What should I do if the leaves of Pteris出现 black spots? Professional maintenance guidelines revealed!

Causes and Prevention of Black Spots on Nephrolepis LeavesCauses of Black Spots on Nephrolepis Leaves1. Disease InfectionThe most common cause of black spots on Nephrolepis leaves is disease infection, such as leaf spot disease and anthracnose, which are usually caused by fungi. When the plant's resistance decreases, the pathogen invades.2. Improper Water ManagementNephrolepis prefers a humid environment, but excessive water can lead to root hypoxia and subsequent root rot, affecting leaf health. Uneven watering can also cause localized water accumulation on leaves, forming black spots.3. Insufficient LightNephrolepis requires scattered light. If it is kept in a dark environment for a long time, the leaves will turn yellow, wilt, or even develop black spots.4. Air PollutionIndoor air pollution is also a reason for black spots on Nephrolepis leaves. Harmful substances in the air can侵入 the plant's body, affecting its normal growth.Prevention and Treatment of Black Spots on Nephrolepis Leaves1. Preventive Measures(1) Maintain a good ventilation environment to avoid air pollution.(2) Water properly to avoid root waterlogging.(3) Increase light appropriately to ensure sufficient scattered light.(4) Regularly spray fungicides to prevent disease infection.2. Treatment Methods(1) When diseases are found, promptly remove the diseased leaves to prevent the spread of the condition.(2) Spray the plant with fungicides according to the instructions.(3) Strengthen water management to keep the soil moist but not overly wet.(4) Increase light appropriately to improve the plant's growing environment.Key Points for Caring for Nephrolepis Leaves with Black Spots1. Temperature: The suitable growth temperature for Nephrolepis is 15-25°C, avoiding high and low-temperature environments.2. Humidity: Maintain air humidity at 60%-80%. Use a humidifier or spray to increase humidity.3. Soil: Choose well-draining soil with good breathability, such as decomposed leaf soil or peat soil.4. Fertilization: Apply a balanced compound fertilizer once a month to maintain plant nutrition.Although black spots on Nephrolepis leaves can be frustrating, they can be easily resolved by mastering the correct care methods. This article hopes to provide help for your care journey and bring vitality to your Nephrolepis.