A modular hydroponic growth system and method for roof top farming. The system includes a nutrient solution reservoir and preferably at least one plant growth module. Each module may be repositioned upon a roof top to distribute higher weight-density components over strong points or legally specified areas of the roof. A frame preferably using industry standard components is joined with the system modules to increase the stability of a resulting aggregated structure. The water reservoir may alternatively be configured to circulate water through one or more growth modules or to simply deliver water through channels to the growth modules. The frame may optionally be affixed or attached to the roof top.
