Cyclamen leaves naturally turn yellow and die as part of their growth cycle. Older leaves, typically at the base of the plant, will yellow and wither to make way for new growth. This is a normal process and not a cause for concern. Simply remove the yellowing leaves to encourage healthier foliage.
Cyclamen are sensitive to excessive moisture. Overwatering or planting in poorly draining soil can lead to root rot, which restricts nutrient uptake and causes leaves to yellow. Ensure the pot has drainage holes and allow the top layer of soil to dry slightly between waterings. Water from below to avoid wetting the crown, which can also trigger rot.
While overwatering is harmful, underwatering can also cause yellow leaves. Cyclamen prefer consistently moist (but not soggy) soil. If the soil dries out completely, the plant will shed leaves to conserve energy. Check soil moisture regularly and adjust watering frequency, especially during active growth periods.
Cyclamen thrive in bright, indirect light. Too much direct sunlight can scorch leaves, causing them to yellow and curl. Conversely, insufficient light weakens the plant, leading to pale or yellow foliage. Place your cyclamen near an east- or north-facing window for ideal light exposure.
Cyclamen prefer cool temperatures (50–65°F or 10–18°C). High temperatures, especially above 70°F (21°C), can trigger leaf yellowing and dormancy. Avoid placing the plant near heaters, radiators, or drafty windows. A cooler environment mimics their natural habitat and promotes healthy foliage.
Yellowing leaves may indicate a lack of essential nutrients, particularly nitrogen, iron, or magnesium. Use a balanced, water-soluble fertilizer diluted to half strength every 4–6 weeks during the growing season. Avoid over-fertilizing, as salt buildup can harm roots and exacerbate yellowing.
Infestations by spider mites, aphids, or cyclamen mites can cause leaves to yellow and distort. Fungal diseases like Fusarium wilt or bacterial soft rot may also be culprits. Inspect leaves and stems for pests or unusual spots. Treat infestations with insecticidal soap or neem oil, and remove diseased foliage promptly.
Cyclamen enter dormancy after flowering, often in summer. During this time, leaves naturally yellow and die back as the plant conserves energy. Reduce watering and store the tuber in a cool, dark place until new growth appears in autumn. This cyclical process is normal and not a sign of poor health.
Yellow leaves can result from exposure to chemicals like tap water with high fluoride or chlorine levels, or pesticide drift. Use filtered or rainwater for irrigation, and avoid placing cyclamen near areas where household cleaners or aerosols are frequently used.
