What to Do When Periwinkle Leaves Turn Yellow? Detailed Treatment Methods

Periwinkle prefers a warm and humid climate and an environment with sufficient sunlight. It also tolerates partial shade, is relatively tolerant of high temperatures and drought, is not cold-tolerant, and avoids wetness and waterlogging. It requires fertile, loose soil and is not suitable for saline-alkaline land. Periwinkle is a common flower in daily life, with a long flowering period and beautiful flowers. Whether at home or in public places, it is an eye-catching beautiful flower. But during maintenance, yellow leaves often appear. What are the treatment methods?

1. Insufficient light:Periwinkle prefers a warm environment with sufficient sunlight. If a potted plant is placed in a shaded place for a long time, the leaves will turn yellow due to insufficient light.

2. Poor air permeability of potting soil:Periwinkle requires a loose substrate with good air permeability. If planted in clayey, slightly alkaline soil, the soil will become compacted, causing poor root development, which affects the growth of the aboveground part and causes the leaves to turn yellow.

3. Lack of fertilizer and water accumulation or excessive moisture:During the growing period of potted periwinkle, insufficient fertilization, excessive watering, or poor drainage can all cause the leaf color to turn yellow. For the above reasons, timely strengthening of care can avoid yellowing leaves.

Periwinkle does not have very high requirements for soil, but it is suitable for growing in slightly acidic soil. Alkaline soil will cause poor growth of periwinkle, causing leaves to turn yellow and preventing flowering.

Treatment methods:A pH test should be conducted on the cultivation soil. If the soil is slightly alkaline, it must be treated.

Poor soil air permeability is also a factor causing periwinkle leaves to turn yellow. The soil many people use for growing flowers is quite clayey and has poor water permeability. This kind of soil may not show any problems in the short term, but over time, soil with poor water and air permeability causes poor respiration of the lower roots of periwinkle, leading to frequent yellow leaves and leaf drop.

Treatment methods:Choose sandy soil with excellent drainage performance for cultivation, and also be careful not to water too much.

Periwinkle avoids wetness and fears waterlogging. The potting soil should not be watered too much, otherwise it will affect root respiration and cause old leaves to turn yellow and new leaves to become pale yellow.

Treatment methods:Strictly control watering, and it is better to keep it dry. Pay attention to drainage during the rainy season.

Many flower enthusiasts worry that periwinkle does not have enough nutrients and will not bloom well, so occasionally they put a little fertilizer or something into the potting soil, hoping it can absorb more and bloom more. This method is correct, but the mistake lies in the frequency of fertilization. If fertilizer is applied frequently, it is very difficult for periwinkle to fully absorb it. The fertilizer remains in the soil, constantly surrounding the roots, causing the entire periwinkle plant to become listless, grow slowly, bloom less, and have smaller petals.

Treatment methods:For periwinkle, a method of alternating applications of compound fertilizer and liquid fertilizer can be adopted. At other times, do not fertilize at will. Water the next day after fertilizing to promote nutrient absorption.

Too much watering is not good for periwinkle, and too little is also not good. If watering is too little or the water does not penetrate thoroughly for a long time, the plant cannot absorb enough water. New leaves will wilt, while old leaves will turn yellow and fall off.

Treatment methods:Pay attention to watering. Water can be given after the potting soil dries out, and watering should be thorough.

What to Do When Periwinkle Leaves Turn Yellow: Causes and Solutions for Periwinkle Leaves Turning Yellow

Periwinkle is a very common flowering plant for us. What should be done when periwinkle leaves turn yellow? Below, let's explain the causes and solutions for periwinkle leaves turning yellow.

1. Soil is slightly alkaline

Periwinkle does not have very high requirements for soil, but it avoids slightly alkaline soil. Planting periwinkle in slightly alkaline soil will cause its leaves to turn yellow and prevent flowering.

Solution: Conduct a pH test on the planting soil. If the soil is slightly alkaline, it must be treated.

2. Poor soil air permeability

Poor soil air permeability is also a cause of periwinkle leaves turning yellow. The soil many people choose for planting periwinkle is highly clayey and has poor water and air permeability. This may not show any problems in the short term, but over time, soil with poor water and air permeability causes poor respiration of the lower roots of periwinkle, leading to frequent yellow leaves and leaf drop.

Solution: Choose sandy soil with good drainage performance for planting, and also be careful not to water too much.

3. Excessive watering

Periwinkle avoids wetness and fears waterlogging. The potting soil should not be watered too much, otherwise it will affect root respiration and cause old leaves to turn yellow and new leaves to become pale yellow.

Solution: Strictly control watering, and it is better to keep it dry. Pay attention to drainage during the rainy season.

4. Insufficient watering

Too much watering is not good for periwinkle, and too little is also not good. If watering is too little or the water does not penetrate thoroughly for a long time, the plant cannot absorb sufficient water. New leaves will wilt, while old leaves will turn yellow and fall off.

Solution: Pay attention to watering. Water can be given after the potting soil dries out, and watering should be thorough.

5. Excessive fertilization

Many people worry when growing flowers at home that insufficient fertilizer will lead to poor flowering, so occasionally they put a little fertilizer or something into the potting soil, hoping it can absorb more and bloom more. In fact, excessive or concentrated fertilization can burn the roots and damage the root system, causing the entire periwinkle plant to become listless, grow slowly, bloom less, and have smaller petals.

Solution: For periwinkle, a method of alternating applications of compound fertilizer and liquid fertilizer can be adopted. At other times, do not fertilize casually.

What to Do When Periwinkle Leaves Turn Yellow: Causes and Solutions for Periwinkle Leaves Withering

Periwinkle is one of China's traditional medicinal herbs, with effects of cooling the blood and lowering blood pressure, and calming and soothing the nerves. Its ornamental value is also very high, with brilliant flower colors that easily attract people's attention. Although its home cultivation method is not very difficult, some flower enthusiasts still report that the periwinkle they grow at home often has yellow leaves, affecting its appearance. When encountering this situation, one can only first analyze the cause.

What to Do When Periwinkle Leaves Turn Yellow

1. Cause: soil is slightly alkaline. Periwinkle does not have very high requirements for soil, but it is suitable for growing in slightly acidic soil. Alkaline soil will cause poor growth of periwinkle, causing leaves to turn yellow and preventing flowering.

Solution: Conduct a pH test on the planting soil. If the soil is slightly alkaline, it must be treated.

2. Cause: poor soil air permeability. Poor soil air permeability is also a cause of periwinkle leaves turning yellow. The soil many people use for growing flowers is highly clayey and has poor water permeability. This kind of soil may not show any problems in the short term, but over time, soil with poor water and air permeability causes poor respiration of the lower roots of periwinkle, leading to frequent yellow leaves and leaf drop.

Solution: Choose sandy soil with good drainage performance for planting, and also be careful not to water too much.

3. Cause: excessive watering. Periwinkle avoids wetness and fears waterlogging. The potting soil should not be watered too much, otherwise it will affect root respiration and cause old leaves to turn yellow and new leaves to become pale yellow.

Solution: Strictly control watering, and it is better to keep it dry. Pay attention to drainage during the rainy season.

4. Cause: excessive fertilization. Occasionally putting a little fertilizer or something into the potting soil, hoping it can absorb more and bloom more, is a correct approach, but the mistake lies in the frequency of fertilization. If fertilizer is applied frequently, it is very difficult for periwinkle to fully absorb it. The fertilizer remains in the soil, constantly surrounding the roots, causing the entire periwinkle plant to become listless, grow slowly, bloom less, and have smaller petals.

Solution: For periwinkle, a method of alternating applications of compound fertilizer and liquid fertilizer can be adopted. At other times, do not fertilize casually. Water the next day after fertilizing to promote nutrient absorption.

5. Cause: insufficient watering. Too much watering is not good for periwinkle, and too little is also not good. If watering is too little or the water does not penetrate thoroughly for a long time, the plant cannot absorb sufficient water. New leaves will wilt, while old leaves will turn yellow and fall off.

Solution: Pay attention to watering. Water can be given after the potting soil dries out, and watering should be thorough.

Causes and Solutions for Periwinkle Leaves Withering

1. Cause: potted transplanting. If the leaves of the periwinkle you just bought suddenly wither, what should you do? In fact, this is not your problem. It shows that this pot of flowers was just planted or just transplanted, but as long as the leaves are not extremely dried out, the periwinkle will still slowly recover.

Solution: A newly transplanted plant needs about one month of adaptation period, and then it can basically grow after about a month or so. During this period, you need to patiently care for the periwinkle. It is alive, and sometimes flowers are said to have a spirit too!

2. Cause: excessive watering. In potted periwinkle, long-term waterlogging will suffocate and rot the roots, preventing normal absorption of fertilizer and water, which will cause the leaves to wither and turn yellow.

Solution: After seeing yellow leaves, it is best not to water again. Loosen the soil in the pot, let it dry in a ventilated and dry place, and let the remaining water at the bottom evaporate as soon as possible. It is best to water only after it dries!

3. Cause: lack of water. If you see the leaves wilting, yellowing, and feeling soft, as if lacking energy, then this is due to lack of water.

Solution: You can appropriately sprinkle water on the leaves of the periwinkle, or place a basin of clean water around the flower to increase the nearby air humidity.

Is Periwinkle Toxic?

That's right, periwinkle is toxic. Periwinkle is a plant in the Apocynaceae family. Like oleander, its sap is toxic, and among its parts, the flowers are the most toxic.

Periwinkle contains more than 70 alkaloid components, including vinblastine, vincristine, and isovinblastine. Among them, vinblastine has an inhibitory effect on human white blood cells and can poison the nervous system, while isovinblastine can have a mutagenic effect inside the human body, leading to the birth of deformed fetuses.

But under normal circumstances, poisoning only occurs when a wound comes into contact with the sap or when the sap is accidentally ingested. Slightly touching the flowers and leaves of periwinkle will not harm the human body. As long as everyone is usually careful and does not casually break the branches and leaves, there is no problem. If periwinkle is accidentally ingested, it can cause symptoms such as decreased white blood cells, decreased platelets, muscle weakness, and paralysis of the limbs.

When Does Periwinkle Bloom?

1. The flowering period of periwinkle is very long. Basically, when periwinkle blooms, the flowering period starts from April to May, and generally it can last quite a long time. From spring to autumn, it blooms continuously, and it can even continue blooming throughout the year, so it is called "" (Daily Spring).

2. A single periwinkle flower does not last very long. Generally, one flower can bloom for 3-5 days.

The cultivation method of periwinkle is not very difficult, so everyone can rest assured about growing a pot at home. During the cultivation process, it is best not to repot frequently, so as not to affect the growth of the plant. In addition, because the sap of periwinkle is toxic, everyone should pay attention during care to avoid accidental ingestion causing harm.