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Houseplants and Air-Quality Claims: What a Pot Can Do

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Choose houseplants for their growing needs and appearance. Do not treat a list of potted plants as a replacement for managing indoor ventilation.

A plant is not an air purifier

A few potted plants should not be presented as equipment that removes a room's smoke or other pollutants. Results from enclosed experimental systems do not establish that an ordinary household pot provides the same practical air-cleaning effect.

Choose plants for the growing space

Compare available light, temperature and room for mature leaves. A large-leaved plant still needs suitable root conditions. Keep the nursery label and use care guidance for the particular plant rather than a ranking based on claimed pollutant removal.

Keep care practical

Check the mix before watering and remove excess drainage water. Clean suitable smooth leaves gently when dusty. Household ventilation and pollutant-source management are separate tasks from maintaining a plant display.

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Related reading: Houseplants for Lower Light: Choosing a Real Position.

Horticultural reference

Iowa State Extension: Houseplants and indoor air quality