Abstract: A living wall system or method involving a plurality of living wall modules. Each living wall module has a module body enclosing a module plenum, the module body having a growth media port and at least one duct port in fluid communication with the growth media port via the module plenum. The plurality of module plenums are interconnected through the plurality of duct ports to form a recirculation plenum. At least one directional blower is received within the recirculation plenum, the at least one directional blower between at least one upstream living wall module and at least one downstream living wall module to direct fluid flow from the at least one upstream living wall module to the at least one downstream living wall module.