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15 houseplants for improving indoor air quality

Red-edged dracaena (Dracaena marginata)

Photo: EzLost/Flickr

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Red-edged dracaena (Dracaena marginata)

The red edges of this easy dracaena bring a pop of color, and the shrub can grow to reach your ceiling. This plant is best for removing xylene, trichloroethylene and formaldehyde, which can be introduced to indoor air through lacquers, varnishes and gasoline.