What to Do When the Ficus Lyrata Leaves Turn Yellow from the Bottom
The Ficus lyrata is a common houseplant, with its glossy green leaves being a sign of health. When the bottom leaves start to turn yellow, it often indicates a problem with the care routine. This article will guide you from pathological diagnosis to systematic treatment, teaching you step by step how to resolve the yellowing leaf crisis.
Deep Analysis of Yellowing Leaves Phenomenon
Method for Checking Root Health
When the number of yellow leaves exceeds one-third of the total leaves, it is essential to immediately remove the plant from its pot and check. After removing the old soil with a bamboo skewer, observe the color of the roots: healthy roots are milky white with fine hair, while rotting roots are dark brown and slimy. Retain the main roots and cut off the necrotic fibrous roots, then let the wounds dry for 2 hours and apply a fungicide powder.
Key Steps for Soil Improvement
The original soil may contain pathogenic bacteria that can lead to recurrence. It is recommended to use a new matrix of perlite: decomposed leaf soil: vermiculite in a ratio of 3:5:2. Place a 3cm layer of ceramic stones at the bottom of the pot for drainage, and gently press the soil after potting to make the roots fit, avoiding over-compaction that affects aeration.
Optimization of Systematic Care Plan
Smart Watering System
In spring and autumn, use the 'soak pot method' to water once a week, and switch to the 'spray and thorough watering' dual mode during the high-temperature summer period. In winter, strictly follow the 'dry-wet' method, using a bamboo skewer to check the moisture of the potting soil, and water when the top 3cm is dry.
Light Control Strategy
From April to September, use a shading net to filter 60% of the sunlight, and expose the plant to 2 hours of soft direct sunlight in the morning. In winter, move the plant within 1.5 meters of a window and rotate the pot 180 degrees regularly to ensure even light exposure.
Long-term Health Management Mechanism
Apply diluted organic liquid fertilizer (1000 times) every month, and spray phosphorus potassium acid on the leaves. Maintain an environmental humidity of 60%-70%, and use a humidifier tray during the winter heating period. Regularly check the undersides of leaves to prevent red spider mites, and treat any pest infestations immediately with neem oil.
With scientific diagnosis and systematic adjustments, the Ficus lyrata usually sprouts new buds within 30-45 days. Remember, yellowing leaves are a plant's distress signal, and timely intervention can restore the greenery to its full vitality.