liquid, 1000 1500 times of amicida or 50% carbendazim 500 600 times of liquid.

The yellowing of the leaves of osmanthus is caused by several reasons, too much watering.

Osmanthus prefers a moist environment, but its root system is not tolerant to moisture and waterlogging. Therefore, when raising it, it should be watered in a timely manner, not too much at one time or too often, otherwise its roots will be waterlogged and cause yellow leaves.

2. Treatment method: first depot the yellow leaf plant and put it in a ventilated place to cut off the yellow leaves and rotten roots. After drying, plant it in well-drained soil, stop the water for a while, and wait for it to recover.

Sweet osmanthus. Second, the light is too strong.

1. Reason: Osmanthus does like sunlight, and receiving sufficient light is also good for its flowering. However, it does not like strong sunlight, as too strong sunlight can burn its leaves, causing them to turn yellow.

2. Treatment method: First of all, cut off the leaves with a relatively large yellowing area. Then put it in a ventilated place, shade it at the right time, and wait for it to grow leaves again.

Sweet osmanthus. 3. Sick insects.

1. Reason: If it is not cultivated properly, it will be sick or insected, and it may also make its leaves yellow.

2. Treatment method: If it is sick, you need to cut off the diseased leaves in time, and then spray the plants and soil with fungicides. If it is a raw worm, you need to brush off the adult worm with a brush and then spray it with insecticide**.

The reason for the yellowing of osmanthus leaves is temperature, light, water and fertilizer.

1. Temperature reasons

The most suitable temperature for the growth of the osmanthus tree is 15 to 25 degrees, and if the temperature exceeds 30 degrees, then its leaves may turn yellow. At this time, it is best to put it in a cooler and more ventilated place to cut off those dry and yellow leaves. In addition, in winter, it is necessary to do proper warming.

2. Lighting reasons

Although the osmanthus tree prefers sunlight, but the sun is too strong, for example, in the summer it is best to put it in a cooler place, or do a good job of shading, otherwise its leaves will turn yellow if the sun is exposed for too long.

3. Water and fertilizer reasons

When watering the osmanthus tree, you must pay attention to the appropriate amount, whether it is too much or too little, it will make its leaves yellow. Generally, it is watered after the potting soil is dry, and in addition to normal watering in summer, you can also use a watering can to spray some water on its leaves to keep it moist.

In terms of fertilizer, it is about once a month to use fertilizer, and you can use diluted organic fertilizer, which is more natural and easy to absorb. In addition, add some nitrogen, if the nitrogen is deficient, its leaves will turn yellow. Also pay attention to iron, which is also very important for the growth of osmanthus trees, although the amount does not need to be too much, but the lack of leaves will turn yellow.

Summary. Dear, hello, osmanthus leaves whitefrost, ash insect, commonly known as wax worm, white ash, also known as insect white ash. The hoarfrost you see is actually the secretion of ash worms.

According to its biological characteristics, the two best periods for the control of ash worms should be grasped, that is, the female adult expansion period (that is, with the flow of sap and the germination of buds, the body of the overwintering female adult worm begins to expand, the mother shell gradually softens, and the hip crack also increases, at this time the agent is easy to penetrate into the mother shell and the crack) and the initial hatching nymph stage. With 1000 times of 40% quick-culling emulsifiable concentrate, spraying overwintering female adults and hatched nymphs, the effect can reach more than 98%; 5% imidacloprid emulsifiable concentrate sprays 1000 times female adults, the effect is 60%, but spraying hatched nymphs can reach more than 90%. In addition, 1000 times of cypermethrin EC and 1000 times of insect killing EC were sprayed to control the newly hatched nymphs, and the effect was very good.

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Dear, hello, osmanthus leaves whitefrost, ash insect, commonly known as wax worm, white ash, also known as insect white ash. The hoarfrost you see is actually the secretion of ash worms. According to its biological characteristics, the two best periods for the control of ash worms should be grasped, that is, the female adult expansion period (that is, with the flow of sap and the germination of buds, the body of the overwintering female adult worm begins to expand, the mother shell gradually softens, and the hip crack also increases, at this time the agent is easy to penetrate into the mother shell and the crack) and the initial hatching nymph stage.

With 1000 times of 40% quick-culling emulsifiable concentrate, spray overwintering female adults and hatched nymphs to roll, and the effect can reach more than 98%; 5% imidacloprid emulsifiable concentrate sprays 1000 times female adults, the effect is 60%, but spraying hatched nymphs can reach more than 90%. In addition, 1000 times of high-efficiency cypermethrin EC and 1000 times of insect duanyu bikill emulsifiable concentrate were sprayed to control the newly hatched nymphs, and the effect was very good. Hold celery.

15-28 is the most suitable temperature for the growth of osmanthus flowers, the temperature is too high in summer, if it is not cooled or still exposed to the sun, it is easy to turn yellow. Winter temperatures that are too low and not properly insulated can also cause its leaves to turn yellow. Therefore, when raising osmanthus flowers, you should pay attention to cooling down in summer, you can put it in a cooler place, and you should pay attention to keeping warm in winter, and you can move it indoors.

This kind of flower is not resistant to waterlogging, once the water is too much, it is easy to cause its rotten roots, and the rotten roots will have yellow leaves. Therefore, when planting this plant, it is necessary to choose loose soil with good drainage, in addition, the daily watering should not be too frequent, not too much at one time, and watering after the potting soil is dry.

If less fertilizer will lead to the yellow leaves of this plant, so we should apply fertilizer reasonably during its growth period, liquid fertilizer and compound fertilizer can be, but pay attention to the concentration applied should not be too large. In addition, we should change the pot and soil in time to ensure that the potting soil is not compacted and there are enough nutrients in the soil. It is worth noting that you can't be in a hurry when fertilizing, too much fertilizer or too much concentration at one time is not conducive to its growth, and even will cause it to burn roots and yellow leaves.

Comparatively, it prefers acidic soils. If the soil is alkaline or alkalized, the leaves of this plant may turn yellow. To keep the soil acidic, you can add a little ferrous sulfate or leftover beer when watering, and also pay attention to the fact that the ferrous sulfate solution and beer should be diluted, and the concentration should not be too high.

The reason for the whitening and small fall off of osmanthus leaves may be that the groundwater level is too high and the soil is too wet; soil is alkaline; There are factories and mines that cause pollution in the vicinity, and they may also be harmed by pests and diseases (such as the damage of pronged mites). Only by finding the cause can we take corresponding measures to prevent and correct the symptoms.

Osmanthus tree, osmanthus is one of the top ten traditional Chinese flowers, set greening, beautification, fragrance in one of the ornamental and practical excellent garden tree species, osmanthus can be dustless, thick energy overflowing, can be called a must. Especially in the mid-autumn season, the cong gui is in full bloom, and when the night is quiet and round, the wine is appreciated and the osmanthus is fragrant, which makes people feel refreshed. In ancient Chinese Yonghua poems, the number of Yonggui works is also considerable.

Since ancient times, it has been loved by Chinese and is regarded as a traditional famous flower, suitable for cultivation in many regions of the country.

Have the osmanthus of flower friends been completely turned over the pot? The most likely cause is in the soil, the root system is damaged, it is a pest in the soil, it is dangerous to change the soil in this season, use difrandan to kill insects, potassium dihydrogen phosphate rooting, puffing chicken manure fertilizer.

In the past few days, the temperature has been relatively high, and each tree has a lot of new shoots and flowers. According to the advice from upstairs, I soaked a bottle of beans, and planned to use the water to soak the beans to replenish them every week.

It should be a lack of some kind of micro-fertilizer, right? I remember what plants we've seen without a certain kind of micro-fertilizer, and what color the leaves will become.