Reasons for Poinsettia Leaf Drop and Yellowing and How to Fix Them

Yellowing leaves and leaf drop during a plant's growth are the most distressing and worrying things for growers, but when this happens we must stay calm and composed, and then try to find out why the plant is sick, so that we can solve the problem at its root and in a targeted way.

What to Do When a Poinsettia Drops Its Leaves

1. Excessive light

In summer, a poinsettia must never be exposed to direct strong light. If the sunlight is too intense and ventilation is poor, the high temperature and dryness can easily cause the poinsettia to drop its leaves. In summer, potted poinsettias should be placed in a well-ventilated spot, with a distance of 50 cm kept between pots. The ground should be sprinkled with water often to increase air humidity.

2. Overwatering

The poinsettia fears both drought and waterlogging. If the potting soil is too wet, the poinsettia cannot carry out photosynthesis well, causing poor nutrition and leaf drop. The poinsettia should be watered appropriately, not too much. If there is heavy rain, drain the water, or move the poinsettia indoors before the rain.

3. Too little watering

The poinsettia likes moisture. If it is too dry and exposed to burning sun, it will suffer physiological water shortage, causing its leaves to curl and drop in large numbers. In spring, water the poinsettia once every 2 days; in summer, when the branches and leaves are lush and growth is fast, the amount of water should be greater, and sufficient water must be provided. 4. Temperature too low

The poinsettia likes a warm, humid and cool climate and is not cold-tolerant. The suitable growing temperature is 15-20°C. In winter, keep the nighttime temperature above 15°C, and it must not go below 5°C, otherwise the poinsettia's leaves will fall off. In winter, opening a window and letting in a single blast of cold wind can also cause the poinsettia to drop a large number of leaves. In winter, the poinsettia should be kept in a warmer and more stable environment.

4. Improper fertilizing

The poinsettia likes fertilizer and needs more nitrogen fertilizer during the growing period. If nitrogen fertilizer is insufficient, the lower leaves of the poinsettia will fall off. Besides the base fertilizer applied when potting, within one month after pinching, apply a diluted fermented cake fertilizer solution once about every 7 days, and do not apply too much.

Reasons for Poinsettia Leaves Turning Yellow and How to Fix Them

1. Potting soil too dry

When growing a poinsettia, if you water too little, or if the weather is dry and the light is intense, its leaves can easily turn yellow. Basically this is related to air humidity. In the hot summer or in autumn, the poinsettia should be placed in sufficient sunlight, but it is best to water it thoroughly and also replenish water in time, spraying water to raise air humidity.

2. Not repotting in time

When growing a poinsettia, a relatively small pot is generally chosen for the initial planting, but after growing for a period of time, the plant will gradually grow and become much larger, with dense branches and leaves. At this point the small pot can affect the poinsettia's continued growth, and the potting soil loses nutrients, which leads to yellowing leaves.

So when growing a poinsettia, you need to repot it in time according to its growth condition, and you need to loosen the soil often, so that nutrients and water can better nourish the roots and soil compaction is avoided.

3. Temperature too low

When growing a poinsettia, you need to pay attention to temperature, because the poinsettia likes a warm climate and is rather afraid of cold. When exposed to cold, the plant is easily chilled and its leaves turn yellow. When growing a poinsettia in winter, a higher temperature is needed; between 15°C——18°C is fine. It is usually warmer indoors, and you need to avoid cold drafts; if necessary, turn on the heating.

4. Too much watering

Yellow poinsettia leaves may be caused by overwatering. Overwatering leads to water accumulating in the pot. At this point, the poinsettia's roots lack oxygen and root rot may occur, all of which can cause the leaves to turn yellow. So when growing a poinsettia, you need to water it reasonably, and while ensuring sufficient water, avoid water accumulation. If you find root rot, cut off the rotten roots in time so as to prevent further infection.

5. Insufficient light

The poinsettia can be said to be a short-day plant, but during cultivation it is best to maintain suitable light. It cannot be kept away from sunlight for a long time, as this will make it lose its green color and easily turn yellow. So it is best to place the poinsettia in a spot with fairly sufficient light for care, which can promote its photosynthesis and keep the leaves emerald green.

Poinsettia Growing Habits

The poinsettia is a short-day plant and likes warmth. Its most suitable growing temperature is 18-25°C. From April to September, keep the temperature between 18-24°C; from September to April, 13-16°C; in winter it must not go below 10°C.

The poinsettia likes a humid environment and is fairly sensitive to water. As long as there is sufficient water during the growing period, the leaves are tender green and the flower color is pure.

The poinsettia likes sunlight. With sufficient sunlight during the growing period, the rapid flourishing of stems and leaves can be promoted.

Poinsettia Flower Meaning

1. Subduing demons and monsters, my heart is burning

What we usually think of as the poinsettia's flower is actually its leaves. It is not made up of petals, but rather a spread-open flower bud formed by more than 10 bracts, colored bright red. Yet it is exactly this fiery red color that gives people a festive and passionate feeling. Especially in the cold winter, this fiery red color makes people feel as warm as a stove, and their hearts cannot help but grow fervent. At Christmas, the poinsettia is the best flower to display, like clasping hands in greeting to people; such decoration symbolizes subduing demons and monsters, my heart is burning.

2. Universal celebration, jointly welcoming new life

In some weddings, the poinsettia can also be used as decoration, for universal celebration and joy. In addition, the poinsettia happens to bloom around New Year's Day and the Spring Festival, so it also carries the beautiful meaning of jointly welcoming new life.

Growing a poinsettia requires following its growing habits, so that it can grow normally and the yellowing and falling of leaves can be reduced. The poinsettia is a very positive plant; growing it can make us fearless and move forward bravely.