Ficus elastica, the rubber fig, rubber bush, rubber tree, rubber plant, or Indian rubber bush, Indian rubber tree, is a species of plant in the fig genus, native to eastern parts of South Asia and Southeast Asia. Belonging to the fig family, Moraceae, it was used for its latex sap to make rubber before synthetics were made available. Rubber plants make excellent houseplants, as they are low-light tolerant, and help clean the indoor air from pollutants.