A novel apparatus for the treatment, e.g., cleaning, humidifying, filtration and/or detoxifying, of ambient air incorporates a plant, soil, roots and a water reservoir to allow for effective filtration of air over an extended period of time. In particular, the device is designed with an air impeller system such that external ‘dirty’ air is circulated within the device in the proximity of the plant, soil, roots and/or water reservoir, thereby removing impurities, toxins and other undesirable chemicals from the air. The apparatus and methods of the present invention are readily applicable to a number of applications where air treatment is desired, e.g., household use. Moreover, by incorporating a plant system, the apparatus serves not only a functional but an aesthetic purpose as well.