What to do if the leaves of the poinsettia turn yellow and fall off
Core introduction: This article discusses how to deal with the yellowing and falling off of poinsettia leaves and related contents about mastering six methods to easily solve the problem of green plants. Let's understand this together next.
Mentioning poinsettia, it is a plant with strong ornamental value. Poinsettia potted plants can be seen in many households. During the breeding process, it is common to encounter yellowing and falling leaves or root rot. How should you try to solve this problem? Here, the editor has compiled several solutions to provide assistance, hoping to restore the vitality of the plant. In the future, similar problems can be easily solved.
【Solutions to the Yellowing and Falling off of Poinsettia Leaves】
<1. Improper Pot Size>
At the beginning of breeding poinsettia, a smaller pot is usually chosen. As it grows continuously, the pot may no longer be sufficient, causing the potting soil to lose nutrients, which leads to yellowing leaves.
<Solution>
When breeding poinsettia, you can choose a pot size according to its growth condition. If the pot is too small, you can change the pot in time. And it is necessary to loosen the soil for a period to better nourish the roots with water and nutrients, preventing soil compaction.
<2. Improper Temperature>
Poinsettia prefers to grow in warm, humid, and cool environments. When the weather is relatively cold, especially when the temperature is below 5 degrees, the plant may suffer frost damage, leading to yellowing leaves.
<Solution>
Poinsettia is not cold-resistant, so the indoor temperature should be maintained between 15-20℃, and above 15℃ after winter, and not below 5℃. In winter, the temperature should be appropriately increased to maintain a constant temperature and place the plant in a relatively stable environment for care.
<3. Improper Lighting>
If poinsettia does not receive sufficient lighting for a long time during the breeding period, it can lead to yellowing leaves. Moreover, if the sunlight is too strong in summer and there is no timely ventilation to increase air humidity, it can cause the plant to wilt, leaves to turn yellow, and leaves to fall off.
<Solution>
It is best to place the poinsettia in a place with sufficient light for maintenance, which can promote its photosynthesis and keep the leaves green. During high temperatures in summer, place it in a well-ventilated and shaded environment and spray water appropriately to maintain air humidity.
<4. Improper Watering>
What to do if the leaves of the poinsettia turn yellow and fall off
When watering the poinsettia, if excessive watering causes waterlogging in the potting soil, it can lead to yellowing leaves, and in severe cases, root rot. Additionally, long-term insufficient watering can also cause yellowing of the leaves due to lack of water supply.
<Solution>
Therefore, when watering poinsettia, it should be moderate and not excessive. During the rainy season, it is necessary to排水 the water in time and move the plant indoors. If there is insufficient watering, water should be supplemented in time. Generally, placing the poinsettia in a well-lit area for maintenance can promote its photosynthesis and keep the leaves green.
<5. Improper Fertilization>
When fertilizing poinsettia, especially during the growth period, insufficient nitrogen fertilizer can cause yellowing leaves. If excessive fertilization occurs, the potting soil is prone to fertilizer damage, which can easily cause yellowing leaves and even root rot.
<Solution>
During the growth period of poinsettia, sufficient dilute cake fertilizer water can be applied, about once a week. In winter, apply 40% fermented human waste urine. During the flowering period, do not apply too much fertilizer.
<6. Diseases and Pests>
Common pests of poinsettia include whiteflies, spider mites, and thrips, while diseases include gray mold, root rot, and leaf spot. In severe cases, the leaves turn yellow, become damaged, the rootstock rots, and there are no flowers or fruits.
<Solution>
When pests occur, if there are few pests, you can directly remove the leaves and then spray disinfectant. Spray every 3-5 days until they are completely eliminated. For diseases, you can spray with Bordeaux mixture or a 1000-fold solution of carbendazim, spraying every 5-7 days.
<Conclusion>
The above contents about what to do if the leaves of the poinsettia turn yellow and fall off, and mastering six methods to easily solve the problem, are hoped to be helpful to green plant enthusiasts!