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The main thing is the lack of fertilizer. General fertilizers are not easy to make. The calcium and iron content is not high. I once worked in a Taiwanese owner's factory, and I saw him use the leftover fish heads from the factory as fertilizer, and the effect was very good. The Iron Tree absorbs those things a little faster.
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Iron trees are acid-loving plants. Prefers warm, humid environments. Generally, iron trees should be watered with some ferrous sulfate water to maintain an acidic environment. You can go buy some ferrous sulfate and try it!
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Lack of water or fertilizer? If not, find something like rust and put it next to the roots.
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1. Too little watering.
One of the most common causes is too little watering, as too much water will cause the new leaves to not absorb enough water, resulting in a large number of new leaves turning yellow. At this time, the yellowing and withering leaves need to be pruned off, choose reasonable watering to solve this problem, it is best to choose to water once a day in the morning to ensure that the soil is moist. The time will improve after a week.
2. Overwatering.
Overwatering can also cause the leaves to turn yellow, which is caused by stagnant water. Often, the roots will rot to a certain extent. This one is more troublesome.
It is necessary to properly dig out a part of the soil to prepare the front, choose to fill it with dry soil, so as to absorb a certain amount of water, and put some desiccant in the special area appropriately, so as to reduce the moisture. This recovery will take a little longer, usually a month to slowly regain growth.
3. The soil is alkaline.
If the cultivation period is not properly maintained, the soil will be alkaline, and the iron tree needs to be cultivated in slightly acidic soil. Therefore, it is not difficult to improve the acidity and alkalinity. Choose to use ferrous sulfate solution 500 times liquid watering, generally once a week, after a month basically the soil will be slightly acidic.
You can use a test strip to measure it.
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Iron trees are not indoor ornamental plants, especially in the early summer germination period, must be fully illuminated, otherwise the new leaves will be slender and weak.
Causes of yellowing of the new leaves of the iron tree:
1.Insufficient light state cherry, iron tree in the growth of new leaves must be maintained with full sun, only the leaves hardened and then placed in the semi-shade to enjoy, if the growth period can not have good light conditions, will not grow as expected.
2.Fertilizer ant closed ingredients are insufficient, nitrogen fertilizer is the main one when growing new leaves, fertilization is applied frequently, once every half month, can be applied in holes, and liquid fertilizer can be used to irrigate the potting soil.
3.Soil alkalization, need to use ferrous sulfate solution 500 times to water the potting soil, once a week, several times in a row, can improve the color of the leaves.
4.Pests and diseases, pay attention to check whether there are insects on the leaves, such as red spiders, scale insects, etc. It can be eliminated by spraying air oil essence and laundry detergent solution. If the leaves have yellow spots and yellow spots, garlic liquid or carbendazim can be sprayed for sterilization.
5.The potting soil is too wet, although the iron tree needs a lot of water during the new leaf growth period, but it cannot be wet for a long time, otherwise the root system is prone to hypoxia, and the dullness refers to poor growth, and the leaves are yellowed or rigid.
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1. Causes of yellowing of iron tree leaves and prevention measures.
1. Moisture. Although the iron tree needs a lot of water during the new leaf growth period, it should not let the potting soil be wet for a long time, otherwise the root system is prone to hypoxia, resulting in poor growth, yellowing or ossification of the leaves, and water needs to be controlled immediately. Iron trees due to lack of water, drought will also cause yellowing of leaves, which is characterized by the bottom up of the old leaves first yellow, if the lack of water for a little longer, the whole plant will be yellow, and even die, should be watered in time.
2. Fertilization. Iron trees due to excessive fertilization or high concentration will also cause yellowing of leaves, which is manifested as thick young leaves, shiny, and uneven, should be controlled fertilizer, cultivating, watering. Iron trees can also cause yellowing of leaves due to insufficient fertilizer and low fertilizer concentration, and the fertilization interval is too long. It is manifested as the first yellow of young leaves and young stems, and if you do not apply fertilizer in time after seeing this phenomenon, it will also cause the whole plant to yellow and even die.
3. Pests and diseases.
Pests and diseases are also the cause of the yellowing of the leaves of the iron tree, so it is necessary to pay attention to check whether there are insects on the leaves, such as red spiders, scale insects, etc. It can be eliminated by spraying air oil essence and laundry detergent solution. If the leaves have yellow spots and yellow spots, garlic liquid or carbendazim can be sprayed for sterilization.
There are many reasons for the yellowing of the leaves of the iron tree, which requires us to pay attention to the maintenance of the iron tree and do a good job in prevention and control.
2. Precautions for iron trees in spring:
1. For iron trees that grow too much, repotting treatment can be considered in spring, and the potting soil can be loose, fertile, breathable, and rich in humus-containing acidic sandy soil.
2. In order to prevent the root system of the iron tree from rotting, tiles and stones can be placed at the bottom of the pot to increase the drainage effect. In order to make the iron tree plant beautiful, it can be pruned appropriately in the spring to cut off the old and weak branches.
3. Iron trees like a warm and humid environment, there can be no stagnant water in the pot, and the principle of watering is mastered between wet and dry. Iron trees like iron elements, the northern water and soil are alkaline, and there are often yellow leaves with iron deficiency, and ferrous sulfate can be sprayed regularly to make the plants grow bright green.
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Deficiency of substances, mainly iron deficiency or potting soil alkalinity is too large, but also very easy to solve, first go to the garden supplies store or near the flower market to buy a bottle of Guoguang amino acid chelated iron (garden special), dilute 600-800 times spraying, if possible, then buy a bottle of root treasure irrigation roots, can effectively improve the soil, the best combination of the two methods, 2-3 times, 15 days apart.
Iron tree, known as cycads. With its beautiful shape, flexible leaves, and shade tolerance, it can be placed outdoors or indoors, and is sold at a higher price due to its slow growth rate. Cycad likes a slightly damp soil environment, because it grows very slowly, so we must pay attention to the amount of watering should not be too large, otherwise it is not conducive to the normal physiological activities of its roots.
From March to September every year, the plants are topped with a thin liquid fertilizer once a week, which can effectively promote leaf growth. Cycads prefer sunny environments. Try to keep the environment as well as possible, otherwise the plant is prone to scale insects.
Cycads like warmth, avoid severe cold, its growth temperature is 20 30, overwintering temperature should not be lower than 5. The soil moisture should be kept at about 60% during the maintenance of iron trees, and the watering should follow the principle of seeing dry and wet.
In spring and summer, when the leaves are growing vigorously, especially in the summer high temperature and dry climate, it is necessary to water more, once in the morning and evening, and spray the leaf surface to keep the leaves fresh and green. After autumn, it can be watered once every 2 to 5 days. During the growing period, compound fertilizer or urea can be applied 1 to 2 times a month.
Urea is best sprayed with an aqueous solution to the leaves as foliar fertilizer, and the application of foliar fertilizer should follow the principle of "eat less and eat more". Peanut bran is applied once a year in early spring, and peanut bran can be directly applied to the pot surface or buried in the pot soil without water preparation. The rice washing water before cooking every day should not be stained with oil, and it should be filled with buckets and basins, and watered with liquid fertilizer the next day, which has a certain fertilizer effect.
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Buy some iron-supplementing fertilizer and apply it once a week, and my iron trees are using it.
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Why is it yellow after half a month of planting?
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Reasons why the leaves of the iron tree turn yellow:
1. Insufficient or too strong light. Cycads are positive tree species, but when exposed to continuous high temperature and scorching sun, the leaves are easy to be burned and cause the dry tips to turn yellow, especially when the new leaves have not yet stretched, more attention should be paid to proper shading. Although cycads are tolerant of semi-shade, they are placed in a shady place for a long time, and the lack of sunlight will also make the leaves green and not thick.
Therefore, cycads should be placed in a sunny place in spring, autumn and winter, and under a shady canopy in summer to avoid strong light irradiation, so as to promote the germination of branches and leaves, grow robustly, and the leaf color is green.
2. The potting soil is unevenly wet and dry. The fleshy roots of cycads are tolerant of moderate drought but not waterlogging. The potting soil can be drier, if it is too much watered, the soil void is full of water, and the root respiration is weakened, which affects the absorption of water and inorganic salts, resulting in the leaves starting to wilt from the bottom up, and the root system is darkening and the plant is dead.
However, if the potting soil is too dry, due to the lack of water necessary for growth, the leaves are more likely to become light and yellow. The principle of watering is "do not dry and do not water, water it thoroughly", especially in winter, if the potting soil is not dry, there is no need to water.
3. The soil is clay and heavy. Cycads prefer well-drained, loose and fertile sandy loam soil, avoid poorly drained clay soil, otherwise it will cause yellowing of rotten roots and even death due to lack of oxygen. Potting soil can be mixed according to 6 parts of garden soil, 3 parts of humus soil, 1 part of chaff ash, and 4 parts of humus, 3 parts of decomposed manure and cake fertilizer, 3 parts of sand soil or sawdust, and a small amount of iron powder and bone meal are used after preparation.
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1.When the iron tree grows new leaves, it should be placed in a relatively warm place and provided with sufficient sunlight.
2.If possible, you can also apply some thin fertilizer.
3.This is very good for its new leaf growth.
4.When growing new leaves, the old leaves on the plant can be cut off near the bottom.
5.This helps the plant conserve nutrients, provides new leaves to grow, and makes the plant more ornamental.
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Iron tree is now a very common ornamental plant, and we often encounter the yellowing of iron leaves in the process of planting iron trees, which requires us to know the causes and solutions of yellowing of iron leaves, in order to do a good job in the cultivation of iron trees. Today, let's take a look at the causes and solutions of yellowing of iron tree leaves for your reference.
1. The soil is alkaline.
Iron tree is suitable for slightly acidic sandy soil, soil alkalinization will cause yellowing of iron tree leaves, need to water the potting soil with ferrous sulfate solution 500 times, once a week, several times in a row, can improve the color of the leaves.
2. Insufficient light.
Iron tree in the growth of new leaves must be maintained by the sun, only the leaves hardened and then placed in the semi-shade to appreciate, if there is no good light conditions during the growth period, it will not grow as expected.
3. Excessive watering with mold.
Although the iron tree needs a lot of water during the new leaf growth period, it should not let the potting soil be wet for a long time, otherwise the root system is prone to hypoxia, resulting in poor growth and yellowing or ossification of the leaves. Solution: Control the water immediately.
4. Too little watering.
Iron trees due to lack of water, drought will also cause yellowing of leaves, which is characterized by bottom-up old leaves first yellow, if the lack of water for a little longer, the whole plant will yellow leaves, or even die, should be watered in time;
5. Excessive fertilization.
Iron trees can also cause yellowing of leaves due to excessive fertilization or high concentration; It is characterized by thick, shiny, and uneven young leaves; Fertilizer, cultivation and watering should be controlled;
6. Too little fertilization.
Iron trees can also cause yellowing of leaves due to insufficient fertilizer and low fertilizer concentration, and the fertilization interval is too long. It is characterized by the first yellow of young leaves and young stems, and if you do not fertilize in time after seeing this phenomenon, it will also cause the whole plant yellow leaves or even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning;
7. Pests and diseases.
Pests and diseases are also the reason for the yellowing of the leaves of the iron tree, pay attention to check whether there are insects on the leaves, such as red spiders, scale insects, etc. It can be eliminated by spraying air oil essence and laundry detergent solution. If the leaves have yellow spots and yellow spots, garlic liquid or carbendazim can be sprayed for sterilization.
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When the leaves of the iron tree are yellow, the plant should be moved into the sunny place of ventilation for maintenance, and the plant should be kept in a ventilated sunny place every day, and the nutrients are insufficient, and a very dilute compound fertilizer aqueous solution should be released in a timely manner.
Iron tree is a sun-loving green plant, if the light given during the maintenance period is not enough, or the plant is placed in the shade for long-term maintenance, it will cause the leaves to become soft and yellow, so how to remedy the yellowing of the leaves of the iron tree, at this time, it is necessary to cut off the yellowing in time, move it into the ventilation of the sunny place for maintenance, and give enough sunlight every day, but the strong light should be moderately shaded.
Iron tree likes to grow and develop in the soil with abundant fertilizer, if the fertilizer is less at ordinary times, it will cause the plant to lack nutrients, and the leaves are very prone to yellowing.
Iron tree is a tropical rainforest plant, more suitable for warm conditions, if the temperature of the growing environment is very low, it is easy to produce frost damage, the leaves will slowly turn yellow and fall off, then the plant should be moved into the greenhouse for cultivation, when the temperature is less than 10 when covered with a layer of agricultural mulch, or manual heating treatment.
Iron trees need enough water during the growth period, but can not cause excessive wet and cold bonsai soil resulting in serious water storage, rhizomes will be inhaled and blocked, and the leaves will slowly turn yellow, at this time to stop watering, take out the rhizomes and cut off the root rot, pay attention to ventilation after re-cultivation, and watering to ensure that it is best to see dry and wet.
When the iron tree suffers from red spiders, bud worms, brown spot and other injuries, there will be many black patches on the leaves, and finally they will gradually turn yellow and burst out.
Causes of yellowing of iron leaves:
1 The yellowing of some old leaves may be caused by uneven drying and wetting of the potting soil; >>>More
1. Lack of sunlight.
Reason: Under the exposure of sunlight, the chlorophyll in the leaves of the iron tree can play a role, making the leaves green and shiny. If it is kept in a low-light place for a long time, it is not exposed to sunlight, and photosynthesis cannot be carried out, which may cause the leaves to turn white. >>>More
1. Lack of sunlight.
The normal growth of iron trees is inseparable from sunlight, and if there is no sunlight, natural photosynthesis cannot be carried out smoothly, which will cause the leaves to lose green and yellow. Iron trees can be kept in a sunny place to maintain sufficient sunlight to promote the normal progress of photosynthesis and make the leaves green. >>>More
Milan suddenly has some wilted leaves, and the leaves have fallen a lot, which should be a symptom of dry and falling leaves caused by excessive watering or hard potting soil. >>>More
Water it, water it on a sunny day, don't water it on a cloudy day, don't let the sun shine, and you'll be fine in a few days.