A system for growing plants, said system comprising: an elevated track circuit configured to be supported by an overhead structure, said track circuit comprising a track section including a cavity ; a plurality of trolleys configured to move within said cavity ; wherein said trolleys are configured to support plants (V) coupled thereto with said trolleys selectively moving the plants (V) along said track circuit , wherein said cavity having an inverted generally U-shaped cross sectional profile and including a pair of rolling surfaces with said pair of rolling surfaces separated by a gap , and wherein said trolleys each include a pair of wheels , with each said wheel of said trolley configured to roll along a respective one of said pair of rolling surfaces , said trolleys further including a shaft extending downwardly form said wheels and wherein said shaft of said trolleys extends through said gap with each said shaft configured to support a plant (V), wherein said system also comprises a drive system configured to move said trolleys along said track circuit ; wherein said track circuit comprises two straight track sections and two arcuate track sections , and wherein each said straight track section includes a said cavity ; and wherein said system comprises an idle end with said idle end including one of said arcuate track sections with said arcuate track section of said idle end including a groove , and wherein one said wheel of each said trolley is adapted to roll within said groove , and wherein said groove is aligned with said cavities of said straight track sections to enable said trolleys to transition between said straight track sections and said idle end . an elevated track circuit configured to be supported by an overhead structure, said track circuit comprising a track section including a cavity ; a plurality of trolleys configured to move within said cavity ; wherein said trolleys are configured to support plants (V) coupled thereto with said trolleys selectively moving the plants (V) along said track circuit , wherein said cavity having an inverted generally U-shaped cross sectional profile and including a pair of rolling surfaces with said pair of rolling surfaces separated by a gap , and wherein said trolleys each include a pair of wheels , with each said wheel of said trolley configured to roll along a respective one of said pair of rolling surfaces , said trolleys further including a shaft extending downwardly form said wheels and wherein said shaft of said trolleys extends through said gap with each said shaft configured to support a plant (V), wherein said system also comprises a drive system configured to move said trolleys along said track circuit ; wherein said track circuit comprises two straight track sections and two arcuate track sections , and wherein each said straight track section includes a said cavity ; and wherein said system comprises an idle end with said idle end including one of said arcuate track sections with said arcuate track section of said idle end including a groove , and wherein one said wheel of each said trolley is adapted to roll within said groove , and wherein said groove is aligned with said cavities of said straight track sections to enable said trolleys to transition between said straight track sections and said idle end . <EOS>