• Indoor plants generally thrive in groups and potted in well-drained soil.blumenschale - plants image by Bettina Pressl from Fotolia.com
  
  Clear the carbon dioxide from inside your home by adding inexpensive houseplants rather than spending money on costly filtration equipment. All plants process carbon dioxide into oxygen through photosynthesis, but some indoor plants are better equipped filters. Plants that have larger leaves, such as the rubber plant, are able to filter more air than smaller plants, like English ivy.
  
  

Snake Plant

• The snake plant, or mother-in-law's tongue, is a low-maintenance houseplant known for filtering the air of carbon dioxide, as well as formaldehyde and nitrogen oxides. Thick leaves resembling swords shoot straight up in clusters. Green leaves are variegated with pale yellow and light green veins. This plant grows from the bottom up and reproduces smaller shoots out of the dirt. Pot-bound is best for the root system. Let the soil dry completely before watering; overwatering is the greatest threat to the snake plant. Keep in filtered or indirect sunlight and out of reach of children and pets, because all parts of this plant are poisonous if digested.
  
  

English Ivy

• English ivy is a consistent air purifier, not only with exchanging carbon dioxide for oxygen, but also removing airborne molds and animal feces. According to Web MD, English ivy filters out almost all airborne animal feces and molds within six hours as reported in a research study presented to the American College of Allergy, Asthma and Immunology. English ivy consists of small leaves growing on a woody vine. Better suited for bathrooms and kitchens where the air is often steamy, English ivy thrives in high humidity environments and requires lots of moisture. A potted English ivy plant is suitable for hanging, or the tendrils can be staked and trained to climb.
  
  

Rubber Plant

• The rubber plant, an evergreen, ranks 4th in the NASA study of all indoor plants that are air purifiers, with a total score of 8 out of 10 points. This ficus cleans the air by using its plastic-appearing large leaves as a filtration system. Keep the rubber plant from growing too tall and lanky by topping it, or cutting it off from the top, and pruning the sides on a regular basis. Rubber plants like to stay in one place and can be finicky if the environment changes drastically. Keep the plant moist with regular waterings and use a damp cloth to keep the leathery leaves free from dust.