Why Do Poinsettia Leaves Turn Yellow?
Poinsettia plants are known for their vibrant red, white, or pink bracts, often mistaken for flowers. However, when these bracts start to turn yellow, it can be a sign of various issues affecting the plant's health.
Causes of Yellowing Poinsettia Leaves:
- Overwatering: Excessive watering can lead to root rot, which can disrupt water and nutrient absorption. Yellowing leaves from the bottom upwards are a common symptom.
- Underwatering: Infrequent watering can cause the plant to become dehydrated, leading to dry, curled, and yellowing leaves.
- Insufficient Sunlight: Poinsettias require bright, indirect light. Prolonged exposure to low light can result in pale or yellowing leaves.
- Nutrient Deficiency: Lack of essential nutrients, such as nitrogen or iron, can cause yellowing between leaf veins.
- Disease: Fungal or bacterial diseases can cause foliage to turn yellow and eventually fall off.
How to Prevent Yellowing:
- Water regularly, allowing the soil to dry out slightly between waterings.
- Provide adequate sunlight, but avoid direct sunlight during hot afternoons.
- Fertilize the plant every 2-4 weeks during the growing season.
- Check for pests or diseases and treat accordingly.
FAQs:
- Is it normal for poinsettias to lose some leaves? Yes, a few lower leaves yellowing and dropping is natural. Excessive leaf loss may indicate a problem.
- Can I save a poinsettia with yellow leaves? Yes, if the yellowing is caught early and the underlying cause is addressed promptly.
- How long do poinsettias live? Poinsettias are typically grown as annuals, but can be maintained as houseplants for several years with proper care.
- What temperature do poinsettias prefer? Poinsettias prefer temperatures between 60-75°F (15-24°C) during the day and 50-60°F (10-15°C) at night.
- Can poinsettias be toxic to pets? Ingestion of poinsettia leaves can cause minor stomach upset in pets, but they are not highly toxic.
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