Abstract: A plant cultivation system that includes a plurality of mobile racks and a plurality of lighting assemblies that are movable relative to each other. The mobile racks are designed to be independently movable along a floor surface and each support a plurality of planting units designed to receive the plants. The lighting assemblies are positioned adjacent to the mobile racks and are supported along an overhead lighting track independent from the mobile racks. Each of the lighting assemblies is movable along a rail of the overhead lighting track to adjust the position of the lighting assemblies relative to the mobile racks. The lighting assemblies are designed such that the mobile racks contact the lighting assemblies to move the lighting assemblies along the lighting track. Each lighting assembly includes one or more lighting fixtures that are operable to provide the required light for growing plants supported on the mobile rack.