Pothos (Epipremnum aureum) is a hardy and popular houseplant, but its leaves may curl due to stress or improper care. From the plant's perspective, leaf curling is a survival response to environmental or physiological challenges. Understanding these causes helps address the issue effectively.
When a Pothos lacks sufficient water, its leaves curl inward to reduce surface area and minimize water loss through transpiration. The plant prioritizes conserving moisture in its roots and stems, causing the leaves to appear wilted or crispy. To fix this, water the plant thoroughly until excess drains out, ensuring the soil remains consistently moist but not soggy.
Excessive water can suffocate roots, leading to rot and impaired nutrient uptake. In response, the leaves may curl downward or yellow as the plant struggles to function. Pothos prefers well-draining soil; if overwatered, repot it in fresh soil and trim damaged roots to restore health.
Pothos thrives in humid environments. Dry air forces the leaves to curl to retain moisture. While the plant can adapt to average household humidity, increasing moisture levels with a humidifier, pebble tray, or regular misting can prevent curling.
Pothos is sensitive to extreme temperatures. Cold drafts or sudden temperature drops cause leaves to curl as a protective measure. Similarly, excessive heat accelerates transpiration, leading to curling. Keep the plant in a stable environment (65–85°F or 18–29°C) away from vents or windows.
Too much direct sunlight scorches leaves, causing them to curl and brown. Conversely, insufficient light weakens the plant, leading to pale, curled foliage. Pothos prefers bright, indirect light. Adjust its placement to avoid harsh sun or deep shade.
Insects like spider mites or aphids suck sap from leaves, stressing the plant and triggering curling. Check the undersides of leaves for pests and treat infestations with insecticidal soap or neem oil. Isolate the plant to prevent spreading.
A lack of essential nutrients (e.g., nitrogen, potassium) can cause curling leaves as the plant reallocates resources. Use a balanced, water-soluble fertilizer every 4–6 weeks during the growing season, but avoid over-fertilizing, which can harm roots.
When roots outgrow their pot, they become cramped, limiting water and nutrient absorption. The plant responds by curling leaves. Repot the Pothos into a slightly larger container with fresh soil to encourage healthy growth.
Tap water with high chlorine or fluoride content can stress Pothos, leading to curled leaf tips. Use filtered or distilled water, or let tap water sit overnight before watering to allow chemicals to dissipate.
Older leaves may curl and yellow naturally as the plant sheds them to focus energy on new growth. Remove aging leaves to maintain the plant's appearance and health.
