Embodiments are described for a closed-loop, vertical garden system for growing plants and filtering air and water comprising: a support structure； a composite, grow media configured to physically support the growth of plants and distribute water to the roots of the plants through capillary action through the area of the grow media； a water source coupled to the grow media through a pump and plumbing system, wherein the plumbing system is configured to draw water from the water source through the grow media and back to the water source in substantially closed loop aquatic system； and an air flow subsystem configured to draw outside air through the plants and transmit filtered air back out of the support structure.
