How to Save the Blackened Leaves of Epipremnum aureum
As a common indoor ornamental plant, blackened leaves of Epipremnum aureum are a frequent issue in the care process. Black spots on the leaves not only affect their ornamental value but also serve as a distress signal from the plant. This article will systematically analyze the causes of black leaves and provide actionable rescue solutions to help you restore the lush vitality of Epipremnum aureum.
In-depth Analysis of the Causes of Black Leaves in Epipremnum aureum
The Double Damage of Sudden Temperature Changes
When the ambient temperature drops below 10°C, Epipremnum aureum may develop frostbite black spots. These spots often start from the tip of the leaves and spread, accompanied by wilted and drooping leaves. It is necessary to move the plant to a warm environment of 18-25°C immediately and use a plastic bag to create a temporary greenhouse effect.
Typical Manifestation of Imbalanced Light
Black spots caused by direct sunlight appear charred, often on the sunny side of the leaves. It is recommended to use a shading net with 60% light transmission or move the plant to 1 meter away from an east-facing window. In winter, it can receive soft direct sunlight, but avoid strong midday sunlight.
Three-Step Emergency Care and Daily Maintenance
Emergency Treatment Process
1. Disinfection and Pruning: Wipe the scissors with alcohol cotton and make an oblique cut 2cm outside the edge of the black spot. 2. Wound Treatment: Apply carbendazim powder to the cut to prevent infection. 3. Environmental Adjustment: Maintain a day-night temperature difference of ≤5°C and humidity between 60-70%.
Advanced Maintenance Techniques
• Hydroponics to Soil Culture: If the roots have rotted, cut the stem segment with aerial roots and use perlite + sphagnum moss for transitional cultivation. • Nutrient Supplement: Apply a high-nitrogen ornamental plant fertilizer every month, diluted to half strength. • Disease Prevention: Regularly spray the leaves with a garlic extract solution (1:20) for natural antibacterial effects.
Long-term Prevention and Ecological Maintenance
Establish a maintenance log to record watering times and environmental parameters. Use a smart pot to monitor the substrate moisture, and water thoroughly when the moisture content is below 30%. In winter, lay a layer of ceramic stones for insulation, and in summer, use a double-layer pot structure to cool down. Through scientific maintenance, the incidence of black leaves can be reduced by over 80%.