What is the reason for yellow leaves and small flowers of Vinca rosea? How to remedy the yellow leaves and small flowers of Vinca rosea?

Vinca rosea is loved by people because of its gorgeous flowers and blooming all year round. However, many people always encounter the problem of yellow leaves and small flowers of vinca rosea when growing them. So how to remedy the problem of yellow leaves and small flowers of vinca rosea? Here, I will share some maintenance tips with you, hoping to be helpful to you.

What is the reason for the yellow leaves and small flowers of Catharanthus roseus

1. It may be due to lack of sunlight: if the plant is in a dark place for a long time, it will affect its photosynthesis. The leaves cannot get nutrients and naturally turn yellow and the flowers will become small.

2. It may be due to improper watering: lack of water or excessive watering will affect the growth and size of the flowers.

3. It may be due to lack of nutrients: if no fertilizer is applied for a long time, the plant will become weak and wilt easily. You should apply proper amount of fertilizer to supplement the plant. You can apply compound fertilizer or liquid fertilizer. Pay attention to applying thin fertilizer frequently.

4. It may be that the soil is not suitable: Catharanthus roseus prefers a slightly acidic soil environment. If the soil is too alkaline, it will easily lead to poor growth and the leaves will turn yellow, affecting flowering.

How to remedy yellow leaves and small flowers of Catharanthus roseus

1. Poor soil

If the soil for growing vinca is not changed for a long time and has become hardened or silted, it will affect the ventilation of vinca and cause yellow leaves to appear easily. If you often use tap water for watering without first trapping the water, the soil will become alkaline after a long time of watering, which will affect the growth of vinca and cause yellow leaves or small flowers. The soil needs to be kept loose, breathable and fertile to make vinca grow better. You can use some soil containing humus mixed with some river sand for cultivation.

2. Improper watering

Vinca roseus is a plant that prefers high temperatures. It is drought-tolerant but not water-tolerant. When watered improperly, the leaves of vinca roseus tend to turn yellow, and in severe cases, the stems may rot or the plant may wither. When watering vinca roseus, you should water it according to the amount of moisture in the soil. When the soil is completely dry, water it thoroughly to keep the soil slightly moist.

3. Improper fertilization

Catharanthus roseus cannot grow without fertilizer. Without fertilizer, it will not grow well and cannot bloom normally. However, improper fertilization and long-term lack of fertilization will lead to poor growth. If there is excessive fertilization, it will easily cause yellow leaves. Fertilizing Catharanthus roseus needs to be fertilized according to its growth cycle. Apply enough fertilizer during the growth period and prepare to add fertilizer during the flowering period.

When does vinca bloom?

The flowering period of Vinca roseus is very long. Basically, when it blooms, the flowering period starts from April to May and can last for a long time, from spring to autumn, and even throughout the year, so it is called daily spring. However, the flowering period of a single flower of Vinca roseus does not last for a long time, and a flower can bloom for 3 to 5 days.

Related information

Vinca rosea is a poisonous plant. Its toxicity is reflected in its sap, and the flower is the most toxic. However, in general, poisoning will only occur when a wound touches the sap, or when the sap is ingested by mistake. A slight touch of the flowers and leaves of vinca rosea will not cause harm to the human body. As long as you pay attention to it and do not break the branches and leaves casually, it will be fine. If vinca rosea is ingested by mistake, it will cause symptoms such as leukopenia, thrombocytopenia, muscle weakness, and paralysis of the limbs.