What to Do When Ficus Lyrata Leaves Turn Yellow and Fall Off
As a popular indoor ornamental plant, the Ficus lyrata is favored for its glossy green leaves, making it an ideal choice for home greening. However, when the leaves start to turn yellow and fall off, it not only affects the plant's ornamental value but may also indicate a health issue. This article will systematically analyze the three main causes of yellowing leaves in Ficus lyrata and provide corresponding solutions to help you quickly restore the plant's vitality.
Analysis of Core Causes of Yellow Leaves in Ficus Lyrata
Light Imbalance Causes Yellow Leaves
Ficus lyrata is a semi-shady plant that requires 3-4 hours of scattered light per day. Long-term placement in a dark environment can lead to insufficient photosynthesis, causing the leaves to gradually lose their green color and turn yellow. It is important to note that more than 2 hours of direct sunlight at noon in summer can cause burn-like yellow spots on the leaf surface. It is recommended to allow full sunlight in spring and winter and use a shading net to filter 30% of the light in summer and autumn.
Improper Water Management
Root waterlogging is the primary cause of yellow leaves. When the soil moisture remains >70% for more than 3 days, the roots will start to rot. You can use the "fingertip test" to determine when to water: if the second joint of your finger is dry when inserted into the soil, it's time to water. In winter, reduce the watering amount by 50% and use warm water around 25℃ for better root absorption.
Sharp Temperature Fluctuations
The optimal growth temperature for Ficus lyrata is between 18-28°C. When the ambient temperature is <10°C for 48 consecutive hours, the leaves will show frostbite-like yellowing. In winter, maintain a day-night temperature difference of <8°C by using double-layer insulation measures: an outer layer of transparent plastic film and an inner layer of non-woven fabric, which can keep the plant warm and prevent dew formation.
Advanced Care Techniques
Using a nutrient solution with an EC value of 1.2-1.5mS/cm for foliar application monthly can enhance the leaf's resistance. Regularly rotating the pot to ensure even light exposure, combined with microbial agents to improve soil quality, can effectively prevent the recurrence of yellow leaves. When yellow leaves appear, promptly remove the diseased leaves and apply healing ointment to prevent infection.
By establishing a care triangle system of light-water-temperature, combined with regular observation and preventive maintenance, Ficus lyrata can not only recover its lush green vitality but also continuously purify the indoor air, adding natural vitality to the living space.