Light and Soil
Plant the ficus in a well-draining potting mix. Purchase a loamy soil with added vermiculite or perlite for drainage, or mix your own. Use 3 parts loam 1 part peat and 1 part sand for a well-draining mixture. Plant in a deep pot with drainage holes so the water can run out. Place the ficus near a window in a room that gets bright light in the summer with more moderate light in the winter. Turn the plant occasionally so all the growth does not occur on one side.
Water weekly during the summer with room-temperature water. Add water until it drains from the bottom of the pot. Discard the excess water if it flows into a container. Adjust the watering for your particular plant. Allow the soil to dry slightly between waterings. If the leaves turn yellow and begin to drop, you may need to increase or decrease the amount of water. Check the root ball. If the roots are soggy water the plant less often. If they are dry, increase watering. Humidity and light levels affect the amount of water needed.