Temperature: Temperatures between 60 – 75°F (15 – 24°C are suitable. Avoid lower than 55°F (12°C)
Light: A brightly lit spot is needed without direct sunlight, although a small amount of daily sun is good (not mid afternoon sun).
Watering: Water when the top soil becomes slightly dry and reduce watering in the winter. The worst thing to do is to over water (not underwater) because lack of water is easily fixed, unlike the damage from over-watering.
Soil: A good draining potting soil is needed which could include part bark and prelate.
Fertilizer: The ficus lyata does not have a strong need for fertilizer like some other ficus trees have. During the spring and summer I would provide the plant with a feed of diluted liquid fertilizer once a month.
Misting and cleaning: To improve humidity mist the leaves. Also clean the leaves with a soft sponge and water to remove dust and improve the glossy appearance.
Re-Potting: When the plant is young and growing re-pot it every spring. Once it matures you’ll only need to replace the top soil each year.
Humidity: Normal room humidity is fine, but increases the humidity during the winter if artificial heating is used within the room.
Propagation: It’s advisable for the average indoor grower to not propagate these because they’re difficult, although it’s worth trying. If you try you will need to take stem tip cuttings, add rooting hormone to the cut and replant them. Once planted use bottom heat to improve your chance of success. Air layering is also a method used to propagate these, which is more successful but difficult for most indoor growers.