What to do when Dieffenbachia leaves turn yellow? Adjust temperature and fertilize sensibly and prevent pests and diseases

Growing Techniques Jan 1, 1970 0 views

Dieffenbachia, a beautiful foliage plant, has emerald green leaves that stay evergreen all year round, and with spots in different shades, it really looks extremely beautiful. But during cultivation, due to improper care, many flower lovers' Dieffenbachia develops yellow leaves. So what should be done when Dieffenbachia leaves turn yellow

1. When Dieffenbachia turns yellow, find the cause

In daily life, because of the beauty of Dieffenbachia, many people grow it in pots at home. But many of them never looked up the cultivation methods for Dieffenbachia, and as a result, due to fertilization, temperature, and soil, yellow leaves appear. As for what to do when Dieffenbachia leaves turn yellow, everyone only needs to find the cause and solve it accordingly.

2. Causes of yellowing Dieffenbachia leaves and solutions

1. Soil on the alkaline side

Dieffenbachia grows best in loose, fertile, well-drained loam rich in organic matter, and this kind of soil is slightly acidic. But during cultivation, if flower lovers replace the soil with alkaline soil, or water with alkaline water for a long time, it will cause the leaves of Dieffenbachia to turn yellow. The reason is that the plant lacks absorbable soluble iron and other elements, so its leaves will slowly turn yellow.

Solution: It is very simple. Repot and change the soil, replacing it with new culture soil. If the yellow leaves are not serious, you can often water with alum fertilizer water to change the soil's acidity and alkalinity.

2. Improper fertilization

Overfertilization: Dieffenbachia likes fertilizer, and during growth it needs appropriate fertilization to ensure sufficient nutrients, but fertilization also must not be excessive, otherwise new leaves will become thick and uneven, and old leaves will dry at the tips, scorch yellow, and fall off. Solution: Stop fertilizing immediately, increase the amount of water changed so the fertilizer is washed away, or immediately take the plant out of the pot, rinse the bulbs with water, and then replant them in the pot.

Insufficient fertilization: The growth of Dieffenbachia cannot be separated from fertilizer. Once nitrogen fertilizer has not been applied for a long time or the pot has not been changed, causing the potting soil to lack nitrogen and other nutrient elements, the branches and leaves will become weak, and the leaves will be thin and yellow. Solution: Promptly change in new culture soil, and gradually increase applications of dilute, fully decomposed liquid fertilizer or compound flower fertilizer.

3. Improper temperature

Temperature too low: Dieffenbachia likes a warm environment. In winter, if the temperature is too low and no warmth-keeping measures are taken, the plant will develop yellow leaves, and in severe cases will wither, turn yellow, and die. Solution: Adjust the temperature in winter and keep the room at 13-18°C.

Temperature too high: Dieffenbachia is not tolerant of heat. Once the room temperature is too high, the plant's transpiration is excessive, and the roots cannot supply enough water and nutrients, which will also make the leaves turn yellow. Attention should be paid to adjusting the room temperature in time. Solution: Control the temperature in summer and do not let it exceed 30°C.

4. Light too strong

Dieffenbachia is a plant that likes semi-shade, so apart from being able to bask in the sun in winter, at other times shade is needed when the light is strong. Once Dieffenbachia is placed in a high-temperature spot and exposed to direct strong light, it is very easy to cause the leaf tips and leaf margins of young leaves to scorch, or for leaves to turn yellow and fall off.

Solution: What to do when Dieffenbachia leaves turn yellow? If it is caused by light and temperature, everyone should promptly move it to a cool, well-ventilated place.

5. Plant too dense

Some flower lovers think that the denser Dieffenbachia grows, the better, but this is actually wrong. Because when the branches and leaves of Dieffenbachia grow too luxuriantly, and it has not been pruned for a long time, the plant will become too dense, and the leaves inside cannot receive light, causing them to turn yellow and fall off.

Solution: Nitrogen fertilizer cannot be lacking, but it also cannot be excessive. In addition, strengthen pruning to allow ventilation and light penetration.

6. Damage from pests and diseases

During the growth of Dieffenbachia, due to improper care, it will suffer attacks from pests and diseases. Symptoms: In mild cases, Dieffenbachia leaves become soft; in severe cases, Dieffenbachia leaves turn yellow and fall off.

Solution: Determine which pest or disease it is, and then spray accordingly to solve it. As for what pesticide to spray, there is a detailed introduction in the pest and disease control section for Dieffenbachia, so it will not be repeated here.

Overall, Dieffenbachia is not difficult to grow, but because many flower lovers are beginners, symptoms of yellow leaves inevitably appear. However, after reading the whole article, I believe everyone has a clearer idea now. When yellow leaf problems appear, just follow the methods above. On the topic of Dieffenbachia leaves turning yellow, the editor will introduce it here, hoping to be helpful to everyone.

What to do when Dieffenbachia leaves do not grow large: supplement nutrients, give appropriate light, and replace potting soil

Dieffenbachia is toxic, but it is still grown in pots at home by many people. This is not only because it can purify the air, but more importantly because it grows well, especially its spotted leaves, which look especially charming. So when Dieffenbachia leaves do not grow large, flower lovers are all very anxious. What should be done then? Today the editor will solve this problem for everyone.

1. When Dieffenbachia leaves do not grow large, find the cause

In daily life, because Dieffenbachia has strong effects, it is grown in pots at home by many people. But for certain reasons, Dieffenbachia leaves do not grow large, thus affecting their ornamental value. At that time, flower lovers must be very anxious! In response, the editor has found 4 causes for everyone: unsuitable soil, improper light, insufficient fertilization, and pest and disease damage, with solutions attached. Let us continue reading.

2. Causes of Dieffenbachia leaves not growing large

1. Unsuitable soil

When growing Dieffenbachia indoors, potting soil is the foundation. If it is chosen well, it is very beneficial to the plant's growth. But if the potting soil is not good, such as poor drainage or not fertile enough, it will make Dieffenbachia leaves fail to grow large.

Solution: If it is the leaves not growing large due to unsuitable soil, the remedy is very simple. Everyone only needs to find some relatively fertile, well-drained soil and replace it. Of course, when choosing a flowerpot, also check its drainage.

2. Improper light

During the growth of Dieffenbachia, light is indispensable, but it likes semi-shade, so the light also cannot be too strong. Once the light is improper, symptoms such as Dieffenbachia leaves turning yellow and Dieffenbachia leaves not growing large will appear.

① Light too strong: If Dieffenbachia is exposed to direct strong light, its leaves will lose their luster, and its growth will also be affected, resulting in the symptom of leaves not growing large. Solution: Move it to a shaded place, water appropriately, and after a period of time return to normal care. Usually, when strong light appears, be sure to shade it in time.

② Insufficient light: Light cannot be too strong, but it also must be sufficient. Once light is insufficient, Dieffenbachia's ability to absorb nutrients weakens, and metabolism slows down, so its growth stagnates, and the final manifestation is that the leaves do not grow large. Solution: At this time, be sure to give it appropriate sunlight exposure.

3. Insufficient fertilization

When Dieffenbachia leaves do not grow large, flower lovers will certainly think of fertilization problems. After all, plant growth cannot be separated from nutrients. Once Dieffenbachia has not been fertilized for a long time, it will grow slowly, and its leaves naturally will not grow large.

Solution: At this time, we need to apply fertilizer once about every 10 days. After autumn arrives, another 2 applications of phosphate fertilizer can be made. Only in this way can its growth needs be met, and the leaves will slowly grow large.

4. Pest and disease damage

During growth, due to various reasons, Dieffenbachia inevitably suffers invasions from various diseases, and this will directly hinder its growth, making it slow, thus producing the symptom of leaves not growing large.

Solution: When discovering that Dieffenbachia leaves are not growing large, everyone must promptly observe their own plant to see whether disease has appeared. If so, first determine which disease it is, and then solve it accordingly. For this, everyone can refer to the pest and disease control section for Dieffenbachia.

Overall, Dieffenbachia is not difficult to grow. As long as everyone understands the cultivation methods for Dieffenbachia and is a bit careful, it will grow very beautifully. Of course, when encountering Dieffenbachia leaves not growing large, do not panic either. Just follow the solutions above. Finally, may everyone's Dieffenbachia grow beautifully~

Causes of yellowing leaves in Rohdea japonica

When growing Rohdea japonica at home, you may encounter yellowing leaves. At this time, do not rush. First clarify the cause, then treat the root cause to solve the yellowing leaf problem of Rohdea japonica!

Yellowing leaves caused by long-term fertilizer deficiency

Rohdea japonica has not been given nitrogen fertilizer for a long time or the pot or water has not been changed, and the water lacks nitrogen and other nutrient elements, causing the branches and leaves to become weak, and the leaves to be thin and yellow. If it is hydroponic Rohdea japonica, it needs to be promptly changed into new culture water and gradually given more dilute, fully decomposed liquid fertilizer or compound flower fertilizer.

Yellowing leaves caused by overfertilization

If too much fertilizer is applied, Rohdea japonica will develop thick new leaves with many uneven areas, and old leaves will dry at the tips, scorch yellow, and fall off. Fertilization should be stopped immediately, the amount of water changed should be increased so the fertilizer is washed away, or immediately take the plant out of the pot, rinse the bulbs with water, and then replant them in the pot.

Yellowing leaves caused by hot high temperatures

If the plant is placed in a high-temperature spot and exposed to direct strong light, it is very easy to cause the leaf tips and leaf margins of young leaves to scorch, or for leaves to turn yellow and fall off. It needs to be promptly moved to a cool, well-ventilated place.

Yellowing leaves caused by excessive shading

If the plant is kept in a shaded place or a place with insufficient light for a long time, it will cause the branches and leaves to turn yellow.

Yellowing leaves caused by soil and water on the alkaline side

Because the water lacks soluble iron and other elements that it can absorb, the leaves of Rohdea japonica will gradually turn yellow. When planting, choose acidic soil and water, and during the growth period often water with alum fertilizer water.

Yellowing leaves caused by poor ventilation due to crowding

If too much nitrogen fertilizer is applied, the branches and leaves of Rohdea japonica grow too luxuriantly, and with no pruning for a long time, the inner branches and leaves do not get enough light, which easily causes leaves to turn yellow and fall off. Fertilize reasonably and strengthen pruning to allow ventilation and light penetration.

Yellowing leaves caused by dry air

When indoor air is overly dry, plants often show phenomena such as dry leaf tips or scorched leaf margins. Attention should be paid to methods such as spraying water and covering with plastic film to increase air humidity and prevent the occurrence of yellowing leaves.

Yellowing leaves caused by improper temperature

If the winter room temperature is too low, the plant suffers cold damage, thus causing the leaves to turn yellow, and in severe cases to wither, turn yellow, and die. If the room temperature is too high, the plant's transpiration is excessive, and the roots cannot supply enough water and nutrients, which will also make the leaves turn yellow. Please pay attention to adjusting the room temperature in time.

Yellowing leaves caused by pests and diseases

Leaf spot disease caused by invasion by fungi and other pathogens easily causes local necrosis of leaves, with yellow spots or patches appearing. In severe cases, the whole leaf withers, turns yellow, and falls off. After infection by mosaic virus, yellow-green mottled patches appear on the leaves; damage by scale insects, red spiders, and others.

Yellowing leaves caused by strong irritation

When preventing and controlling pests and diseases, using pesticide at too high a concentration, or being polluted by toxic gases in the air, or suddenly watering with cold water when the temperature is high, can all easily cause local yellowing and scorching at leaf tips or leaf surfaces, and even the death of the whole plant. Therefore, attention should be paid to the reasonable use of pesticides and to finding ways to eliminate air pollution sources. In midsummer, avoid watering flowers with cold water around noon.

The yellowing of Rohdea japonica leaves is sometimes caused by one reason, but most of the time it is caused by multiple factors. Therefore, a correct diagnosis should be made so that the right remedy can be applied.