Health Benefits of Indoor Gardening Did you know that dust, dust mites, pet debris, and even cleaning products can be sources of indoor air pollution? Indoor plants can then act as natural air purifiers by absorbing these harmful substances, simultaneously releasing oxygen. Some air-purifying plants include the peace lily, Mother-in-law’s tongue, and the Swiss cheese plant! They are capable of removing pollutants such as formaldehyde, benzene, and trichloroethylene (Noah Gard