What causes camellia leaf fall?

The causes of camellia leaf falling off are generally too dry or too wet potting soil, poor drainage, application of thick fertilizer or raw fertilizer, diseases and pests, etc.

Leaf loss after flowering may be caused by the potting soil being too dry. Because the plants after flowering should sprout and enter the growth period, if the watering is insufficient or impermeable, it is easy to cause the leaves to fall off. Potted camellia should be planted in loose, fertile and well-drained acidic soil, and alkaline soil should be avoided.

The size of the pot should be appropriately proportioned to the seedlings.

Daily maintenance should be placed in a moist and ventilated place with half shade and half yang. Have more than 5 hours of light. The amount of watering should also vary with the growing season and the season.

It can be kept generally moist at ordinary times, and it can be slightly wet during the growth period. In the hot summer, depending on the dry and wet potting soil, water once in the morning and evening. Do not pour cold water in the hot sun.

Nitrogen-based fertilizer should be applied 1 to 2 times a week or so to promote the growth of branches and leaves. Apply phosphorus-based fertilizer 1 to 2 times during the bud growth period, and once every 10 days.

Camellia is the most susceptible to scale insects and spider mites. This is due to the overlapping of the blades too densely and poor ventilation. The control measure is to remove the overly dense branches and leaves and make them ventilated. For pests, you can use a small toothbrush dipped in soap powder water to get rid of harmful insects. <>

Although camellia is not so precious, it also has its own unique charm. The red flowers in the green leaves always attract attention. But plants can also get sick. What happens when camellia leaves drop? What causes camellia flowers to drop flower buds?

Water rotten roots lead to camellia leaves, some flower friends camellia buy not for a long time, watering is also very diligent, due to the large pot, the root soil is too wet for a long time, will suffocate the roots, resulting in camellia roots rotten, so the leaves.

Anthranose, which occurs in the leaves of camellia, mainly occurs in adult or old leaves. The lesions are nearly round or irregularly shaped, water-stained dark green, and finally yellowish-brown or reddish-brown. The lesions have tiny black spots.

The lesions vary in size, some can expand to more than 1 2 of the leaves, and there are yellow-brown raised lines at the edges, which are clearly demarcated from the sound parts.

Poor ventilation, some camellia leaves are caused by poor ventilation, especially in winter, long-term indoors, poor ventilation, air pollution or room temperature over 20, will also cause buds and leaves.

Solution: Remove litter and eliminate the source of infection.

Strengthen cultivation management and increase the application of organic fertilizers. Frequent weeding and reasonable irrigation to enhance the disease resistance of plants.

In the early stage of the disease, spray once every half a month with the same amount of 150 times Bordeaux solution, 65% zebsen 600-800 times, or 70% methyl tobuzine 1000 times, 2-3 times.

Good ventilation should be ensured. If you water too much, you should have a better permeability to the soil, such as pine hair, and the soil should be a little wet. Camellia likes slightly acidic humus, if the soil is too sticky, it is easy to accumulate water, the root system can not breathe, affecting the normal growth, followed by the pH of the soil, if the soil is alkaline, it is easy to cause the leaves to dry and tip, and it is also common to lose leaves and buds.

At this time, you can go to the flower shop to buy ferrous sulfate supplements, spray ferrous sulfate with aqueous solution, according to the condition of the plant 1 2 once a week. <>

Drought, a prolonged drought in the pot, resulting in the inability of the leaves to absorb water, which eventually leads to the appearance of defoliation.

There are several possible causes of camellia leaf loss:

Overwatering leads to leaf loss.

Pests and diseases cause leaf loss. Friends scum.

Poor ventilation leads to leaf loss.

Sudden changes in the environment lead to the loss of leaves.

There are several ways to deal with it:

Soil: Camellia has high requirements for soil, generally its soil contains humus higher, pH value is between 5, slightly acidic, its optimal soil configuration is 50% of mountain soil, 40% of sawdust or edible fungus residue, 10% of cake fertilizer powder or livestock manure and phosphate fertilizer powder.

Light: Camellia should avoid strong light, you must pay attention to the sun when planting, spring and autumn require sufficient light, but in summer you must avoid being exposed to direct sunlight, as long as you are exposed to strong light for too long, it is easy to die.

Temperature: Camellia is not cold and heat resistant, its most suitable temperature is 18 25 degrees, so the ambient temperature can not be too high and too low, otherwise it will affect its growth, the indoor temperature must be above 3 degrees in winter, if it is lower than 0 degrees will be frostbitten.

Watering: Camellia likes a moist environment, not too dry, not too wet, not dry and wet, you can water more in spring, in summer you should water twice in the morning and evening, in autumn and spring, it is best to water before and after the plant in winter.

Fertilization: Camellia is more like fertilizer, but fertilization also has a degree, must not be too much, generally fertilized about 3 times in the past half a year after flowering, and the winter application of the hole to tell the balance fertilizer can be, in order to make the flowers more beautiful, it is best to put more phosphorus fertilizer in the fertilizer.

Pruning: The pruning of camellia is very important, generally the branches and branches that affect the shape of the tree and the diseased and weak branches are cut off, as well as the finishing of flower buds, once the flower buds are too dense, they should also be combed, and the flowers should be picked in time after they wither, which can reduce the consumption of nutrients.

Turning pots: Camellia generally has to be turned over once every two years, changing a large pot is conducive to its growth, the best time to turn the pot is in April, do not remove all the old soil, but also add a small amount of base fertilizer to it, and then water.

Diseases and insects: Camellia is easy to get sick, the common main ones are black mold, anthracnose two diseases, at this time only need to spray the degree of Bordeaux liquid, the pest is mainly the tea tip moth, then the main cut off the insect tip can be.

Camellia leaf loss may be caused by insufficient watering, because camellia needs to consume water during the growth process, when there is a severe shortage of water, the plant will grow slowly and the leaves will wilt. It may also be caused by excessive water accumulation at the bottom of the pot, because the root system of the plant is soaked in water, which will block the stomata on the root system and affect the growth and development of the root system of the plant.

When watering is insufficient, it can cause camellia to lose its leaves. Camellia needs to consume a lot of water during the growth process, and when the plant is in a severe water shortage, the growth of the plant will slow down, and the leaves will gradually wither and fall off. At this time, it is necessary to replenish water in time, and you can use plenty of water to ensure that the water can flow from the bottom of the basin.

When water accumulates at the bottom of the pot, it can also cause the camellia to lose its leaves. Because the root system of the plant is soaked in water for a long time, the stomata on the root system will be blocked, which hinders the growth of the root system, weakens the ability of the root system to absorb and transport nutrients, and also leads to the phenomenon of rot and necrosis of the root system, and the leaf growth is in a state of malnutrition.

When the light is insufficient, it will cause the camellia to lose its leaves. Because the growth of plant leaves requires sufficient sunlight to ensure the normal respiration, it will promote the formation of chlorophyll in chloroplasts, and with the accumulation of chlorophyll, the leaves will turn green, and too dark environment will hinder the normal growth of leaves.

When the air circulation is poor, it will cause the camellia to lose its leaves. When the ventilation and light transmittance of the plant is poor, it is easy to be infected with brown spot disease, white silk disease, improper prevention and control, the pathogen will be infected from the local leaves to the whole plant, when the camellia is cultivated indoors, it is generally placed next to the balcony or window to ensure the normal growth of the plant.

What is going on with camellia falling leaves and how to deal with them is as follows:

First, the soil is unsuitable.

Camellia leaves are likely to be due to soil discomfort, not changing soil for a long time, the soil is too sticky or too alkaline, and the soil environment is prone to poor growth. The soil should be changed as soon as possible to ensure that the soil is soft, breathable, fertile and slightly acidic, and the soil environment is suitable for the roots to better breathe and absorb fertilizer and water. Note that potted camellia should be changed every 2 years.

Second, the light is too strong.

Camellias like light, but only astigmatism, and are afraid of direct light. If it is exposed to direct sunlight for a long time, the branches and leaves will be easily sunburned, and the leaves will fall off. For this reason, it should be shaded as soon as possible, or the camellia should be moved to a place of astigmatism, and more astigmatism should be received, and the appropriate light can promote better photosynthesis and thus grow vigorously.

3. Lack of moisture.

Although camellia has a certain ability to resist early, but the water consumed in the peak growing season is relatively large, if it is not watered for a long time, the soil is dry and early lack of water is prone to yellowing of leaves, and even falling. If it is caused by lack of water, it should be watered as soon as possible, and it is best to water it thoroughly, so that the camellia can absorb enough water, and the amount of water should be well controlled, and it is strictly forbidden to accumulate water. In case of continuous rainy days, it is necessary to drain the water from the soil in time to avoid rooting.

Fourth, improper fertilization.

Camellia leaves may also be caused by improper fertilization. It is a fertilizer-loving plant, but it is afraid of thick fertilizer or raw fertilizer, if it is not properly fertilized during the management period, it will produce fertilizer damage, which will burn the roots, resulting in yellowing, drying, and falling leaves. If this is the case, it is recommended to water the soil as soon as possible to dilute the fertilizer in the soil and drain the fertilizer.

If the fertilizer damage is serious, it is best to take the camellia out of the soil, check the root system, cut off the rotten roots, dead roots and old roots in time, and change the soil and replant.

Camellia leaf litter has soil waterlogging, excessive fertilization, and too strong sunlight, and the method of treatment and closure is to stop watering, reduce fertilization, and shade treatment.

1. Treatment method of soil stagnant water.

When the camellia leaves are shed, it is necessary to stop watering in time, too much watering during maintenance, the soil is seriously waterlogged, which is easy to cause the leaves to fall, at this time, the plant needs to be moved to the sun, accelerate the evaporation of water, alleviate the defoliation of the camellia, and then water after the plant recovers health.

2. Treatment method of excessive fertilization.

If the potato is too much fertilizer, resulting in fertilizer damage, affecting the absorption and utilization of nutrients in the soil by camellia, and then the phenomenon of defoliation, at this time to stop fertilization or reduce fertilization, so that the plant slowly returns to normal, if it is a serious case, to replace the potting soil for the camellia.

3. Treatment method of excessive sunlight.

Too strong sunlight will burn the leaves of the camellia, so that it will wither and fall, at this time to take shading measures for the plant, you can put the camellia in a cool and ventilated place to maintain, or use a shade net to block 70 to 80% of the sun, avoid direct sunlight.

Camellia cultivation method

1. Potting soil selection.

Camellia likes slightly acidic soil, when cultivating the soil should be prepared with red loam, humus soil, fine sand in a ratio of 6:3:1, and the diameter of the pottery pot of 20 cm should be used as a vessel, in the process of planting, a brick or a layer of broken tiles should be put into the bottom of the pot soil to improve the air permeability of the soil.

2. Water and fertilizer are suitable.

Camellia likes to be moist, spring and autumn can be watered every 1-2 days, to avoid lack of water to dry up the plant, summer to water once in the morning and evening, improve the environmental humidity, and camellia does not like fertilizer, only need to apply 2-3 times of mixed fertilizer before and after the flowering period, pay attention to the fertilizer posture to be used after rotting.

3. Trim properly.

In the process of cultivating camellia, it is necessary to regularly cut off diseased and insect branches, dense branches, long branches, and weak branches to reduce the waste of nutrients, and after the camellia enters the pregnant bud period, it is necessary to retain the 1-2 flower buds that grow robustly on the flower branches, and cut off the remaining flower buds to promote the concentration of nutrients and produce bright flowers.