Goose palm wood leaves yellowing how to do, 5 reasons and remedies / focus on light

Goose palm wood, a healthy green plant, not only looks beautiful, but also can absorb nicotine and harmful gases and take care of people's health, so many families will raise a pot. But in the process of breeding, many flower friends will encounter the symptoms of yellow leaves, that goose palm wood leaves yellow how to do? In this regard, the editor summed up 5 reasons, let's go and have a look!

First, the leaves of goose palm wood turn yellow, find the reason.

The yellowing of goosefoot leaves is a condition that many novices encounter during farming, which is usually caused by their failure to maintain them according to the farming methods of goosefoot. Encounter this kind of situation, flower friends must be very worried about it, but don't worry, as long as do remedial measures, goose foot wood or save.

2. Causes and remedies for yellowing of goosefoot leaves

1. Environmental mutation

As for the reason why the leaves of Goosefoot are yellow, the first thing to think of should be environmental problems, which can be divided into two situations: one is to buy Goosefoot in the flower market, because the environment changes greatly, Goosefoot can not adapt to it for a while, thus causing yellow leaf symptoms; The second is to put Goosefoot in a poor air environment, or air conditioning side, which will also cause yellow leaves to appear.

Remedy method: communicate with the store, understand the growth environment before buying goosefoot wood, and then we change to the same environment at home, after a period of time, the plant will return to health; if it is caused by poor indoor environment, it is very simple, improve the environment, simply clean up the garbage, and move the flowerpot to the ventilated place.

2, improper lighting

Goosefoot wood is a kind of indoor potted plant, it likes semi-shade environment, but avoid strong light, so giving appropriate light is necessary. However, many novices are difficult to control, resulting in improper lighting: ① insufficient light, will affect its growth, resulting in yellow leaves fall;② too strong light, goosefoot leaves are exposed, will also yellow fall.

Remedy method: When the light is insufficient, properly bask in the sun for the goose foot wood, and shade when the light is strong; when the light is too strong, move to the ventilated dark place, and water properly, and after the plant recovers, move to the semi-shade place for normal maintenance.

3. Improper watering

Goosefoot likes to be wet and does not tolerate drought. It needs sufficient water during its growth, but it cannot be watered too much, otherwise it is easy to appear yellow leaves: ① Too much watering, too wet pot soil, root system will have difficulty breathing, and a long time will cause root rot, resulting in yellow leaves falling;② Too little watering, too dry pot soil, resulting in plant water shortage leading to yellow leaves drooping and falling.

Remedy method: watering too much, move the potted plant to a ventilated place with light, let the water evaporate quickly, and change the pot soil when it is serious; watering too little, increase the amount and frequency of watering, but do not irrigate too much at a time, keep the soil moist, and spray water around the leaves or plants at high temperatures in summer.

4. Improper fertilization

In addition to watering, improper fertilization is also one of the reasons for the yellowing of Goosefoot leaves. In the process of growth, goosefoot wood needs certain nutrients. If the nutrients are insufficient, that is, the fertilizer is too little or not, the leaves will be deficient and yellow and fall off; but the fertilizer should not be too much, otherwise it will lead to too high soil concentration, resulting in burning roots and yellowing leaves.

Remedy method: Fertilization is insufficient, appropriate fertilization is given to Goosefoot wood, and attention should be paid to dilution with water every time; when fertilization is too much or too concentrated, the plant should be pulled out immediately, the root system should be cleaned, and the pot soil should be replanted.

5. Diseases and pests

In the process of cultivation, goosefoot wood will inevitably suffer from pests and diseases for various reasons, such as leaf spot disease, which will cause yellow leaves to fall seriously. In this regard, we should pay attention to do a good job of protective measures, and spray relevant chemicals, as for what to spray, in the goose foot tree pest control has a detailed introduction, here will not say more.

In general, goosefoot is still very easy to raise, but because many flower friends are novices, it is inevitable that there will be symptoms of yellow leaves. However, after reading the full text, I believe everyone has a bottom in mind, and the problem of leaf yellow can be remedied according to the above method. With regard to the yellowing of goosefoot leaves, Xiaobian introduced this, hoping to bring help to everyone.

How to do if the leaves of Goosefoot are black and fall, 3 causes are easily solved/attention to light and water

Like goosefoot, but also evergreen, this leaf is the characteristics of goosefoot wood, let people see it unforgettable. But if the lovely leaves turn black and fall, the goosefoot wood will become very ugly, flower friends must be very anxious! So, what if the goosefoot leaves fall black? In this regard, Xiaobian summarized three reasons, and attached solutions, together to understand and see.

1. Goosefoot leaves blackened and fell, looking for the cause

As a common indoor potted plant, goosefoot can be said to be very easy to raise, some flower friends often leave for a few days, it also did not die. But is this what everyone wants? Once the goosefoot leaves turn yellow, black, or even fall, although they are not dead, is there any difference between ugly and dead? In this regard, Xiaobian will tell you the reasons and solutions for the blackening of goosefoot leaves.

Second, the reason why the leaves of Goosefoot are black and fall

1. Insufficient light

Goosefoot is a kind of plant that likes semi-sun environment. When it is cultivated indoors, we should let it bask in the sun from time to time. Once long-term do not receive light, goosefoot tree leaves are prone to blackening phenomenon.

2. Too much watering

Goosefoot likes wet environment, usually should be watered more, but watering can not be too much, otherwise it is easy to cause water in the basin, damage its roots, resulting in goosefoot can not normally absorb nutrients from the soil, which will also make its leaves black.

3, the environment is too bad

Raising goosefoot wood indoors, the environment should not be too bad, especially ventilation. Once the home is too closed, for a long time, it will affect the survival physiological activities of the plant, and the result is that the leaves of Goosefoot are black and fall.

Third, the solution to the blackening of the leaves of Goosefoot

Because goosefoot leaves blacken and fall for many reasons, it is necessary to prescribe the right medicine when dealing with this problem. First, cut off the blackened leaves, and then implement different rescue measures according to different situations. The specific operations are as follows:

① If the lack of light causes the leaves of Goosefoot to blacken, it is very simple to remedy, move it to a place with good light and take good care of it. Of course, the light should not be too strong, and it can be restored after a period of time.

② If the leaves are blackened due to excessive watering, first stop watering, move the flowerpot to a ventilated place with light, and let the water evaporate quickly. After that, gradually restore watering to ensure that the pot soil is moist.

If the environment is too bad to cause the leaves to turn black, then it should be changed to a place with good air circulation, take good care of it, and it will recover for a while.

In general, goosefoot wood is a plant with strong adaptability. As long as it is carefully taken care of at ordinary times, it will grow very good-looking. But if we do not completely according to the breeding method of goose foot wood to maintain, a long time, it will also appear in various conditions, so we in the maintenance, carefully! As for the blackening of goosefoot leaves, Xiaobian introduced this, hoping to bring help to everyone.

Identification and Control of Freezing Damage to Flowers and Flowers

Potted or planted flowers and trees, in late autumn and early winter sudden cold wave southward, or because of the sudden arrival of "first frost," it is easy to cause flowers and plants to suffer cold damage or freezing damage; in spring potted flowers out of the room or facilities cultivation flowers and trees uncovered film, suddenly encountered late "late frost" or "late spring cold," is also likely to cause flowers and plants to suffer cold damage or freezing damage again. Whether it is large-scale productive cultivation or a small number of potted plants for flower lovers, the prevention of cold damage must be highly valued, otherwise it will bring you serious losses and long-term "regret."

Cold damage is a physiological disease, not an infectious disease induced by pathogenic bacteria. It generally refers to the damage caused by low temperature acting directly on flowers and plants, including cold damage and freezing damage, but excluding indirect winter drought, freezing and other winter damage.

Winter drought and freezing are indirect damages caused by low temperature. Winter drought refers to: part of evergreen flowers, in winter under some special weather conditions, such as encounter lasting and strong wind sweep or encounter not too cold but sunny days, transpiration rate is relatively high, but due to low soil temperature, roots absorb water slowly, the body water can not maintain a normal balance, so that leaves and other tissues dehydration dry damage, its essence is a drought; such as Aucklandia, jasmine and other leaves suddenly dry in dry and cold sunny days. Freezing refers to: when the water infiltration of snow into the soil and re-frozen, some plants, especially seedlings or herbaceous flowers, often and frozen soil together are lifted, so that the destruction of the close contact between the roots and the soil, or even the roots torn off; in the roots have not yet had time to recover before, and encounter weather conditions that promote strong transpiration, causing plants to wither and die. If planted in the pot of wax plum, winter put in a very cold place, because the pot soil is wet and frozen, the root lump will be lifted from the pot wall, such as not found in time, and re-planted, or moved to a warmer environment, it is also likely to be due to root naked water loss and necrosis, and finally lead to plant death.

1. Types and causes of cold damage

Because the causes of cold damage are different, the harm caused is also different. The difference between cold damage and common infectious diseases lies in: first, it is not infectious, and pathogens will not appear in the injured parts; second, the same kind of flowers and trees placed in the same environment often appear diseases at the same time at night, and the tender shoots and new leaves are the most serious; third, it occurs under low temperature or especially cold weather conditions, and the harmfulness caused is related to the types of flowers and trees, the duration of low temperature, the speed of temperature recovery, and the lower limit of low temperature.

Cold-damaged arrowroot poinsettia cold-damaged pocket turtle bamboo cold-damaged petunia cold-damaged composite arrowroot cold-damaged Marianne Dai-pink leaf cold-damaged

1. Causes of cold damage

Some ornamental plants native to tropical or subtropical regions are severely damaged or killed by exposure to temperatures above freezing (0℃~5℃ or higher) for a few days or even hours. This cold injury, which does not reach the degree of freezing in tissues, is called "cold injury," which is caused by the normal metabolism in cells being disturbed and destroyed, and toxic substances are produced. Different physiological activities and metabolic processes of flowers and plants have their own maximum, minimum and optimum temperatures. When environmental temperature changes, their physiological activities and metabolic processes will be affected differently. If it exceeds a certain range, it will destroy the coordination relationship between them and produce a large number of substances that will not be produced and accumulated under normal conditions. Further study showed that the hydrolysis rate of protein was 4~9 times higher than that under normal condition, the metabolism of nucleic acid was also seriously disturbed, and the oxidation activity of sensitive mitochondrial membrane in plant cells was also affected by cooling.

Thus: first, the occurrence of cold damage ornamental plant species, usually native to tropical or subtropical plants; second, the occurrence of cold damage temperature conditions is higher than the freezing point of low temperature damage; third, the time caused by cold damage is long and short, usually for a few days, or even only a few hours. Generally in late autumn or early winter or early spring, sudden changes in temperature, most likely to lead to tropical or subtropical flowering, foliage plants occur cold damage. Usually too tender young shoots and leaves "purple,""brown,""yellow,""wilting,""necrosis" and so on, such as frost hit a string of red, green bamboo leaves, longevity flowers, leaf flowers, purple bamboo leaves, etc., belong to this category.

Sun God cold damage vine safflower cold damage cherub cold damage mosquito repellent cold damage gold fig cold damage green emperor cold damage hulk cold damage watermelon peel pepper cold damage bamboo cold damage mosaic evergreen cold damage big leaf umbrella cold damage

2. Causes of frost injury

Freezing injury refers to the damage caused by the freezing of the internal tissues of ornamental plants in the environment below 0℃ or in the ultra-low temperature for a long time.

There are two kinds of ice crystals in plant tissues, one is ice within cells, the other is ice between cells. The former refers to the rapid freezing of plant tissue, ice crystals formed in vacuoles and protoplasm, destroying the structure of protoplasm and causing protein denaturation, protoplasm within some of the membrane will also be torn, usually leading to the tissue will be killed, so this "freeze" The result is very serious and irreversible. For example, the sudden cold wave in the north in early winter caused a sharp drop in temperature in a short period of time. In the winter of 2004, a large number of foliage plants in southern China died due to freezing damage. In early December 2005, the temperature in Hefei suddenly dropped from 12℃~15℃ to-3℃~-5℃, resulting in a large number of cultivated magnolia flowers and trees, such as Manglietia guinanensis, Yunshan Bailan, Manglietia ruyuanensis, etc. The leaves and young stems of Manglietia were severely frozen. The latter refers to the gradual formation of ice crystals in plant tissues with the gradual decrease of environmental temperature. Because the concentration of solution in intercellular spaces is generally lower than that of protoplast and vacuolar solution, under the condition of slow cooling speed, the water in intercellular spaces reaches freezing point earlier than that in cell interior and freezes. The formation of ice crystals leads to the outward movement of water in protoplasts, resulting in concentration of cell solution, protoplast dehydration, protein precipitation, cell membrane denaturation and cell wall rupture. When ice crystals are formed in the intercellular space, whether the cell tissue is killed depends on the freezing resistance of the cell and the speed and frequency of freezing and thawing. One of the mechanisms of freezing injury is protoplast dehydration, which has the same consequences as dehydration under drought conditions, that is, due to the mechanical stress generated by the deformation of the cell wall, the structure of protoplasm is irreversibly damaged. After the cell solution is concentrated, the concentration of salt ions and organic acids increases, which may also produce toxicity to protoplasm. The severity of freezing injury is related to the speed of freezing, the faster the freezing, the more serious the damage, this is because the possibility of freezing in the cell is greater when freezing is fast; if the freezing is limited to the intercellular space, the faster the freezing, the faster the cell dehydration and contraction, and the greater the damage caused by mechanical stress. The serious consequences caused by freezing injury, but also with the frozen tissue melting speed, generally in the case of ice in the cell, will inevitably lead to tissue necrosis, and frozen melting speed has nothing to do with; and in the case of cell interval ice, the faster the melting speed is harmful, this is because the cell wall quickly absorbs the water generated by melting ice and expands, but attached to the cell wall protoplasm water absorption is slow, so that it is torn and injured. For example, red bell flower, triangle plum serious freezing, due to rapid temperature rise, resulting in bark was torn and died.

II. Specific manifestations of cold damage to ornamental plants

1. Black xylem

Among all kinds of tissues of mature branches of woody flowers, cambium is the most cold-resistant, bark layer is the second, xylem and pith are the least cold-resistant. Therefore, light freezing injury only shows pith discoloration, moderate freezing injury only shows xylem discoloration, severe freezing injury only shows phloem discoloration. If the cambium in the stem or branch is discolored, it will lose its ability to recover, which may lead to the death of the whole plant.

2. Dry skin cracking and necrosis

Some flowers and trees native to tropical and subtropical regions with high water content in dried bark, such as Fusang, red bell flower, cinnamon, rich tree, big flower tiger thorn plum, golden banyan and so on. When the ambient temperature drops to about-3 ℃, not only the leaves and branches will be frozen to death, but even the outer bark of the stem, especially the root neck, will form ice crystals, cold expansion and hot shrinkage due to water in the tissue, resulting in bark cracking and necrosis, or even death of the whole plant. White orchid chilling injury purple bamboo grass chilling injury Amorphophallus chilling injury longevity flower chilling injury keel freezing injury 3, tender shoot new leaf color change one of them is "yellowing", in the cold season, because the temperature is too low, some flower leaves that require high overwintering temperature will also turn yellow or even fall off due to cold injury, such as Anthurium andraeanum, hanging branch green apple, watermelon pepper grass and so on. The second is "whitening", such as hanging orchids placed or planted in the open field, Zhu Dinghong, flower and leaf hanging bamboo plums, etc., when they encounter lower temperatures, the new shoots and young leaves will lose their original luster and appear abnormal changes of "whitening and losing green"; third, "scorched", the new shoots and leaves of some ornamental plants are "scorched" due to frost, such as Cymbidium, Junzi orchid, star anise gold plate and so on. Fourth, "purple", some ornamental plants, in the case of low temperature, the leaf tip or leaf edge "purple brown" phenomenon, such as money tree, ink orchid, camellia (new leaves) and so on. 4. Ornamental plants with high water content in leaves, shoots or stems scalded by boiling water, including some succulent plants, such as green apple, ash, mulberry, Rieger begonia, flower vine, orchid, taro, aloe, longevity flower, palm bamboo, Canadian jujube (seedling), Washington sunflower, money tree, hulk, etc., when the ambient temperature suddenly drops from 5 ℃ ~ 8 ℃ to-3 ℃ ~-5 ℃. And lasted for a long time, its new twigs and leaves, as if they had been scalded or cooked by boiling water, all died in a short time, and the dry skin cracked and peeled off. 5. New shoot young leaves brown and dead some underdeveloped ornamental plants, such as golden banyan, ten meritorious works, star anise gold plate, oleander, rich tree, Phoenix tail iron, etc., like a fire, very ugly. 6. plant necrosis hollow succulent plants, when encountered with frost injury, often lead to plant dryness and hollow, and necrosis of the whole plant. Such as cactus, cactus, unicorn, three-angled arrow and so on. 3. Prevention and treatment of cold injury of ornamental plants 1. Prevention of cold injury of ornamental plants (1) choose more cold-resistant flower species. Flower lovers should choose flowers and trees for foliage, flowers or fruit according to the lowest temperature in normal years in your area or the highest room temperature that can be maintained in winter in your home (usually 5 ℃ ~ 6 ℃). Located in the general home in the Yangtze River basin, without heating equipment, camellia, tea plum, jasmine, magnolia, gentleman orchid, Belgian rhododendron, plum blossom, wax plum, bergamot, dai dai, red palm, cycad, etc., can not choose variable leaf wood, bamboo taro, reticulate grass, desert rose, rhododendron, flutong, Phalaenopsis, Mariandai powder, taro, money tree and so on. (2) Cold resistance training in general potted plants, such as five-needle pine, black pine, red pine, Huangshan pine, papaya, elm, triangular maple, plum blossom, camellia, ginkgo, dragon cypress, Platycladus orientalis, cypress, etc., can be considered for overwintering, and it is best to carry out anti-freezing exercise in several stages after the end of their growth in the current year. The first stage is 0 ℃ ~ 6 ℃, which takes several days to weeks and is given sufficient light. Evergreen can convert starch in leaves into sugar, large vacuoles into several small vacuoles, and some fat tree species can convert starch into fat. The second stage is-3 ℃ ~-5 ℃, the fine structure and enzymes in the protoplast are recombined so that the cells can tolerate the dehydration caused by freezing, and the third stage is between-10 ℃ ~-15 ℃, which makes the protoplast have strong freeze tolerance and survive the cold winter. And some cold-resistant succulent plants, such as long-term balcony or open field maintenance, have a gradual adaptation process, such as rat tail palm, 12 rolls, sedum tree, gemstone flower and so on, which can be raised from 0 ℃ to-5 ℃ ~-7 ℃. Zhu Dinghong freeze injury Camellia, rich coconut, king coconut, coconut, aloe, aloe, goose palm wood, spring plum, plum, orchid, kumquat, butterfly orchid, beautiful needle sunflower, sweet-scented osmanthus, palm bamboo, turtle back, bamboo, anise iron, star anise, golden plate, red bell, oleander, fish-tail, palm, rich trees, cycads, dried cycads.

(3) strengthen the cultivation and management of cold resistance.

After the Mid-Autumn Festival, control the water and fertilizer supply of potted ornamental plants, appropriately increase the application of phosphorus and potassium fertilizer, promote the Lignification and tissue development of branches, and enhance their cold resistance, such as pouring or spraying 0.3% potassium dihydrogen phosphate solution. Pruning or manual removal of some leaves (such as Magnolia) in winter to reduce transpiration area can have a good effect on the prevention of low temperature injury. Strengthen the prevention and control of diseases and insect pests and promote the growth of plants without autumn shoots or tender shoots.

(4) to protect the tree from freezing.

For tall camellia, sweet-scented osmanthus, Michelia, Magnolia, Canadian jujube, cycad, etc., the trunk can be bundled with grass rope or film, the trunk can be white or the crown can be whitened (7% 10% lime milk); the crown mask can be bound with plastic film, and can also be sprayed with wax or liquid plastic, which can have a certain anti-freezing effect.

(5) artificial warming to ward off cold

Potted plants shelved in the greenhouse can be heated in the greenhouse with electric heaters or coal stoves in especially cold weather, especially in the coldest part of the day from 5: 00 a.m. to 6 o'clock in the morning. Cover the greenhouse with straw curtains or blankets to keep warm. Generally, plants can be covered with double-layer plastic bags at home; potted flowers placed indoors, if conditions permit, can turn on the air conditioner from 6 a.m. to 10:00 to avoid chilling damage to Anthurium andraeanum, Amorphophallus, Magnolia, Phalaenopsis, Oncidium, Cymbidium, Cymbidium, etc. Camellia, sweet-scented osmanthus, Michelia and other flowers and trees planted on the ground can spray water on the canopy at the dawn of frost or ignite anti-frost smoke before frosting in the morning, which can effectively prevent "radiation frost".

(6) postpone germination and prevent night frost.

The use of growth regulators or other methods to prolong plant dormancy and delay germination can avoid frost caused by cold wave in early spring. For example, spraying B9, ethephon, penicillin, potassium naphthylacetate (250mg/kg~500mg/kg), or maleic dihydrazide (0.1%-0.2%) solution before germination or at the end of autumn has a good effect. Such as potted flowers encounter "night frost" after coming out of the room. It can be covered with double-layer large plastic film and will be removed after the temperature picks up during the day.

2. Treatment of cold injury of ornamental plants.

(1) reasonable pruning

Reasonable pruning measures should be taken for plants suffering from cold injury, and heavy pruning should not be carried out, otherwise it will produce harmful side effects. So how to control the amount of pruning? It is necessary to cut the damaged organs to healthy parts to promote the renewal and growth of branches, and to ensure the relative balance of underground and aboveground organs. Generally pruning immediately after the injury, the damaged part of the branch 1cm~2cm can be retained to prevent the healthy part of the branch from drying down again; if it is pruned after the beginning of spring, it can be cut to a healthy place to facilitate wound healing; practice has proved that the recovery speed of the damaged plant after reasonable pruning is faster than that of re-pruned and non-pruned plants.

For general evergreen potted woody flowers and foliage plants, all dead parts should be cut off in time and moved to a warmer environment.

(2) protect and repair wounds

For the thick flower plants that are only partially frozen on the dry base (northwest), the necrotic part can be gouged out, the wound healing agent can be smeared, and then protected by thin film, so as to create a warmer small environment for it; for some damaged bonsai plants, it can be remedied by bridging or changing roots.

(3) strengthen the prevention and control of diseases and pests

After being harmed by low temperature, ornamental plants are vulnerable to diseases and insect pests because of their weak tree potential, so chemical agents can be applied in combination with the prevention and control of freezing injury. Among them, the effect of fungicide plus moisturizing adhesive is better, followed by fungicide and high fat film, which is better than simple fungicide or whitening agent. Because the main fungicide can only play the role of surface disinfection and sterilization, the auxiliary moisturizing viscose and high-fat film not only play the role of moisturizing, but also play the role of warming, which are conducive to the formation of frostbite callus and promote the healing of frostbite.

(4) careful fertilization

For freeze-damaged plants, high concentration chemical fertilizer should not be applied immediately after overwintering, but should be sprayed or irrigated with low concentration liquid fertilizer after the temperature rises and the root system resumes its absorption function, such as 0.3% potassium dihydrogen phosphate and 0.3% urea solution, alternately spraying or pouring, the effect is very good.