Answer: Overwatering is the number one cause of yellowing leaves so be careful with watering. Always feel the surface of the soil with your finger tip. If it feels dry to the touch one inch below the surface, it is time to water. If the soil still feels moist, withhold water for a day or two. Select a site with bright, filtered light. To determine if the light is bright enough for a ficus, you should be able to see your shadow on the wall behind the area you select. Early-morning or late-afternoon sun is fine, but avoid an area that gets direct sun all day.
Ficus likes high humidity. Make a humidity tray by filling the plant saucer with gravel. Runoff water will collect in the saucer, which has two benefits: the roots will not sit in standing water - the most common cause of root rot; and the surplus water will evaporate through the plant, providing additional humidity.
Hope this information helps!
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