Place your Ruby Rubber Tree in a room that gets a medium amount of natural light or near a window with a sheer curtain for filtered sunlight. Rotate the plant occasionally to encourage even growth.
Water when the top part of soil has dried out. Water evenly so that the soil is damp, not soggy. When watering, water the plant with fresh, lukewarm water generously and evenly from above, then tip out any excess water. When watering, avoid splashing the leaves, as this can cause stains.
Overwatering is the biggest killer of this plant, and is displayed by yellowing, dropping leaves. However, the plant's older leaves will also yellow and drop, so if you observe this happening, be sure to pay attention to which leaves are dropping, and check the moisture levels of the soil before reaching a conclusion.
Toxic to Pets: The sap of this plant may cause irritation to the skin. If ingested, may cause a harmful reaction in pets.