How to do yellowing of yew leaves? comprehensive consideration of five reasons / attached solution

Although the yew is a relatively precious plant, the cultivation method of the yew is not as difficult as expected, but we also need to know some skills when planting, otherwise it may cause the leaves to turn yellow. what if the yew leaves turn yellow? The following is a detailed introduction of several common causes and solutions.

What if the yew leaves turn yellow?

I. watering problem

Although the yew is not the strongest in drought tolerance, it can still survive in slightly dry soil. Too much watering will lead to rotten roots, while too little watering will make the leaf surface dull, and the top shoots will wilt, which is what flower friends often call the phenomenon of water yellow and drought yellow.

Solution: remove the yellowed leaves and water them reasonably. We have introduced in detail how to water the yew, which can be used as a reference for flower friends. In addition, we should pay attention to the good ventilation and drainage of the soil, so as to ensure that the water poured in can be absorbed by the roots, and some chemicals can be added to prevent rotting roots when watering.

2. Lighting problem

1. The light is too strong. The yew, also known as the yew, is actually a shade-loving plant. If it is often exposed to the sun, it will cause water in the tissue to be consumed too quickly, then the leaves may be burned and yellowed.

2. The light is too weak. In addition to the strong sunlight, the lack of light is also one of the reasons for the yellowing of leaves, because its leaves need normal photosynthesis. If the light is too weak, it will affect the progress of photosynthesis, then the leaves will be yellow if they do not grow well.

Solution: how to do the yellowing of yew leaves caused by lighting problems? When breeding, we can neither let it be exposed to the sun, nor put it in a dimly lit place for a long time. It is ideal to see 4-5 hours of scattered light every day.

III. Humidity problem

Humidity is easy to be ignored, but it is still important for the growth of yew. If the environment is humid and the humidity is appropriate, it will grow more smoothly. On the contrary, if the humidity is relatively low and the air is dry, the leaves may quickly dehydrate and curl and turn yellow.

Solution: pay attention to observe the environmental humidity, if the air is relatively dry, you can use a spray can to spray some water to the leaves, not only can wash the leaves to make it more beautiful, but also increase the surrounding air humidity, of course, do not spray too much water, causing stagnant water will play a bad effect.

IV. Temperature problem

1. The temperature is too high. Taxus was originally grown on a semi-shady slope, but it likes the cool climate best. if the temperature is too high, it may cause some old and weak leaves to yellowing and falling early.

2. The temperature is too low. Under normal circumstances, the yew can withstand the low temperature below minus 30 ℃, but if it is kept in an ultra-low temperature for a long time, it is inevitable that some leaves will turn yellow.

Solution: temperature caused yellowing of yew leaves how to do? Control the temperature should not be too high or too low, if the summer temperature is high, you can take cooling measures, such as spraying water or moving to the shade and so on. When there is a big temperature difference between day and night in winter, we should take precautions against the cold.

V. Environmental issues

A newly bought yew, or if it is suddenly moved to another place where the environment changes greatly, may also cause the leaves to turn yellow because it takes a period of time to adapt, which is called slow seedling in many plant cultivation.

Solution: try to ensure that the environment does not change too much, such as suddenly let it in the air outlet, etc., try to ensure that the environment is stable, do not have too much temperature difference between day and night, watering, and so on.

Is the yew poisonous? what if the yew leaves turn yellow?

Friends of yew raised at home, do you know that yew is poisonous? How to deal with yellowing of yew leaves in breeding? Now let's solve the problem for everyone.

Is yew poisonous?

The yew is toxic, and the yew is very toxic. Taxus, like many drugs, has a certain toxicity, without the guidance of a doctor, after long-term consumption in large quantities, it may produce serious side effects such as inhibition of bone marrow hematopoiesis and leukopenia. The main manifestations of poisoning caused by accidental ingestion of yew were dizziness, pupil dilation, nausea, vomiting, diffuse abdominal pain, muscle weakness and so on. In severe cases, slow heartbeat, cardiac arrest or death occurred. Pathological examination showed changes such as pulmonary edema, myocardial hemorrhage and myocarditis. Taxus does not belong to new resource food, the Ministry of Health has included yew on the list of prohibited items for health food and forbids its use as health food and food raw material.

What if the yew leaves turn yellow?

1. Serious lack of light

Although Taxus is a shade-tolerant tree species, it still needs proper light to carry out normal photosynthesis. if the light is insufficient and the photosynthates are few, there will be a lack of sufficient nutrients, and the photosynthates can not be supplied to the root system. The lack of nutrients in the root system makes the leaves yellow and lose leaves, which is a way of plant self-regulation.

Solution: put it on the balcony or outdoors in the morning and evening, and the placement cycle can be carried out every few days.

2. Serious imbalance of water content

Taxus is resistant to drought and waterlogging, such as serious water stains, the basin soil is too wet, which will cause insufficient oxygen in the basin soil, anaerobic respiration of the roots, and then develop into alcoholism, root asphyxiation, rot, resulting in the death of the whole plant.

Solution: watering should be thoroughly watered once, dry and wet, the topsoil of basin soil is dry, but the middle soil is not necessarily short of water. Watering can be combined with medicament to prevent root rot: 1 gram of diexamethasone or 2 grams of carbendazim or active root promoter can be irrigated with water. Ferrous sulfate can also be added to irrigate, the concentration should be small, not high, according to the principle of a small number of times.

Third, the lack of nutrients in the basin soil, soil consolidation, each basin with 10-20 grams of organic fertilizer, or mature cake fertilizer, combined with loose basin soil after watering, or mixed into water, but also can be combined with foliar fertilizer.

Foliar fertilizer: urea 0.3% + ferrous sulfate 0.3%

Potassium dihydrogen phosphate 0.3% + Polygala 0.1%

Mixed fertilizer into medicine solution, foliar spraying, the cycle is seven to ten days, the rest of the time to spray water, tap water needs to be placed for 2-3 days before using surface water.

As leaf fertilizer spraying is mainly absorbed by stomata, and stomata are mainly concentrated on the back of leaves, water spraying is required to spray from leaf surface to leaf back in order to have a good absorption effect. The best spraying time is around five o'clock in the afternoon.

Fourth, the small seedlings in the pot are large, and the nutrition supply of the basin soil is not enough, which results in the yellowing of the seedlings, the dense root system at the edge of the basin, the sensitivity to the external temperature, the death of the root tip, and then the yellowing, withering and leaf loss of the branches on the plant.

Solution: choose the shady time in the morning and evening to change the basin, the bottom hole of the large basin should be padded high, the bottom had better be padded with a layer of egg-sized pebbles to facilitate water penetration and no stagnant water, the basin soil should be planted with humus, and the right amount of ferrous sulfate should be added to mix evenly. One is to disinfect the basin soil, and the other is to supply iron for a long time to avoid the yellowing of leaves due to iron deficiency.

More information on how to treat yew withered leaves and teach you how to treat yew wilt

Taxus is an ancient relict tree species left over from Quaternary glaciers, which has a history of 2.5 million years on earth. It is a national first-class protected plant, but now there is also artificial cultivation of yew, so how do the leaves of yew dry up? How to treat it?

What to do if the yew leaves are dry:

Taxus leaves dry for many reasons, we should find out the reasons to solve the symptoms, such as high temperature, high density will cause leaf drying.

Causes of dryness and solutions:

A: there is a serious imbalance in moisture

Taxus is resistant to drought and waterlogging, such as serious water stains, the basin soil is too wet, which will cause insufficient oxygen in the basin soil, anaerobic respiration of the roots, and then develop into alcoholism, root asphyxiation, rot, resulting in the death of the whole plant.

Solution:

Watering should be thoroughly watered once, dry and wet, and the topsoil of the basin soil is dry, but the middle soil is not necessarily short of water. Watering can be combined with the medicament to prevent root rot: add 1 gram of divisone to water or 2 grams of carbendazim or active root promoter to water. Ferrous sulfate can also be added to irrigate, the concentration should be small, not high, according to the principle of a small number of times.

B: serious lack of light

Although Taxus is a shade-tolerant tree species, it still needs proper light to carry out normal photosynthesis. if the light is insufficient and the photosynthates are few, there will be a lack of sufficient nutrients, and the photosynthates can not be supplied to the root system. The lack of nutrients in the root system makes the leaves yellow and lose leaves, which is a way of plant self-regulation.

Solution:

Put it on the balcony or outdoors in the morning and evening, and the placement cycle can be carried out every few days.

C: small pots and big seedlings

The lack of nutrient supply in the basin soil results in yellowing of seedlings, dense root system at the edge of the basin, sensitivity to external temperature, root tip death, and then yellowing, withering and leaf loss of branches on the plant.

Solution:

Choose the shady time in the morning and evening to change the basin, the bottom hole of the large basin should be padded high, the bottom had better be padded with a layer of egg-sized pebbles to facilitate water penetration and no stagnant water, and the basin soil should be planted with humus and mixed evenly with the right amount of ferrous sulfate. one is to disinfect the basin soil, and the other is to supply iron for a long time to avoid yellowing of leaves due to iron deficiency.

D: lack of nutrients

Lack of nutrients in the basin soil, soil hardening, resulting in dry leaves.

Solution:

Each pot with 10-20 grams of organic fertilizer, or mature cake fertilizer, combined with loose basin soil after watering, or mixed into water, can also be combined with spraying foliar fertilizer.

Foliar fertilizer: urea 0.3% + ferrous sulfate 0.3% potassium dihydrogen phosphate 0.3% + carbendazim 0.1%

Mixed fertilizer into medicine solution, foliar spraying, the cycle is seven to ten days, the rest of the time to spray water, tap water needs to be placed for 2-3 days before using surface water.

As leaf fertilizer spraying is mainly absorbed by stomata, and stomata are mainly concentrated on the back of leaves, water spraying is required to spray from leaf surface to leaf back in order to have a good absorption effect. The best spraying time is around five o'clock in the afternoon.

Treatment of Taxus wilt:

Fertilizer and water: Taxus is a negative tree species, which grows slowly, but has strong resistance and grows best in cool, humid climate and acidic soil. Like fertilizer, but it is not easy to apply more potted plants, otherwise, the leaves are dense, cover branches, dry posture, or the formation of new branches grow crazy, mess up the overall shape. Taxus is not tolerant to drought and is difficult to recover after loss of water. To keep the basin soil moist, use a matrix with good water retention on the basin.

Pruning: cut off the overdense branches, or properly remove the unnecessary leaves on the branches, so that the branches and leaves in the crown should be well proportioned.

On the basin and change the basin: the root system of the yew is more developed, slightly fleshy, do not hurt the root system when going on the basin or changing the basin, pay special attention to the basin or change the basin in the growing season. Otherwise, the survival rate will be affected. Half a month after the root system was injured, the needles yellowed and withered and died.

Sunshade: yew likes shade, avoid direct light, greenhouse should be shaded and maintained, and indoor placement can be placed in a bright place.