How to Deal with Yellowing of Epipremnum aureum
Epipremnum aureum, a common indoor ornamental plant, has many plant enthusiasts troubled by the issue of yellowing leaves. This article systematically analyzes the causes of yellow leaves in different maintenance scenarios such as hydroponics and soil cultivation, and provides operable solutions to help you quickly restore the lush green state of Epipremnum aureum.
The Three Elements of Environmental Control
Precise Control of Light Intensity
The primary culprit for yellowing leaves in Epipremnum aureum is exposure to strong sunlight. It is recommended to move the plant to a scattered light area 1.5 meters away from the window, or use a 40% shade net to filter light. Morning can receive 2 hours of soft light, while strict shading is required at noon.
Temperature and Humidity Management
In winter, a constant temperature environment of 15-25°C is required for maintenance, and a humidifier should be used to maintain 60% air humidity. If the leaf edges become brown, place a water tray next to the pot to increase humidity through evaporation, avoiding direct spraying of water on the leaves to prevent black spot disease.
Water and Fertilizer Management Double Core
Scientific Watering Techniques
For soil-grown Epipremnum aureum, follow the "dry-wet" principle, water thoroughly when the top 3cm of soil is dry. For hydroponic plants, change the water every 5-7 days, using tap water that has been standing for 24 hours, with the water level covering 2/3 of the roots, adding 2 drops of special nutrient solution when changing the water.
Regulations for Fertilizer Application
Apply a balanced liquid fertilizer with nitrogen, phosphorus, and potassium (concentration ≤ 800 times) every month during the growing season, and stop fertilizing in winter. If yellow leaves caused by fertilizer damage appear, immediately change the soil and trim the roots: cut off the blackened roots and soak them in carbendazim for 20 minutes before repotting.
Key Points of Root Maintenance
Substrate Selection Standards
For soil cultivation, it is recommended to use a mixed substrate of peat soil: perlite: vermiculite = 5:3:2, retaining 1/3 of the protective soil when repotting every 2 years. Hydroponic containers need to be cleaned and disinfected every half month to prevent the growth of green algae that consumes oxygen.
Disease Prevention Strategies
Regularly inspect the junction of the root and stem, immediately cut off the diseased part if brown rot disease is found, and drench the roots with a 1000 times solution of carbendazim. For hydroponic plants, add charcoal blocks to purify the water, effectively preventing root rot disease.
By adjusting light, precise water and fertilizer management, and three-dimensional root care solutions, combined with real-time monitoring of temperature and humidity data using environmental monitoring equipment, the yellowing leaf problem of Epipremnum aureum can be systematically solved. It is recommended to take growth comparison photos monthly, establish a maintenance log, and gradually master the growth patterns of the plant.