Three, the camellia leaves have fallen off, what is the reason

If it can be saved, as long as the root system is fine, it can be saved completely.

Camellia leaves off how to solve.

1. Stop watering. 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. Reduce fertilization. If it is too much fertilization, 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 serious, to replace the potting soil for camellia.

3. Sunshade treatment. 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.

4. Replace the potting soil. Camellia is suitable for maintenance in acidic soil, if the soil is alkaline, it will affect the growth of the root system of the plant, resulting in the occurrence of leaf loss, at this time to replace the soil in time, you can use humus, sandy soil, loess mixed preparation, and regularly apply ferrous sulfate solution or add a small amount of trium acid and alkali.

The loss of flower leaves is not a criterion for judging whether it can still live, mainly depends on the trunk, especially the roots.

Cultivation methods. Place: Camellia should be placed in a warm, humid, ventilated and light-transmitting place. In spring, it should be sunny, and in summer, it is advisable to pay attention to shade, avoid direct sunlight and western sun, if it is placed on the balcony, it is often accidentally sunburned.

Watering: The cultivation of camellia bonsai should keep the soil moist, but not too wet, to prevent it from being dry and wet. Generally, it can be watered more appropriately in spring to facilitate germination and shooting; In summer, insist on watering in the morning and evening, it is best to spray foliar water to make the leaves soaked, do not use rapid water to water directly, full irrigation, should not water hot water, avoid watering at high temperature around noon; Watering in autumn should be moderate; In winter, it is advisable to water around noon, and you can spray water every two or three days.

Fertilization: Camellia likes fertilizer, when potting, it is necessary to pay attention to putting base fertilizer in the pot soil, mainly phosphorus and potassium fertilizer, and the fertilizer includes bone meal, hair, chicken feathers, bran ash, poultry manure and superphosphate and other substances after decay. Usually not too much fertilizer, generally in April and May after flowering 2 3 times of thin fertilizer water, autumn in November to apply a slightly thicker water fertilizer.

The specific gravity of phosphate fertilizer should be slightly larger to promote the colorful flowers.

Pruning: The growth of camellia is slow, it is not advisable to prune excessively, and generally cut off the long branches that affect the shape of the tree, as well as diseased and insect branches and weak branches. If there are too many flower buds on each branch, only 1 2 flowers can be thinned and kept at a certain distance, and the rest should be removed as soon as possible to avoid consuming nutrients.

In addition, it is necessary to remove the flowers that are close to withering in time, which can also reduce nutrient consumption, so as to facilitate the healthy growth of the plant and the formation of new flower buds.

Turning pots: Camellia bonsai can be turned over once in 1 or 2 years, and the new pot should be larger than the old pot No. 1 to facilitate the stretching and development of the root system. The repotting time should be in April in spring, and it can also be in autumn. Combined with soil exchange, part of the old soil is appropriately removed, replaced with fertile and loose new soil, and combined with the placement of base fertilizer.

Pest control: Camellia diseases mainly include black mold, anthracnose, etc., which can be sprayed with Bordeaux liquid for control. The main insect pests are tea shoot moths, and the control method can cut off the insect shoots, which is generally carried out in April and June.

Answer: Camellia leaves can survive if they fall off, but if the root system is already dead, it may be difficult to survive. After discovering that its leaves have fallen, it is necessary to find out the cause and improve it. If the root rot is caused by root rot, it is necessary to check the root growth status, and after the rotten roots are found, they should be cut off and disinfected.

If it is caused by infection, pesticides should be used as soon as possible to prevent and control it, otherwise it will fall defoliation twice.

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.

An important reason for camellia leaves is anthracnose. First, the diseased leaves are completely cut off and then sprayed with chlorothalonil or methyl tobuzine solution every 7 to 10 days, 3 to 4 times in a row. When spraying, potassium dihydrogen phosphate solution can be sprayed at the same time to improve the resistance of plants.

Do not water too much to prevent the soil from getting too wet, and pay attention to ventilation when increasing the disease resistance of plants.

Answer 1, excessive watering in the camellia watering, must control the amount, if it leads to potting soil water, the root system will not be able to breathe, after a long time, it will make the root system rot, the leaves wither, fall, and the branches will also dry up 2, insufficient light If the camellia is placed in a shaded environment for a long time, the branches and leaves can not receive light, which will cause the leaves to be dull, the branches and leaves are long and weak, and a large leaf may fall off when touched, and the camellia will die in serious cases. If the camellia is kept indoors for a long time, and suddenly moved it outdoors, there may also be a situation of falling leaves and dry branches, because the camellia has adapted to the mild indoor environment, if it changes abruptly, the plant is difficult to adapt to for a while, and some of the old leaves will wilt and fall.

The reasons for the loss of leaves of camellia are pests and diseases, too dry air, excessive watering, and too strong light.

1. Pests and diseases.

Camellia leaves appear yellow leaves, probably because it is not usually carefully maintained, so that it has insects. If there are pests and diseases, the growth rate of camellia will be slowed down, resulting in poor growth, and the leaves will easily turn yellow.

2. The air is too dry.

Camellia prefers a moist growing environment and cannot grow in a dry place for a long time. If the air humidity in the place where the camellia is raised is very low, its leaves will be affected, slowly turn yellow, and fall off.

3. Overwatering.

Camellia does not like waterlogging, if there is stagnant water in the soil of the flower, its roots are soaked in water, it will rot, the plant will draw less water and nutrients from the soil, and the leaves will turn yellow and fall off.

4. The light is too strong.

Camellia likes light, but is not resistant to strong light exposure, especially in summer, the light is very strong, if the plant is placed in the scorching sun to maintain, it is easy to appear that the leaves turn yellow and fall.

Characteristics of camellias

The flowering period of camellia is from October to May of the following year, and its flowering period is from January to March of each year. Camellia is divided into single petals and double petals, and the number of petals of double camellia can reach up to 60, which has extremely high ornamental value. Camellia is suitable for growing in slightly acidic soil rich in humus, which can make camellia bloom quickly.

The color of the pure flower is relatively rich, with red, white, purple, etc., and there are also mixed color camellia with color markings. The floral fragrance of camellia is more intense, can make people happy, is a better ornamental flower plant, in the flowering period, camellia needs to receive no less than 5 hours of light a day, but when the light is too strong, to do a good job of shading measures for camellia.

Too much water in the basin: causes: Camellia does need a sufficient amount of water to grow and bloom.

However, if there is water in the pot, its roots may rot. This affects the uptake of nutrients, which can lead to leaf dropping. Workaround:

Stop watering first, then place it in a ventilated area and raise the pot to allow the water to evaporate quickly.

Occurrence of diseases: Causes: There are diseases that can endanger the leaves, causing them to fall.

For example, "anthrax" mainly threatens the leaves, causing spots on the surface of the leaves to appear first, and the spots are easy to fall after gradually expanding. Solution: Strengthen management and prevent diseases before they occur.

After the occurrence, spray in time** to avoid more serious conditions.

Precautions for camellia farming

Camellia should be repotted or transplanted in October to February of the following year in the solar calendar, especially in November is the best season for camellia transplantation, after November, the later transplanted, the more unfavorable it is for plant recovery. Many friends like to move seedlings during the Spring Festival, which is one of the main reasons for the poor growth of camellias.

Loose and breathable, weakly acidic soil is most suitable for camellia growth, and it is best to bring a certain fertility, such as: "orchid soil", garden soil, red sandy soil, etc., whether it is a pot plant or a ground plant, this kind of soil should be used as a medium as much as possible. Some people think that the red soil is highly acidic, so they use the red soil to plant camellia, in fact, although the red soil is acidic, but the viscosity is strong, the air permeability is poor, and it is not conducive to the roots of tea peanuts.

Camellia leaves may be caused by factors such as poor ventilation, unsuitable temperature, overwatering, pests and diseases. In the process of maintaining camellias, it is recommended to place them in a well-ventilated place and avoid being in a closed and stuffy environment, otherwise it will affect the growth of tea molds and flowers.

The most suitable growth temperature for camellia is between 18-25, if the temperature is higher than 35 or lower than 5, camellia is prone to leaf loss.

When cultivating camellias, you need to wait for the soil surface to dry before watering to avoid root rot and leaf loss.

When cultivating camellias, we must do a good job in the prevention and control of pests and diseases, strengthen management, enhance the disease resistance of plants, and timely impheresy spraying in the early stage of pests and diseases.