Abstract: An air filtration apparatus for use in horticultural applications provides, in the exemplary embodiment, a coupling portion configured for engagement about an un-filtered air source in fluid communication with an enclosed plant growing area. The coupling portion defines an opening extending therethrough. A support portion is integral about a free end of the coupling portion. A reticulated foam piece is coupled to, and configured for covering, an opposing end of the support portion. The opposing end of the support portion has a diameter relatively larger than that of the coupling portion. Thus, with the coupling portion engaged about the un-filtered air source, the apparatus is capable of removing or trapping impurities—such as dust, dirt, pollen, mold spores, insects, pests, etc.—as the un-filtered air travels into the opening of the coupling portion and through the reticulated foam piece, thereby keeping said impurities out of the associated plant growing area.

Abstract: The reticulated foam for use in horticultural applications in the present invention is used to construct a filter to keep dust, dirt, pollen, mold spores, insects, pests, etc. out of enclosed plant growing areas i.e. (greenhouses, residential and commercial plant propagation areas) and enclosed growing areas where air exchange or filtration is necessary.