Houseplants do wonders for a house: they breathe new life to a room, add a bright pop of color, and purify the air.

Not all plants are equally effective, however, when it comes to filtering harmful air-borne toxins and pollutants.

NASA conducted a Clean Air Study to identify the best air-filtering indoor plants, all of which commonly found at local flower shops, to help guide us in our purchasing decisions.

NASA recommends placing at least one plant per 100 sq. feet of space. Help clean your air by buying green houseplants or a Florist’s Mum flowering plant.

Even better, Love The Garden created an info-graphic that lists 18 NASA-recommended plants for improving air quality as well as the common toxins that each plant can treat.

Top 18 houseplants for purifying the air you breathe according to NASA 2

See also: France Declares All New Rooftops Must Be Topped With Plants Or Solar Panels